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  • Windows Form hangs when running threads

    - by Benjamin Ortuzar
    JI have written a .NET C# Windows Form app in Visual Studio 2008 that uses a Semaphore to run multiple jobs as threads when the Start button is pressed. It’s experiencing an issue where the Form goes into a comma after being run for 40 minutes or more. The log files indicate that the current jobs complete, it picks a new job from the list, and there it hangs. I have noticed that the Windows Form becomes unresponsive when this happens. The form is running in its own thread. This is a sample of the code I am using: protected void ProcessJobsWithStatus (Status status) { int maxJobThreads = Convert.ToInt32(ConfigurationManager.AppSettings["MaxJobThreads"]); Semaphore semaphore = new Semaphore(maxJobThreads, maxJobThreads); // Available=3; Capacity=3 int threadTimeOut = Convert.ToInt32(ConfigurationManager.AppSettings["ThreadSemaphoreWait"]);//in Seconds //gets a list of jobs from a DB Query. List<Job> jobList = jobQueue.GetJobsWithStatus(status); //we need to create a list of threads to check if they all have stopped. List<Thread> threadList = new List<Thread>(); if (jobList.Count > 0) { foreach (Job job in jobList) { logger.DebugFormat("Waiting green light for JobId: [{0}]", job.JobId.ToString()); if (!semaphore.WaitOne(threadTimeOut * 1000)) { logger.ErrorFormat("Semaphore Timeout. A thread did NOT complete in time[{0} seconds]. JobId: [{1}] will start", threadTimeOut, job.JobId.ToString()); } logger.DebugFormat("Acquired green light for JobId: [{0}]", job.JobId.ToString()); // Only N threads can get here at once job.semaphore = semaphore; ThreadStart threadStart = new ThreadStart(job.Process); Thread thread = new Thread(threadStart); thread.Name = job.JobId.ToString(); threadList.Add(thread); thread.Start(); } logger.Info("Waiting for all threads to complete"); //check that all threads have completed. foreach (Thread thread in threadList) { logger.DebugFormat("About to join thread(jobId): {0}", thread.Name); if (!thread.Join(threadTimeOut * 1000)) { logger.ErrorFormat("Thread did NOT complete in time[{0} seconds]. JobId: [{1}]", threadTimeOut, thread.Name); } else { logger.DebugFormat("Thread did complete in time. JobId: [{0}]", thread.Name); } } } logger.InfoFormat("Finished Processing Jobs in Queue with status [{0}]...", status); } //form methods private void button1_Click(object sender, EventArgs e) { buttonStop.Enabled = true; buttonStart.Enabled = false; ThreadStart threadStart = new ThreadStart(DoWork); workerThread = new Thread(threadStart); serviceStarted = true; workerThread.Start(); } private void DoWork() { EmailAlert emailAlert = new EmailAlert (); // start an endless loop; loop will abort only when "serviceStarted" flag = false while (serviceStarted) { emailAlert.ProcessJobsWithStatus(0); // yield if (serviceStarted) { Thread.Sleep(new TimeSpan(0, 0, 1)); } } // time to end the thread Thread.CurrentThread.Abort(); } //job.process() public void Process() { try { //sets the status, DateTimeStarted, and the processId this.UpdateStatus(Status.InProgress); //do something logger.Debug("Updating Status to [Completed]"); //hits, status,DateFinished this.UpdateStatus(Status.Completed); } catch (Exception e) { logger.Error("Exception: " + e.Message); this.UpdateStatus(Status.Error); } finally { logger.Debug("Relasing semaphore"); semaphore.Release(); } I have tried to log what I can into a file to detect where the problem is happening, but so far I haven't been able to identify where this happens. Losing control of the Windows Form makes me think that this has nothing to do with processing the jobs. Any ideas?

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  • Insane SmartGWT + GWT situation... Error on instantiating ListGridRecord?

    - by Xandel
    Hi all, I am asking this here in the hope that someone has maybe come across this situation too... I have posted this on the SmartGWT forum: I am having an issue when trying to instantiate a ListGridRecord object on my server side. I am using the ListGrid on the client side, I want to use GWT's RPC to pass back an array of ListGridRecord objects to populate the grid with. I know that SmartGWT is designed to link to a datasource but I want full control over when I populate the grid and this shouldn't be as much of a nightmare as it is to do. I have searched high and low and cannot find anyone complaining about the same thing. The exception however (listed below) has come up (in my search findings) as a possible memory error - where increasing the memory (-Xmx512m argument) has apparently solved the problem. It did not, however, sort out mine. If anyone can shed any light on this I would greatly appreciate it! Here are my details: Developing using Eclipse Galileo on Ubuntu 9.04 (Jaunty) and GWT 2.0.3, I built the initial GWT project using the webAppCreator bundled with the GWT 2.0.3 release and imported the project into Eclipse as described on the GWT Getting Started Page (as using the GWT Eclipse plugin caused even more nightmares when trying to connect to a database - this is apparently due to using the Google App Engine and turning it off as all the posts suggested only causes ClassNotFound exceptions). The line that causes the error is literally: ListGridRecord a = new ListGridRecord(); The error I get is the following: 00:00:25.916 [WARN] Exception while dispatching incoming RPC call com.google.gwt.user.server.rpc.UnexpectedException : Service method 'public abstract java.lang.String za.co.company.product.client.service.EmployeeServi ce.getAllEmployeeAsListGridRecord()' threw an unexpected exception: java.lang.UnsatisfiedLinkError: com.smartgwt.client.util.LogUtil.setJSNIErrorHandl er()V at com.google.gwt.user.server.rpc.RPC.encodeResponseF orFailure(RPC.java:378) at com.google.gwt.user.server.rpc.RPC.invokeAndEncode Response(RPC.java:581) at com.google.gwt.user.server.rpc.RemoteServiceServle t.processCall(RemoteServiceServlet.java:188) at com.google.gwt.user.server.rpc.RemoteServiceServle t.processPost(RemoteServiceServlet.java:224) at com.google.gwt.user.server.rpc.AbstractRemoteServi ceServlet.doPost(AbstractRemoteServiceServlet.java :62) at javax.servlet.http.HttpServlet.service(HttpServlet .java:637) at javax.servlet.http.HttpServlet.service(HttpServlet .java:717) at org.mortbay.jetty.servlet.ServletHolder.handle(Ser vletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler.handle(Se rvletHandler.java:362) at org.mortbay.jetty.security.SecurityHandler.handle( SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(Se ssionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(Co ntextHandler.java:729) at org.mortbay.jetty.webapp.WebAppContext.handle(WebA ppContext.java:405) at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152) at org.mortbay.jetty.handler.RequestLogHandler.handle (RequestLogHandler.java:49) at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:324) at org.mortbay.jetty.HttpConnection.handleRequest(Htt pConnection.java:505) at org.mortbay.jetty.HttpConnection$RequestHandler.co ntent(HttpConnection.java:843) at org.mortbay.jetty.HttpParser.parseNext(HttpParser. java:647) at org.mortbay.jetty.HttpParser.parseAvailable(HttpPa rser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnec tion.java:380) at org.mortbay.io.nio.SelectChannelEndPoint.run(Selec tChannelEndPoint.java:395) at org.mortbay.thread.QueuedThreadPool$PoolThread.run (QueuedThreadPool.java:488) Caused by: java.lang.UnsatisfiedLinkError: com.smartgwt.client.util.LogUtil.setJSNIErrorHandl er()V at com.smartgwt.client.util.LogUtil.setJSNIErrorHandl er(Native Method) at com.smartgwt.client.core.JsObject.(JsObjec t.java:30) at za.co.company.product.server.service.EmployeeServi ceImpl.getAllEmployeeAsListGridRecord(EmployeeServ iceImpl.java:83) at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.google.gwt.user.server.rpc.RPC.invokeAndEncode Response(RPC.java:562) at com.google.gwt.user.server.rpc.RemoteServiceServle t.processCall(RemoteServiceServlet.java:188) at com.google.gwt.user.server.rpc.RemoteServiceServle t.processPost(RemoteServiceServlet.java:224) at com.google.gwt.user.server.rpc.AbstractRemoteServi ceServlet.doPost(AbstractRemoteServiceServlet.java :62) at javax.servlet.http.HttpServlet.service(HttpServlet .java:637) at javax.servlet.http.HttpServlet.service(HttpServlet .java:717) at org.mortbay.jetty.servlet.ServletHolder.handle(Ser vletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler.handle(Se rvletHandler.java:362) at org.mortbay.jetty.security.SecurityHandler.handle( SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(Se ssionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(Co ntextHandler.java:729) at org.mortbay.jetty.webapp.WebAppContext.handle(WebA ppContext.java:405) at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152) at org.mortbay.jetty.handler.RequestLogHandler.handle (RequestLogHandler.java:49) at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:324) at org.mortbay.jetty.HttpConnection.handleRequest(Htt pConnection.java:505) at org.mortbay.jetty.HttpConnection$RequestHandler.co ntent(HttpConnection.java:843) at org.mortbay.jetty.HttpParser.parseNext(HttpParser. java:647) at org.mortbay.jetty.HttpParser.parseAvailable(HttpPa rser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnec tion.java:380) at org.mortbay.io.nio.SelectChannelEndPoint.run(Selec tChannelEndPoint.java:395) at org.mortbay.thread.QueuedThreadPool$PoolThread.run (QueuedThreadPool.java:488) Thanks in advance! Xandel

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  • ASP.NET MVC 3 embrace dynamic type - CSDN.NET - CSDN Software Development Channel

    - by user559071
    About a decade ago, Microsoft will all bet on the WebForms and static types. With the complete package from scattered to the continuous development, and now almost every page can be viewed as its own procedure. Subsequent years, the industry continued to move in another direction, love is better than separation package, better than the late binding early binding to the idea. This leads to two very interesting questions. The first is the problem of terminology. Consider the original Smalltalk MVC model, view and controller is not only tightly coupled together, and usually in pairs. Most of the framework is that Microsoft, including the classic VB, WinForms, WebForms, WPF and Silverlight, they both use the code behind file to store the controller logic. But said "MVC" usually refers to the view and controller are loosely coupled framework. This is especially true for the Web framework, HTML form submission mechanism allows any views submitted to any of the controller. Since this article was mainly talking about Web technologies, so we need to use the modern definition. The second question is "If you're Microsoft, how to change orbit without causing too much pressure to the developer?" So far, the answer is: new releases each year, until the developers meet up. ASP.NET MVC's first product was released last March. Released in March this year, ASP.NET MVC 2.0. 3.0 RC 2 is currently in phase, expected to be released next March. December 10, Microsoft released ASP.NET MVC 3.0 Release Candidate 2. RC 2 is built on top of Microsoft's commitment to the jQuery: The default project template into jQuery 1.4.4, jQuery Validation 1.7 and jQuery UI. Although people think that Microsoft will focus shifted away from server-side controls to be a joke, but the introduction of Microsoft's jQuery UI is that this is the real thing. For those worried about the scalability of the developers, there are many excellent control can replace the session state. With SessionState property, you can tell the controller session state is read-only, read-write, or can be completely ignored in the. This site is no single server, but if a server needs to access another server session state, then this approach can provide a great help. MVC 3 contains Razor view engine. By default, the engine will be encoded HTML output, so that we can easily output on the screen the text of the original. HTML injection attacks even without the risk of encoded text can not easily prevent the page rendering. For many C # developers in the end do what is most shocking that MVC 3 for the controller and view and embrace the dynamic type. ViewBag property will open a dynamic object, developers can run on top of the object to add attributes. In general, it is used to send the view from the controller non-mode data. Scott Guthrie provides state of the sample contains text (such as the current time) and used to assemble the list box entries. Asked Link: http://www.infoq.com/cn/news/2010/12/ASPNET-MVC-3-RC-2; jsessionid = 3561C3B7957F1FB97848950809AD9483

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  • PHP mini-server download resulme-error! Resource id # 4

    - by snikolov
    <?php $httpsock = @socket_create_listen("9090"); if (!$httpsock) { print "Socket creation failed!\n"; exit; } while (1) { $client = socket_accept($httpsock); $input = trim(socket_read ($client, 4096)); $input = explode(" ", $input); $range = $input[12]; $input = $input[1]; $fileinfo = pathinfo($input); switch ($fileinfo['extension']) { default: $mime = "text/html"; } if ($input == "/") { $input = "index.html"; } $input = ".$input"; if (file_exists($input) && is_readable($input)) { echo "Serving $input\n"; $contents = file_get_contents($input); $output = "HTTP/1.0 200 OK\r\nServer: APatchyServer\r\nConnection: close\r\nContent-Type: $mime\r\n\r\n$contents"; } else { //$contents = "The file you requested doesn't exist. Sorry!"; //$output = "HTTP/1.0 404 OBJECT NOT FOUND\r\nServer: BabyHTTP\r\nConnection: close\r\nContent-Type: text/html\r\n\r\n$contents"; if(isset($range)) { list($a, $range) = explode("=",$range); str_replace($range, "-", $range); $size2 = $size-1; $new_length = $size-$range; $output = "HTTP/1.1 206 Partial Content\r\n"; $output .= "Content-Length: $new_length\r\n"; $output .= "Content-Range: bytes $range$size2/$size\r\n"; } else { $size2=$size-1; $output .= "Content-Length: $new_length\r\n"; } $chunksize = 1*(1024*1024); $bytes_send = 0; $file = "a.mp3"; $filesize = filesize($file); if ($file = fopen($file, 'r')) { if(isset($range)) $output = 'HTTP/1.0 200 OK\r\n'; $output .= "Content-type: application/octet-stream\r\n"; $output .= "Content-Length: $filesize\r\n"; $output .= 'Content-Disposition: attachment; filename="'.$file.'"\r\n'; $output .= "Accept-Ranges: bytes\r\n"; $output .= "Cache-Control: private\n\n"; fseek($file, $range); $download_rate = 1000; while(!feof($file) and (connection_status()==0)) { $var_stat = fread($file, round($download_rate *1024)); $output .= $var_stat;//echo($buffer); // is also possible flush(); sleep(1);//// decrease download speed } fclose($file); } /** $filename = "dada"; $file = fopen($filename, 'r'); $filesize = filesize($filename); $buffer = fread($file, $filesize); $send = array("Output"=>$buffer,"filesize"=>$filesize,"filename"=>$filename); $file = $send['filename']; */ //@ob_end_clean(); // $output .= "Content-Transfer-Encoding: binary"; //$output .= "Connection: Keep-Alive\r\n"; } socket_write($client, $output); socket_close ($client); } socket_close ($httpsock); Hey guys, I haved create a miniwebserver downloader. It can download files from your server. However, I am unable to resume my download when I download the file – I get Resource id # 4 – and I also can't resume the download. I would like to know how I can monitor and record the client output and how much bandwidth he has downloaded. Perl has something like this, but it's hardcore; if possible, kindly provide me with some pointers thank you :)

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  • using getScript to import plugin on page using multiple versions of jQuery

    - by mikez302
    I am developing an app on a page that uses jQuery 1.2.6, but I would like to use jQuery 1.4.2 for my app. I really don't like to use multiple versions of jQuery like this but the copy on the page (1.2.6) is something I have no control over. I decided to isolate my code like this: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html><head> <script type="text/javascript" src="jquery-1.2.6.min.js> <script type="text/javascript" src="pageStuff.js"> </head> <body> Welcome to our page. <div id="app"> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.js"></script> <script type="text/javascript" src="myStuff.js"> </div> </body></html> The file myStuff.js has my own code that is supposed to use jQuery 1.4.2, and it looks like this: (function($) { //wrap everything in function to add ability to use $ var with noConflict var jQuery = $; //my code })(jQuery.noConflict(true)); This is an extremely simplified version, but I hope you get the idea of what I did. For a while, everything worked fine. However, I decided to want to use a jQuery plugin in a separate file. I tested it and it acted funny. After some experimentation, I found out that the plugin was using the old version of jQuery, when I wanted it to use the new version. Does anyone know how to import and run a js file from the context within the function wrapping the code in myStuff.js? In case this matters to anyone, here is how I know the plugin is using the old version, and what I did to try to solve the problem: I made a file called test.js, consisting of this line: alert($.fn.jquery); I tried referencing the file in a script tag the way external Javascript is usually included, below myStuff.js, and it came up as 1.2.6, like I expected. I then got rid of that script tag and put this line in myStuff.js: $.getScript("test.js"); and it still came back as 1.2.6. That wasn't a big surprise -- according to jQuery's documentation, scripts included that way are executed in the global context. I then tried doing this instead: var testFn = $.proxy($.getScript, this); testFn("test.js"); and it still came back as 1.2.6. After some tinkering, I found out that the "this" keyword referred to the window, which I assume means the global context. I am looking for something to put in place of "this" to refer to the context of the enclosing function, or some other way to make the code in the file run from the enclosing function. I noticed that if I copy and paste the code, it works fine, but it is a big plugin that is used in many places, and I would prefer not to clutter up my file with their code. I am out of ideas. Does anyone else know how to do this?

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  • When to draw/layout child controls in UserControl

    - by Ted Elliott
    I have a list-type UserControl (like a ListBox). The items inside the control are another complex UserControl containing a few other controls (ComboBox, TextBox, etc). I'm wondering what the preferred or best method would be to override to draw/layout the child controls. I basically want to trigger this method any time the list changes. I originally had a RedrawItems method that I just called whenever I needed to redraw which added or removed Controls from the Controls collection. But it was getting triggered too early in the lifecycle of the code from some of the designer code. Now I've switched to overriding OnLayout and doing my stuff there. I call PerformLayout when I want to trigger a redraw, such as when the DataSource property changes or when it fires a changed event. Is OnLayout the best place for this? Here is the code: [ComplexBindingProperties("DataSource")] public partial class CustomList : UserControl { private object _dataSource; private CustomListItem _newRow; public CustomList() { InitializeComponent(); } protected override void OnCreateControl() { base.OnCreateControl(); _newRow = new CustomListItem(); Controls.Add(_newRow); } public object DataSource { get { return _dataSource; } set { bool register = _dataSource != value; if (_dataSource != null && _dataSource != value) { UnregisterDataSource(_dataSource); } _dataSource = value; if (_dataSource != null) RegisterDataSource(_dataSource); PerformLayout(); } } public CustomListItem ItemTemplate { get { return _newRow; } } protected override void OnLayout(LayoutEventArgs e) { base.OnLayout(e); int ctrlCount = this.Controls.AsEnumerable().OfType<CustomListItem>().Count(); ctrlCount--; // subtract 1 for the add row var ds = this.DataSource as System.Collections.IList; int itemCount = ds == null? 0 : ds.Count; int maxCount = Math.Max(ctrlCount,itemCount); if (maxCount == 0) return; this.SuspendLayout(); // temporarily remove the template Controls.RemoveAt(Controls.Count-1); for (int i = 0; i < maxCount; i++) { CustomListItem item; if (i >= itemCount) { Controls.RemoveAt(i); } else { if (i >= ctrlCount) { item = ItemTemplate.Copy(); this.Controls.Add(item); item.Location = new Point(0, item.Height * i); item.TabIndex = i + 1; item.ViewMode = true; } else { item = (CustomListItem) Controls[i]; } item.Data = ds[i]; } } this.Controls.Add(ItemTemplate); ItemTemplate.Location = new Point(0, ItemTemplate.Height * maxCount); ItemTemplate.TabIndex = maxCount + 1; this.ResumeLayout(true); } private void RegisterDataSource(object dataSource) { IBindingList ds = dataSource as IBindingList; if (ds != null) { ds.ListChanged += new ListChangedEventHandler(DataSource_ListChanged); } } void DataSource_ListChanged(object sender, ListChangedEventArgs e) { switch (e.ListChangedType) { case ListChangedType.ItemAdded: PerformLayout(); break; case ListChangedType.ItemChanged: break; case ListChangedType.ItemDeleted: PerformLayout(); break; case ListChangedType.ItemMoved: PerformLayout(); break; case ListChangedType.Reset: PerformLayout(); break; default: break; } } private void UnregisterDataSource(object dataSource) { IBindingList ds = dataSource as IBindingList; if (ds != null) { ds.ListChanged -= new ListChangedEventHandler(DataSource_ListChanged); } } }

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  • Matrix Multiplication with Threads: Why is it not faster?

    - by prelic
    Hey all, So I've been playing around with pthreads, specifically trying to calculate the product of two matrices. My code is extremely messy because it was just supposed to be a quick little fun project for myself, but the thread theory I used was very similar to: #include <pthread.h> #include <stdio.h> #include <stdlib.h> #define M 3 #define K 2 #define N 3 #define NUM_THREADS 10 int A [M][K] = { {1,4}, {2,5}, {3,6} }; int B [K][N] = { {8,7,6}, {5,4,3} }; int C [M][N]; struct v { int i; /* row */ int j; /* column */ }; void *runner(void *param); /* the thread */ int main(int argc, char *argv[]) { int i,j, count = 0; for(i = 0; i < M; i++) { for(j = 0; j < N; j++) { //Assign a row and column for each thread struct v *data = (struct v *) malloc(sizeof(struct v)); data->i = i; data->j = j; /* Now create the thread passing it data as a parameter */ pthread_t tid; //Thread ID pthread_attr_t attr; //Set of thread attributes //Get the default attributes pthread_attr_init(&attr); //Create the thread pthread_create(&tid,&attr,runner,data); //Make sure the parent waits for all thread to complete pthread_join(tid, NULL); count++; } } //Print out the resulting matrix for(i = 0; i < M; i++) { for(j = 0; j < N; j++) { printf("%d ", C[i][j]); } printf("\n"); } } //The thread will begin control in this function void *runner(void *param) { struct v *data = param; // the structure that holds our data int n, sum = 0; //the counter and sum //Row multiplied by column for(n = 0; n< K; n++){ sum += A[data->i][n] * B[n][data->j]; } //assign the sum to its coordinate C[data->i][data->j] = sum; //Exit the thread pthread_exit(0); } source: http://macboypro.com/blog/2009/06/29/matrix-multiplication-in-c-using-pthreads-on-linux/ For the non-threaded version, I used the same setup (3 2-d matrices, dynamically allocated structs to hold r/c), and added a timer. First trials indicated that the non-threaded version was faster. My first thought was that the dimensions were too small to notice a difference, and it was taking longer to create the threads. So I upped the dimensions to about 50x50, randomly filled, and ran it, and I'm still not seeing any performance upgrade with the threaded version. What am I missing here?

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  • Parallel processing via multithreading in Java

    - by Robz
    There are certain algorithms whose running time can decrease significantly when one divides up a task and gets each part done in parallel. One of these algorithms is merge sort, where a list is divided into infinitesimally smaller parts and then recombined in a sorted order. I decided to do an experiment to test whether or not I could I increase the speed of this sort by using multiple threads. I am running the following functions in Java on a Quad-Core Dell with Windows Vista. One function (the control case) is simply recursive: // x is an array of N elements in random order public int[] mergeSort(int[] x) { if (x.length == 1) return x; // Dividing the array in half int[] a = new int[x.length/2]; int[] b = new int[x.length/2+((x.length%2 == 1)?1:0)]; for(int i = 0; i < x.length/2; i++) a[i] = x[i]; for(int i = 0; i < x.length/2+((x.length%2 == 1)?1:0); i++) b[i] = x[i+x.length/2]; // Sending them off to continue being divided mergeSort(a); mergeSort(b); // Recombining the two arrays int ia = 0, ib = 0, i = 0; while(ia != a.length || ib != b.length) { if (ia == a.length) { x[i] = b[ib]; ib++; } else if (ib == b.length) { x[i] = a[ia]; ia++; } else if (a[ia] < b[ib]) { x[i] = a[ia]; ia++; } else { x[i] = b[ib]; ib++; } i++; } return x; } The other is in the 'run' function of a class that extends thread, and recursively creates two new threads each time it is called: public class Merger extends Thread { int[] x; boolean finished; public Merger(int[] x) { this.x = x; } public void run() { if (x.length == 1) { finished = true; return; } // Divide the array in half int[] a = new int[x.length/2]; int[] b = new int[x.length/2+((x.length%2 == 1)?1:0)]; for(int i = 0; i < x.length/2; i++) a[i] = x[i]; for(int i = 0; i < x.length/2+((x.length%2 == 1)?1:0); i++) b[i] = x[i+x.length/2]; // Begin two threads to continue to divide the array Merger ma = new Merger(a); ma.run(); Merger mb = new Merger(b); mb.run(); // Wait for the two other threads to finish while(!ma.finished || !mb.finished) ; // Recombine the two arrays int ia = 0, ib = 0, i = 0; while(ia != a.length || ib != b.length) { if (ia == a.length) { x[i] = b[ib]; ib++; } else if (ib == b.length) { x[i] = a[ia]; ia++; } else if (a[ia] < b[ib]) { x[i] = a[ia]; ia++; } else { x[i] = b[ib]; ib++; } i++; } finished = true; } } It turns out that function that does not use multithreading actually runs faster. Why? Does the operating system and the java virtual machine not "communicate" effectively enough to place the different threads on different cores? Or am I missing something obvious?

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  • Using GA in GUI

    - by AlexT
    Sorry if this isn't clear as I'm writing this on a mobile device and I'm trying to make it quick. I've written a basic Genetic Algorithm with a binary encoding (genes) that builds a fitness value and evolves through several iterations using tournament selection, mutation and crossover. As a basic command-line example it seems to work. The problem I've got is with applying a genetic algorithm within a GUI as I am writing a maze-solving program that uses the GA to find a method through a maze. How do I turn my random binary encoded genes and fitness function (add all the binary values together) into a method to control a bot around a maze? I have built a basic GUI in Java consisting of a maze of labels (like a grid) with the available routes being in blue and the walls being in black. To reiterate my GA performs well and contains what any typical GA would (fitness method, get and set population, selection, crossover, etc) but now I need to plug it into a GUI to get my maze running. What needs to go where in order to get a bot that can move in different directions depending on what the GA says? Rough pseudocode would be great if possible As requested, an Individual is built using a separate class (Indiv), with all the main work being done in a Pop class. When a new individual is instantiated an array of ints represent the genes of said individual, with the genes being picked at random from a number between 0 and 1. The fitness function merely adds together the value of these genes and in the Pop class handles selection, mutation and crossover of two selected individuals. There's not much else to it, the command line program just shows evolution over n generations with the total fitness improving over each iteration. EDIT: It's starting to make a bit more sense now, although there are a few things that are bugging me... As Adamski has suggested I want to create an "Agent" with the options shown below. The problem I have is where the random bit string comes into play here. The agent knows where the walls are and has it laid out in a 4 bit string (i.e. 0111), but how does this affect the random 32 bit string? (i.e. 10001011011001001010011011010101) If I have the following maze (x is the start place, 2 is the goal, 1 is the wall): x 1 1 1 1 0 0 1 0 0 1 0 0 0 2 If I turn left I'm facing the wrong way and the agent will move completely off the maze if it moves forward. I assume that the first generation of the string will be completely random and it will evolve as the fitness grows but I don't get how the string will work within a maze. So, to get this straight... The fitness is the result of when the agent is able to move and is by a wall. The genes are a string of 32 bits, split into 16 sets of 2 bits to show the available actions and for the robot to move the two bits need to be passed with four bits from the agent showings its position near the walls. If the move is to go past a wall the move isn't made and it is deemed invalid and if the move is made and if a new wall is found then the fitness goes up. Is that right?

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  • Slider Position

    - by RobinHood
    I had used this code for to create a slider. It's working fine. I want to place the slider next to my label control. Like this (Slidder : Slidder Bar) How to do that? <div> <tr> <td class="aln-rht"> <asp:Label ID="Literal4" runat="server" Text="Slidder :" Font-Bold="true" /> </td> <td> <%=Html.DropDownList("Scale", null, "--Select Scale--", new { id = "speed1" , Style = "display:none"})%> </td> </tr> </div> <script type="text/javascript"> $(function () { var abc = $('select#speed1').selectToUISlider().next(); fixToolTipColor(); }); function fixToolTipColor() { $('.ui-tooltip-pointer-down-inner').each(function () { var bWidth = $('.ui-tooltip-pointer-down-inner').css('borderTopWidth'); var bColor = $(this).parents('.ui-slider-tooltip').css('backgroundColor') $(this).css('border-top', bWidth + ' Solid ' + bColor); }); } </script> The ui.slider.extras.css, selectToUISlider.JQuery.js and ui.slider.js files I had used This is JQuery-ui-1.7.1.custom.css, which i am using... .ui-slider { position: relative; text-align: left; } .ui-slider .ui-slider-handle { position: absolute; z-index: 2; width: 1.2em; height: 1.2em; cursor: default; border-color: Maroon; background-color: Olive} .ui-slider .ui-slider-range { position: absolute; z-index: 1; font-size: .7em; display: block; border: 0; } .ui-slider-horizontal { height: .8em; border-color: Olive;} .ui-slider-horizontal .ui-slider-handle { top: -.3em; margin-left: -.6em; } .ui-slider-horizontal .ui-slider-range { top: 0; height: 100%; } .ui-slider-horizontal .ui-slider-range-min { left: 0; } .ui-slider-horizontal .ui-slider-range-max { right: 0; } .ui-slider-vertical { width: .8em; height: 100px; border-color: Olive; } .ui-slider-vertical .ui-slider-handle { left: -.3em; margin-left: 0; margin-bottom: -.6em; } .ui-slider-vertical .ui-slider-range { left: 0; width: 100%; } .ui-slider-vertical .ui-slider-range-min { bottom: 0; } .ui-slider-vertical .ui-slider-range-max { top: 0; }/* Tabs

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  • Is asp.net caching my sql results?

    - by Christian W
    I have the following method in an App_Code/Globals.cs file: public static XmlDataSource getXmlSourceFromOrgid(int orgid) { XmlDataSource xds = new XmlDataSource(); var ctx = new SensusDataContext(); SqlConnection c = new SqlConnection(ctx.Connection.ConnectionString); c.Open(); SqlCommand cmd = new SqlCommand(String.Format("select orgid, tekst, dbo.GetOrgTreeXML({0}) as Subtree from tblOrg where OrgID = {0}", orgid), c); var rdr = cmd.ExecuteReader(); rdr.Read(); StringBuilder sb = new StringBuilder(); sb.AppendFormat("&lt;node orgid=\"{0}\" tekst=\"{1}\"&gt;",rdr.GetInt32(0),rdr.GetString(1)); sb.Append(rdr.GetString(2)); sb.Append("&lt;/node&gt;"); xds.Data = sb.ToString(); xds.ID = "treedata"; rdr.Close(); c.Close(); return xds; } This gives me an XML-structure to use with the asp.net treeview control (I also use the CssFriendly extender to get nicer code) My problem is that if I logon on my pc with a code that gives me access on a lower level in the tree hierarchy (it's an orgianization hierarchy), it somehow "remembers" what level i logon at. So when my coworker tests from her computer with another code, giving access to another place in the tree, she get's the same tree as me. (The tree is supposed to show your own level and down.) I have added a html-comment to show what orgid it passes to the function, and the orgid passed is correct. So either the treeview caches something serverside, or the sqlquery caches it's result somehow... Any ideas? Sql function: ALTER function [dbo].[GetOrgTreeXML](@orgid int) returns XML begin RETURN (select org.orgid as '@orgid', org.tekst as '@tekst', [dbo].GetOrgTreeXML(org.orgid) from tblOrg org where (@orgid is null and Eier is null) or Eier=@orgid for XML PATH('NODE'), TYPE) end Extra code as requested: int orgid = int.Parse(Session["org"].ToString()); string orgname = context.Orgs.Where(q => q.OrgID == orgid).First().Tekst; debuglit.Text = String.Format("<!-- Id: {0} \n name: {1} -->", orgid, orgname); var orgxml = Globals.getXmlSourceFromOrgid(orgid); tvNavtree.DataSource = orgxml; tvNavtree.DataBind(); Where "debuglit" is a asp:Literal in the aspx file. EDIT: I have narrowed it down. All functions returns correct values. It just doesn't bind to it. I suspect the CssFriendly adapter to have something to do with it. I disabled the CssFriendly adapter and the problem persists... Stepping through it in debug it's correct all the way, with the stepper standing on "tvNavtree.DataBind();" I can hover the pointer over the tvNavtree.Datasource and see that it actually has the correct data. So something must be faulting in the binding process...

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  • openDatabase Hello World - 2

    - by cf_PhillipSenn
    This is a continuation from a previous stackoverflow question. I've renamed some variables so that I can tell what are keywords and what are names that I can control. Q: Why is the deleteRow function not working? <html> <head> <title>html5 openDatabase Hello World</title> <script src="http://www.google.com/jsapi"></script> <script type="text/javascript"> google.load("jquery", "1"); google.setOnLoadCallback(OnLoadCallback); function OnLoadCallback() { var dbo; dbo = openDatabase('HelloWorld'); dbo.transaction( function(T1) { T1.executeSql( 'CREATE TABLE IF NOT EXISTS myTable ' + ' (myTableID INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, ' + ' Field1 TEXT NOT NULL );' ); } ); dbo.transaction(function(T2) { T2.executeSql('SELECT * FROM myTable',[], function (T6, result) { for (var i=0; i < result.rows.length; i++) { var row = result.rows.item(i); $('#savedData').append('<li id="'+row.myTableID+'">' + row.Field1 + '</li>'); } }, errorHandler); }); $('form').submit(function() { var xxx = $('#xxx').val(); dbo.transaction( function(T3) { T3.executeSql( 'INSERT INTO myTable (Field1) VALUES (?);', [xxx], function(){ $('#savedData').append('<li id="ThisisWhereIneedHELP">' + xxx + '</li>'); $('#xxx').val(''); }, errorHandler ); } ); return false; }); $('#savedData > li').live('click', function (){ deleteRow(this.id); $(this).remove(); }); } function deleteRow(myTableID) { alert('trying to delete'); dbo.transaction(function(T4) { T4.executeSql('DELETE FROM myTable WHERE myTableID = ?', [myTableID], function(){ alert('Deleted!'); }, errorHandler); }); } function errorHandler(T5, error) { alert('Oops. Error was '+error.message+' (Code '+error.code+')'); // T5.executeSql('INSERT INTO errors (code, message) VALUES (?, ?);', // [error.code, error.message]); return false; } </script> </head> <body> <form method="post"> <input name="xxx" id="xxx" /> <p> <input type="submit" name="OK" /> </p> <ul id="savedData"> </ul> </form> </body> </html>

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  • Google Chrome Frame and Facebook Javascript SDK - Cannot login

    - by Giannis Savvakis
    On the example below i have an html page with the javascript code needed to login to facebook. On the i have the Google Chrome Frame meta tag that makes the page run with google chrome frame. If you open this page with any browser the finish() callback runs normally. If you open it with Google Chrome Frame it never fires. So this means that every Facebook App that tries to login to gather user data cannot login. This happens if the page is opened with google frame. But even if i remove the meta tag so that the page can open with IE8 the page opens again with google chrome frame because Facebook opens google chrome frame by default. So because this is a Facebook app that runs inside an inside facebook.com it is forced to open with Google Chrome Frame! SERIOUS BUG! I have seen other people reporting it, someone has made a test facebook app also here: http://apps.facebook.com/gcftest/ appID and channelUrl are dummy in the example below. <html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml"> <head> <meta name="generator" content= "HTML Tidy for Linux/x86 (vers 11 February 2007), see www.w3.org" /> <meta charset="utf-8" /> <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" /> <meta http-equiv="Pragma" content="no-cache" /> <meta http-equiv="Expires" content="0" /> <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=IE8" /> <title>Facebook Login</title> <script type="text/javascript"> //<![CDATA[ // Load the SDK Asynchronously (function(d){ var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0]; if (d.getElementById(id)) { return; } js = d.createElement('script'); js.id = id; js.async = true; js.src = "//connect.facebook.net/en_US/all.js"; ref.parentNode.insertBefore(js, ref); }(document)); var appID = '0000000000000'; var channelUrl = '//myhost/channel.html'; // Init the SDK upon load window.fbAsyncInit = function() { FB.init({ appId : appID, // App ID channelUrl : channelUrl, status : true, // check login status cookie : true, // enable cookies to allow the server to access the session xfbml : true // parse XFBML }); FB.Event.subscribe('auth.statusChange', function(response) { if(!response.authResponse) FB.login(finish, {scope: 'publish_actions,publish_stream'}); else finish(response); }); FB.getLoginStatus(finish); } function finish(response) { alert("Hello "+response.name); } //]]> </script> </head> <body> <h1>Facebook login</h1> <p>Do NOT close this window.</p> <p>please wait...</p> </body> </html>

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  • Sharepoint RSS feed description fields as elements

    - by Jay
    Hello, This is my first time working with RSS but I am fluent with XML/XSL. I have a RSS feed that I am pulling from a list in Sharepoint. The sample XML is below. The RSS description element parses the various columns (Body, Expires, Attachments) that are in the Sharepoint list automatically. I know that from the list I can control which fields are included in the description, but this is not what I am looking to do. Is there any way to force the fields to come through in an XML element format instead of the CDATA that converted to HTML? For example, I may want to check a priority field and if it is important when applying the XSL I would bold red it or something. Since this is in the HTML/CDATA format it makes it messy to parse that field. <rss version="2.0"> <channel> <title>Announcements</title> <link>http://somewebsite/Announcements/Current.aspx</link> <description>RSS feed for the Announcements list.</description> <lastBuildDate>Thu, 13 Aug 2009 17:31:01 GMT</lastBuildDate> <generator>Windows SharePoint Services V3 RSS Generator</generator> <ttl>1</ttl> <image> <title>Announcements</title> <url>/_layouts/images/homepage.gif</url> <link>http://somewebsite/Announcements/Current.aspx</link> </image> <item> <title>Woohoo a post! </title> <link>http://somewebsite/Announcements/DispForm.aspx?ID=36</link> <description> <![CDATA[<div><b>Body:</b> <div> <div>The attached email was sent from chairman and CEO on Tuesday March 3, 2009.</div> <div></div></div></div> <div><b>Expires:</b> 7/30/2009</div> <div><b>Attachments:</b> <a href="http://somewebsite/Woohoo.htm">http://somewebsite/Woohoo.htm</a><br><a href=""></a></div> ]]> </description> <author>Me, Myself and I</author> <pubDate>Thu, 16 Jul 2009 18:38:32 GMT</pubDate> <guid isPermaLink="true">http://somewebsite/Announcements/DispForm.aspx?ID=69</guid> </item> </channel> </rss>

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  • event capturing or bubbling

    - by ChampionChris
    I have a link button in a repeater control. the li element is drag and droppable using jquery. when the page loads the the link button works perfectly, the jquery that is attached and the server side code both execute. when I perform a drag and drop then click on the link button it doesn't not fire. when i click it a second time it does fire. If i perform 2 or drag and drops in a row the link button doesn't fire a as many drag and drops as i before it will fire. for example if if perform 3 drag and drops then it will take about 3 click before the events are fired. <asp:Repeater ID="rTracks" runat="server" OnItemDataBound="rTracks_ItemDataBound" EnableViewState="true"> <ItemTemplate> <li onclick="testclick();" class='admin-song ui-selectee <asp:Literal id="ltStatusClass" runat="server" />' mediaid="<%# Eval("MediaId") %>" artistid="<%# Eval("tbMedia.tbArtists.id") %>"><span class="handle"><strong> <%--<%# int.Parse(DataBinder.Eval(Container, "ItemIndex", "")) + 1%>--%><%# Eval("SortNumber")%></strong><%--0:03--%></span> <span class="play"><span class="btn-play">&nbsp;</span></span> <span class="track" title="<%# Eval("tbMedia.Title") %>"> <%# Eval("tbMedia.Title") %></span> <span class="artist"> <%# Eval("tbMedia.tbArtists.Name") %></span> <span class="time" length="<%# Eval("tbMedia.Length") %>"> <asp:Literal ID="ltRuntime" runat="server" /></span> <span class="notes"><span class="btn-notes"> <asp:Literal ID="ltNotesCount" runat="server" /></span></span> <span class="status"> <asp:Literal ID="ltStatus" runat="server" /></span> <span class="date"> <%# Eval("DateAdded") %></span> <span class="remove"><asp:LinkButton ID="lbStatusClass2" runat="server" CssClass="btn-del" OnClick="UpdateStatus" ValidationGroup='<%#Bind("MediaId") %>'> <%--<span class='<asp:Literal id="ltStatusClass2" runat="server" Text="btn-del" />'>--%> &nbsp;<%--</span>--%></asp:LinkButton></span></span> </li> </ItemTemplate> </asp:Repeater> I have onclick event on the li element, when the mouse is clicks the link button the li onclick event is fired even when linkbutton event doesnt fire. My question is if the li captures the event y doesnt the event fire on the linkbutton? What would be stopping the event?

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  • How to hide/show a Process using c#?

    - by aF
    Hello, While executing my program, I want to hide/minimize Microsoft Speech Recognition Application: and at the end I want to show/maximize using c#! This process is not started by me so I can't give control the process startInfo. I've tried to use user32.dll methods such as: ShowWindow AnimatedWindows AnimatedWindows With all of them I have the same problem. I can hide the windows (althought I have to call one of the methods two times with SW_HIDE option), but when I call the method with a SW_SHOW flag, it simply doesn't shows.. How can I maximize/show after hiding the process? Thanks in advance! Here is some pieces of the code, now implemented to use SetWindowPlacement: { [DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] public static extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl); [DllImport("user32.dll", SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] static extern bool SetWindowPlacement(IntPtr hWnd, [In] ref WINDOWPLACEMENT lpwndpl); [DllImport("user32.dll")] public static extern Boolean ShowWindowAsync(IntPtr hWnd, Int32 nCmdShow); [DllImport("user32.dll")] public static extern Boolean SetForegroundWindow(IntPtr hWnd); [DllImport("user32.dll")] public static extern Boolean ShowWindow(IntPtr hWnd, Int32 nCmdShow); [DllImport("user32.dll")] public static extern Boolean AnimateWindow(IntPtr hWnd, uint dwTime, uint dwFlags); [DllImport("dwmapi.dll")] public static extern int DwmSetWindowAttribute(IntPtr hwnd, uint dwAttribute, IntPtr pvAttribute, IntPtr lol); //Definitions For Different Window Placement Constants const UInt32 SW_HIDE = 0; const UInt32 SW_SHOWNORMAL = 1; const UInt32 SW_NORMAL = 1; const UInt32 SW_SHOWMINIMIZED = 2; const UInt32 SW_SHOWMAXIMIZED = 3; const UInt32 SW_MAXIMIZE = 3; const UInt32 SW_SHOWNOACTIVATE = 4; const UInt32 SW_SHOW = 5; const UInt32 SW_MINIMIZE = 6; const UInt32 SW_SHOWMINNOACTIVE = 7; const UInt32 SW_SHOWNA = 8; const UInt32 SW_RESTORE = 9; public sealed class AnimateWindowFlags { public const int AW_HOR_POSITIVE = 0x00000001; public const int AW_HOR_NEGATIVE = 0x00000002; public const int AW_VER_POSITIVE = 0x00000004; public const int AW_VER_NEGATIVE = 0x00000008; public const int AW_CENTER = 0x00000010; public const int AW_HIDE = 0x00010000; public const int AW_ACTIVATE = 0x00020000; public const int AW_SLIDE = 0x00040000; public const int AW_BLEND = 0x00080000; } public struct WINDOWPLACEMENT { public int length; public int flags; public int showCmd; public System.Drawing.Point ptMinPosition; public System.Drawing.Point ptMaxPosition; public System.Drawing.Rectangle rcNormalPosition; } //this works param = new WINDOWPLACEMENT(); param.length = Marshal.SizeOf(typeof(WINDOWPLACEMENT)); param.showCmd = (int)SW_HIDE; lol = SetWindowPlacement(theprocess.MainWindowHandle, ref param); // this doesn't work WINDOWPLACEMENT param = new WINDOWPLACEMENT(); param.length = Marshal.SizeOf(typeof(WINDOWPLACEMENT)); param.showCmd = SW_SHOW; lol = GetWindowPlacement(theprocess.MainWindowHandle, ref param);

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  • Cannot see the variable In my own JQuery plugin's function.

    - by qinHaiXiang
    I am writing one of my own JQuery plugin. And I got some strange which make me confused. I am using JQuery UI datepicker with my plugin. ;(function($){ var newMW = 1, mwZIndex = 0; // IgtoMW contructor Igtomw = function(elem , options){ var activePanel, lastPanel, daysWithRecords, sliding; // used to check the animation below is executed to the end. // used to access the plugin's default configuration this.opts = $.extend({}, $.fn.igtomw.defaults, options); // intial the model window this.intialMW(); }; $.extend(Igtomw.prototype, { // intial model window intialMW : function(){ this.sliding = false; //this.daysWithRecords = []; this.igtoMW = $('<div />',{'id':'igto'+newMW,'class':'igtoMW',}) .css({'z-index':mwZIndex}) // make it in front of all exist model window; .appendTo('body') .draggable({ containment: 'parent' , handle: '.dragHandle' , distance: 5 }); //var igtoWrapper = igtoMW.append($('<div />',{'class':'igtoWrapper'})); this.igtoWrapper = $('<div />',{'class':'igtoWrapper'}).appendTo(this.igtoMW); this.igtoOpacityBody = $('<div />',{'class':'igtoOpacityBody'}).appendTo(this.igtoMW); //var igtoHeaderInfo = igtoWrapper.append($('<div />',{'class':'igtoHeaderInfo dragHandle'})); this.igtoHeaderInfo = $('<div />',{'class':'igtoHeaderInfo dragHandle'}) .appendTo(this.igtoWrapper); this.igtoQuickNavigation = $('<div />',{'class':'igtoQuickNavigation'}) .css({'color':'#fff'}) .appendTo(this.igtoWrapper); this.igtoContentSlider = $('<div />',{'class':'igtoContentSlider'}) .appendTo(this.igtoWrapper); this.igtoQuickMenu = $('<div />',{'class':'igtoQuickMenu'}) .appendTo(this.igtoWrapper); this.igtoFooter = $('<div />',{'class':'igtoFooter dragHandle'}) .appendTo(this.igtoWrapper); // append to igtoHeaderInfo this.headTitle = this.igtoHeaderInfo.append($('<div />',{'class':'headTitle'})); // append to igtoQuickNavigation this.igQuickNav = $('<div />', {'class':'igQuickNav'}) .html('??') .appendTo(this.igtoQuickNavigation); // append to igtoContentSlider this.igInnerPanelTopMenu = $('<div />',{'class':'igInnerPanelTopMenu'}) .appendTo(this.igtoContentSlider); this.igInnerPanelTopMenu.append('<div class="igInnerPanelButtonPreWrapper"><a href="" class="igInnerPanelButton Pre" action="" style="background-image:url(images/igto/igInnerPanelTopMenu.bt.bg.png);"></a></div>'); this.igInnerPanelTopMenu.append('<div class="igInnerPanelSearch"><input type="text" name="igInnerSearch" /><a href="" class="igInnerSearch">??</a></div>' ); this.igInnerPanelTopMenu.append('<div class="igInnerPanelButtonNextWrapper"><a href="" class="igInnerPanelButton Next" action="sm" style="background-image:url(images/igto/igInnerPanelTopMenu.bt.bg.png); background-position:-272px"></a></div>' ); this.igInnerPanelBottomMenu = $('<div />',{'class':'igInnerPanelBottomMenu'}) .appendTo(this.igtoContentSlider); this.icWrapper = $('<div />',{'class':'icWrapper','id':'igto'+newMW+'Panel'}) .appendTo(this.igtoContentSlider); this.icWrapperCotentPre = $('<div class="slider pre"></div>').appendTo(this.icWrapper); this.icWrapperCotentShow = $('<div class="slider firstShow "></div>').appendTo(this.icWrapper); this.icWrapperCotentnext = $('<div class="slider next"></div>').appendTo(this.icWrapper); this.initialPanel(); this.initialQuickMenus(); console.log(this.leftPad(9)); newMW++; mwZIndex++; this.igtoMW.bind('mousedown',function(){ var $this = $(this); //alert($this.css('z-index') + ' '+mwZIndex); if( parseInt($this.css('z-index')) === (mwZIndex-1) ) return; $this.css({'z-index':mwZIndex}); mwZIndex++; //alert(mwZIndex); }); }, initialPanel : function(){ this.defaultPanelNum = this.opts.initialPanel; this.activePanel = this.defaultPanelNum; this.lastPanel = this.defaultPanelNum; this.defaultPanel = this.loadPanelContents(this.defaultPanelNum); $(this.defaultPanel).appendTo(this.icWrapperCotentShow); }, initialQuickMenus : function(){ // store the current element var obj = this; var defaultQM = this.opts.initialQuickMenu; var strMenu = ''; var marginFirstEle = '8'; $.each(defaultQM,function(key,value){ //alert(key+':'+value); if(marginFirstEle === '8'){ strMenu += '<a href="" class="btPanel" panel="'+key+'" style="margin-left: 8px;" >'+value+'</a>'; marginFirstEle = '4'; } else{ strMenu += '<a href="" class="btPanel" panel="'+key+'" style="margin-left: 4px;" >'+value+'</a>'; } }); // append to igtoQuickMenu this.igtoQMenu = $(strMenu).appendTo(this.igtoQuickMenu); this.igtoQMenu.bind('click',function(event){ event.preventDefault(); var element = $(this); if(element.is('.active')){ return; } else{ $(obj.igtoQMenu).removeClass('active'); element.addClass('active'); } var d = new Date(); var year = d.getFullYear(); var month = obj.leftPad( d.getMonth() ); var inst = null; if( obj.sliding === false){ console.log(obj.lastPanel); var currentPanelNum = parseInt(element.attr('panel')); obj.checkAvailability(); obj.getDays(year,month,inst,currentPanelNum); obj.slidePanel(currentPanelNum); obj.activePanel = currentPanelNum; console.log(obj.activePanel); obj.lastPanel = obj.activePanel; obj.icWrapper.find('input').val(obj.activePanel); } }); }, initialLoginPanel : function(){ var obj = this; this.igPanelLogin = $('<div />',{'class':"igPanelLogin"}); this.igEnterName = $('<div />',{'class':"igEnterName"}).appendTo(this.igPanelLogin); this.igInput = $('<input type="text" name="name" value="???" />').appendTo(this.igEnterName); this.igtoLoginBtWrap = $('<div />',{'class':"igButtons"}).appendTo(this.igPanelLogin); this.igtoLoginBt = $('<a href="" class="igtoLoginBt" action="OK" >??</a>\ <a href="" class="igtoLoginBt" action="CANCEL" >??</a>\ <a href="" class="igtoLoginBt" action="ADD" >????</a>').appendTo(this.igtoLoginBtWrap); this.igtoLoginBt.bind('click',function(event){ event.preventDefault(); var elem = $(this); var action = elem.attr('action'); var userName = obj.igInput.val(); obj.loadRootMenu(); }); return this.igPanelLogin; }, initialWatchHistory : function(){ var obj = this; // for thirt part plugin used if(this.sliding === false){ this.watchHistory = $('<div />',{'class':'igInnerPanelSlider'}).append($('<div />',{'class':'igInnerPanel_pre'}).addClass('igInnerPanel')) .append($('<div />',{'class':'igInnerPanel'}).datepicker({ dateFormat: 'yy-mm-dd',defaultDate: '2010-12-01' ,showWeek: true,firstDay: 1, //beforeShow:setDateStatistics(), onChangeMonthYear:function(year, month, inst) { var panelNum = 1; month = obj.leftPad(month); obj.getDays(year,month,inst,panelNum); } , beforeShowDay: obj.checkAvailability, onSelect: function(dateText, inst) { obj.checkAvailability(); } }).append($('<div />',{'class':'extraMenu'})) ) .append($('<div />',{'class':'igInnerPanel_next'}).addClass('igInnerPanel')); return this.watchHistory; } }, loadPanelContents : function(panelNum){ switch(panelNum){ case 1: alert('inside loadPanelContents') return this.initialWatchHistory(); break; case 2: return this.initialWatchHistory(); break; case 3: return this.initialWatchHistory(); break; case 4: return this.initialWatchHistory(); break; case 5: return this.initialLoginPanel(); break; } }, loadRootMenu : function(){ var obj = this; var mainMenuPanel = $('<div />',{'class':'igRootMenu'}); var currentMWId = this.igtoMW.attr('id'); this.activePanel = 0; $('#'+currentMWId+'Panel .pre'). queue(function(next){ $(this). html(mainMenuPanel). addClass('panelShow'). removeClass('pre'). attr('panelNum',0); next(); }). queue(function(next){ $('<div style="width:0;" class="slider pre"></div>'). prependTo('#'+currentMWId+'Panel').animate({width:348}, function(){ $('#'+currentMWId+'Panel .slider:last').remove() $('#'+currentMWId+'Panel .slider:last').replaceWith('<div class="slider next"></div>'); $('.btMenu').remove(); // remove bottom quick menu obj.sliding = false; $(this).removeAttr('style'); }); $('.igtoQuickMenu .active').removeClass('active'); next(); }); }, slidePanel : function(currentPanelNum){ var currentMWId = this.igtoMW.attr('id'); var obj = this; //alert(obj.loadPanelContents(currentPanelNum)); if( this.activePanel > currentPanelNum){ $('#'+currentMWId+'Panel .pre'). queue(function(next){ alert('inside slidePanel') //var initialDate = getPanelDateStatus(panelNum); //console.log('intial day in bigger panel '+initialDate) $(this). html(obj.loadPanelContents(currentPanelNum)). addClass('panelShow'). removeClass('pre'). attr('panelNum',currentPanelNum); $('#'+currentMWId+'Panel .next').remove(); next(); }). queue(function(next){ $('<div style="width:0;" class="slider pre"></div>'). prependTo('#'+currentMWId+'Panel').animate({width:348}, function(){ //$('#igto1Panel .slider:last').find(setPanel(currentPanelNum)).datepicker('destroy'); $('#'+currentMWId+'Panel .slider:last').empty().removeClass('panelShow').addClass('next').removeAttr('panelNum'); $('#'+currentMWId+'Panel .slider:last').replaceWith('<div class="slider next"></div>') obj.sliding = false;console.log('inuse inside animation: '+obj.sliding); $(this).removeAttr('style'); }); next(); }); } else{ ///// current panel num smaller than next $('#'+currentMWId+'Panel .next'). queue(function(next){ $(this). html(obj.loadPanelContents(currentPanelNum)). addClass('panelShow'). removeClass('next'). attr('panelNum',currentPanelNum); $('<div class="slider next">empty</div>').appendTo('#'+currentMWId+'Panel'); next(); }). queue(function(next){ $('#'+currentMWId+'Panel .pre').animate({width:0}, function(){ $(this).remove(); //$('#igto1Panel .slider:first').find(setPanel(currentPanelNum)).datepicker('destroy'); $('#'+currentMWId+'Panel .slider:first').empty().removeClass('panelShow').addClass('pre').removeAttr('panelNum').removeAttr('style'); $('#'+currentMWId+'Panel .slider:first').replaceWith('<div class="slider pre"></div>') obj.sliding = false; console.log('inuse inside animation: '+obj.sliding); }); next(); }); } }, getDays : function(year,month,inst,panelNum){ var obj = this; // depand on the mysql qurey condition var table_of_record = 'moviewh';//getTable(panelNum); var date_of_record = 'watching_date';//getTableDateCol(panelNum); var date_to_find = year+'-'+month; var node_of_xml_date_list = 'whDateRecords';//getXMLDateNode(panelNum); var user_id = '1';//getLoginUserId(); //var daysWithRecords = []; // empty array before asigning this.daysWithRecords.length = 0; $.ajax({ type: "GET", url: "include/get.date.list.process.php", data:({ table_of_record : table_of_record,date_of_record:date_of_record,date_to_find:date_to_find,user_id:user_id,node_of_xml_date_list:node_of_xml_date_list }), dataType: "json", cache: false, // force broser don't cache the xml file async: false, // using this option to prevent datepicker refresh ??NO success:function(data){ // had no date records if(data === null) return; obj.daysWithRecords = data; } }); //setPanelDateStatus(year,month,panelNum); console.log('call from getdays() ' + this.daysWithRecords); }, checkAvailability : function(availableDays) { // var i; var checkdate = $.datepicker.formatDate('yy-mm-dd', availableDays); //console.log( checkdate); // for(var i = 0; i < this.daysWithRecords.length; i++) { // // if(this.daysWithRecords[i] == checkdate){ // // return [true, "available"]; // } // } //console.log('inside check availablility '+ this.daysWithRecords); //return [true, "available"]; console.log(typeof this.daysWithRecords) for(i in this.daysWithRecords){ //if(this.daysWithRecords[i] == checkdate){ console.log(typeof this.daysWithRecords[i]); //return [true, "available"]; //} } return [true, "available"]; //return [false, ""]; }, leftPad : function(num) { return (num < 10) ? '0' + num : num; } }); $.fn.igtomw = function(options){ // Merge options passed in with global defaults var opt = $.extend({}, $.fn.igtomw.defaults , options); return this.each(function() { new Igtomw(this,opt); }); }; $.fn.igtomw.defaults = { // 0:mainMenu 1:whatchHistor 2:requestHistory 3:userManager // 4:shoppingCart 5:loginPanel initialPanel : 5, // default panel is LoginPanel initialQuickMenu : {'1':'whatchHIstory','2':'????','3':'????','4':'????'} // defalut quick menu }; })(jQuery); usage: $('.openMW').click(function(event){ event.preventDefault(); $('<div class="">').igtomw(); }) HTML code: <div id="taskBarAndStartMenu"> <div class="taskBarAndStartMenuM"> <a href="" class="openMW" >??IGTO</a> </div> <div class="taskBarAndStartMenuO"></div> </div> In my work flow: when I click the "whatchHistory" button, my plugin would load a panel with JQuery UI datepicker applied which days had been set to be availabled or not. I am using the function "getDays()" to get the available days list and stored the data inside daysWithRecords, and final the UI datepicker's function "beforeShowDay()" called the function "checkAvailability()" to set the days. the variable "daysWithRecords" was declared inside Igtomw = function(elem , options) and was initialized inside the function getDays() I am using the function "initialWatchHistory()" to initialization and render the JQuery UI datepicker in the web. My problem is the function "checkAvailability()" cannot see the variable "daysWithRecords".The firebug prompts me that "daysWithRecords" is "undefined". this is the first time I write my first plugin. So .... Thank you very much for any help!!

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  • Nhibernate Migration from 1.0.2.0 to 2.1.2 and many-to-one save problems

    - by Meska
    Hi, we have an old, big asp.net application with nhibernate, which we are extending and upgrading some parts of it. NHibernate that was used was pretty old ( 1.0.2.0), so we decided to upgrade to ( 2.1.2) for the new features. HBM files are generated through custom template with MyGeneration. Everything went quite smoothly, except for one thing. Lets say we have to objects Blog and Post. Blog can have many posts, so Post will have many-to-one relationship. Due to the way that this application operates, relationship is done not through primary keys, but through Blog.Reference column. Sample mapings and .cs files: <?xml version="1.0" encoding="utf-8" ?> <id name="Id" column="Id" type="Guid"> <generator class="assigned"/> </id> <property column="Reference" type="Int32" name="Reference" not-null="true" /> <property column="Name" type="String" name="Name" length="250" /> </class> <?xml version="1.0" encoding="utf-8" ?> <id name="Id" column="Id" type="Guid"> <generator class="assigned"/> </id> <property column="Reference" type="Int32" name="Reference" not-null="true" /> <property column="Name" type="String" name="Name" length="250" /> <many-to-one name="Blog" column="BlogId" class="SampleNamespace.BlogEntity,SampleNamespace" property-ref="Reference" /> </class> And class files class BlogEntity { public Guid Id { get; set; } public int Reference { get; set; } public string Name { get; set; } } class PostEntity { public Guid Id { get; set; } public int Reference { get; set; } public string Name { get; set; } public BlogEntity Blog { get; set; } } Now lets say that i have a Blog with Id 1D270C7B-090D-47E2-8CC5-A3D145838D9C and with Reference 1 In old nhibernate such thing was possible: //this Blog already exists in database BlogEntity blog = new BlogEntity(); blog.Id = Guid.Empty; blog.Reference = 1; //Reference is unique, so we can distinguish Blog by this field blog.Name = "My blog"; //this is new Post, that we are trying to insert PostEntity post = new PostEntity(); post.Id = Guid.NewGuid(); post.Name = "New post"; post.Reference = 1234; post.Blog = blog; session.Save(post); However, in new version, i get an exception that cannot insert NULL into Post.BlogId. As i understand, in old version, for nhibernate it was enough to have Blog.Reference field, and it could retrieve entity by that field, and attach it to PostEntity, and when saving PostEntity, everything would work correctly. And as i understand, new NHibernate tries only to retrieve by Blog.Id. How to solve this? I cannot change DB design, nor can i assign an Id to BlogEntity, as objects are out of my control (they come prefilled as generic "ojbects" like this from external source)

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  • listview and datalist not updating,inserting

    - by raging_boner
    Data entered in textboxes is not getting updated in database. In debug mode I see that text1 and text2 in ItemUpdating event contain the same values as they had before calling ItemUpdating. Here's my listview control: <asp:ListView ID="ListView1" runat="server" onitemediting="ListView1_ItemEditing" onitemupdating="ListView1_ItemUpdating" oniteminserting="ListView1_ItemInserting"> //LayoutTemplate removed <ItemTemplate> <asp:Label ID="Label2" runat="server" Text='<%#Eval("id")%>'></asp:Label> <asp:Label ID="Label3" runat="server" Text='<%#Eval("text1")%>'></asp:Label> <asp:LinkButton ID="LinkButton2" CommandName="Edit" runat="server">Edit</asp:LinkButton> <asp:LinkButton ID="LinkButton4" CommandName="Delete" runat="server">Delete</asp:LinkButton> </ItemTemplate> <EditItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%#Eval("id")%>'></asp:Label> <asp:TextBox ID="TextBox1" runat="server" Text='<%#Eval("text1")%>' TextMode="MultiLine" /> <asp:TextBox ID="TextBox2" runat="server" Text='<%#Eval("text2")%>' Height="100" TextMode="MultiLine" /> <asp:LinkButton ID="LinkButton1" CommandName="Update" CommandArgument='<%# Eval("id")%>' runat="server">Update</asp:LinkButton> <asp:LinkButton ID="LinkButton5" CommandName="Cancel" runat="server">Cancel</asp:LinkButton> </EditItemTemplate> <InsertItemTemplate> <asp:TextBox ID="TextBox3" runat="server" TextMode="MultiLine" Height="100"></asp:TextBox> <asp:TextBox ID="TextBox4" runat="server" Height="100" TextMode="MultiLine"></asp:TextBox> <asp:LinkButton ID="LinkButton3" runat="server">Insert</asp:LinkButton> </InsertItemTemplate> </asp:ListView> Codebehind file: protected void ListView1_ItemEditing(object sender, ListViewEditEventArgs e) { ListView1.EditIndex = e.NewEditIndex; BindList(); } protected void ListView1_ItemUpdating(object sender, ListViewUpdateEventArgs e) { ListViewItem myItem = ListView1.Items[ListView1.EditIndex]; Label id = (Label)myItem.FindControl("Label1"); int dbid = int.Parse(id.Text); TextBox text1 = (TextBox)myItem.FindControl("Textbox1"); TextBox text2 = (TextBox)myItem.FindControl("Textbox2"); //tried to work withNewValues below, but they don't work, "null reference" error is being thrown //text1.Text = e.NewValues["text1"].ToString(); //text2.Text = e.NewValues["text2"].ToString(); //odbc connection routine removed. //i know that there should be odbc parameteres: comm = new OdbcCommand("UPDATE table SET text1 = '" + text1.Text + "', text2 = '" + text2.Text + "' WHERE id = '" + dbid + "'", connection); comm.ExecuteNonQuery(); conn.Close(); ListView1.EditIndex = -1; //here I databind ListView1 } What's wrong with updating of text1.Text, text2.Text in ItemUpdating event? Should I use e.NewValues property? If so, how to use it? Thanks in advance for any help.

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  • MVC design in Cocoa - are all 3 always necessary? Also: naming conventions, where to put Controller

    - by Nektarios
    I'm new to MVC although I've read a lot of papers and information on the web. I know it's somewhat ambiguous and there are many different interpretations of MVC patterns.. but the differences seem somewhat minimal My main question is - are M, V, and C always going to be necessary to be doing this right? I haven't seen anyone address this in anything I've read. Examples (I'm working in Cocoa/Obj-c although that shouldn't much matter).. 1) If I have a simple image on my GUI, or a text entry field that is just for a user's convenience and isn't saved or modified, these both would be V (view) but there's no M (no data and no domain processing going on), and no C to bridge them. So I just have some aspects that are "V" - seems fine 2) I have 2 different and visible windows that each have a button on them labeled as "ACTIVATE FOO" - when a user clicks the button on either, both buttons press in and change to say "DEACTIVATE FOO" and a third window appears with label "FOO". Clicking the button again will change the button on both windows to "ACTIVATE FOO" and will remove the third "FOO" window. In this case, my V consists of the buttons on both windows, and I guess also the third window (maybe all 3 windows). I definitely have a C, my Controller object will know about these buttons and windows and will get their clicks and hold generic states regarding windows and buttons. However, whether I have 1 button or 10 button, my window is called "FOO" or my window is called "BAR", this doesn't matter. There's no domain knowledge or data here - just control of views. So in this example, I really have "V" and "C" but no "M" - is that ok? 3) Final example, which I am running in to the most. I have a text entry field as my View. When I enter text in this, say a number representing gravity, I keep it in a Model that may do things like compute physics of a ball while taking in to account my gravity parameter. Here I have a V and an M, but I don't understand why I would need to add a C - a controller would just accept the signals from the View and pass it along to the Model, and vice versa. Being as the C is just a pure passthrough, it's really "junk" code and isn't making things any more reusable in my opinion. In most situations, when something changes I will need to change the C and M both in nearly identical ways. I realize it's probably an MVC beginner's mistake to think most situations call for only V and M.. leads me in to next subject 4) In Cocoa / Xcode / IB, I guess my Controllers should always be an instantiated object in IB? That is, I lay all of my "V" components in IB, and for each collection of View objects (things that are related) I should have an instantiated Controller? And then perhaps my Models should NOT be found in IB, and instead only found as classes in Xcode that tie in with Controller code found there. Is this accurate? This could explain why you'd have a Controller that is not really adding value - because you are keeping consistent.. 5) What about naming these things - for my above example about FOO / BAR maybe something that ends in Controller would be the C, like FancyWindowOpeningController, etc? And for models - should I suffix them with like GravityBallPhysicsModel etc, or should I just name those whatever I like? I haven't seen enough code to know what's out there in the wild and I want to get on the right track early on Thank you in advance for setting me straight or letting me know I'm on the right track. I feel like I'm starting to get it and most of what I say here makes sense, but validation of my guessing would help me feel confident..

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  • ASP.Net/C# File Upload Progress Display

    - by Ioxp
    I am having a hard time figuring out how to do a "Please wait while file is uploading" message when the user submits the following form. So far the application works to specification with regards to checking files and uploading to the server. You will see some java script below, this is there to allow me to fake out the style of the file up load buttons so that it matches the rest of the site. I have tried to use the ASP.Net Ajax controls to do this however the updateprogress panel would not show up. In further reading it was explained that this has something to do with the Asynchronous transfer that the file upload control uses when you issue a PostedFile.SaveAs("filename") command. I also found a site that refereed to using an iframe to do the job. I'm not really sure if that's the best way to go about doing this or not so I'm asking you the professionals of stackoverflow for help to try and resolve this issue. I will be more than happy to post any spinets you need from my code to help me expedite a solution for this. <table border="0"> <tr> <td>File 1:&nbsp;</td> <td><div class="fileinputs"><input type="file" class="file" size="37" id="f1" runat="server" /></div></td> </tr> <tr> <td>File 2:&nbsp;</td> <td><div class="fileinputs"><input type="file" class="file" size="37" id="f2" runat="server" /></div></td> </tr> <tr> <td colspan="2" style="text-align:right;"><asp:ImageButton ID="ImageButton1" runat="server" ImageUrl="~/Images/Buttons/Upload_Files.gif" OnClick="Submit_Form" /></td> </tr> </table> <asp:Label ID="lblError" runat="server" Text=""></asp:Label> <script type="text/javascript"> var fakeFileUpload = document.createElement('div'); fakeFileUpload.className = 'fakefile'; var fakeInput = document.createElement('input'); fakeInput.style.width = '200px'; fakeFileUpload.appendChild(fakeInput); var image = document.createElement('img'); image.src='../Images/Buttons/Browse.gif'; fakeFileUpload.appendChild(image); var x = document.getElementsByTagName('input'); for (var i=0;i<x.length;i++) { if (x[i].type != 'file') continue; if (x[i].parentNode.className != 'fileinputs') continue; x[i].className = 'file hidden'; var clone = fakeFileUpload.cloneNode(true); x[i].parentNode.appendChild(clone); x[i].relatedElement = clone.getElementsByTagName('input')[0]; x[i].onchange = x[i].onmouseout = function () { this.relatedElement.value = this.value; } } </script>

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  • mySQL to .XSL help

    - by kielie
    hi guys, I have to create a script that takes a mySQL table, and exports it into .XSL format, and then saves that file into a specified folder on the web host. I got it working, but now I can't seem to get it to automatically save the file to the location without prompting the user. It needs to run every day at a specified time, so it can save the previous days leads into a .XSL file on the web host. Here is the code: <?php // DB TABLE Exporter // // How to use: // // Place this file in a safe place, edit the info just below here // browse to the file, enjoy! // CHANGE THIS STUFF FOR WHAT YOU NEED TO DO $dbhost = "-"; $dbuser = "-"; $dbpass = "-"; $dbname = "-"; $dbtable = "-"; // END CHANGING STUFF $cdate = date("Y-m-d"); // get current date // first thing that we are going to do is make some functions for writing out // and excel file. These functions do some hex writing and to be honest I got // them from some where else but hey it works so I am not going to question it // just reuse // This one makes the beginning of the xls file function xlsBOF() { echo pack("ssssss", 0x809, 0x8, 0x0, 0x10, 0x0, 0x0); return; } // This one makes the end of the xls file function xlsEOF() { echo pack("ss", 0x0A, 0x00); return; } // this will write text in the cell you specify function xlsWriteLabel($Row, $Col, $Value ) { $L = strlen($Value); echo pack("ssssss", 0x204, 8 + $L, $Row, $Col, 0x0, $L); echo $Value; return; } // make the connection an DB query $dbc = mysql_connect( $dbhost , $dbuser , $dbpass ) or die( mysql_error() ); mysql_select_db( $dbname ); $q = "SELECT * FROM ".$dbtable." WHERE date ='$cdate'"; $qr = mysql_query( $q ) or die( mysql_error() ); // Ok now we are going to send some headers so that this // thing that we are going make comes out of browser // as an xls file. // header("Pragma: public"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Content-Type: application/force-download"); header("Content-Type: application/octet-stream"); header("Content-Type: application/download"); //this line is important its makes the file name header("Content-Disposition: attachment;filename=export_".$dbtable.".xls "); header("Content-Transfer-Encoding: binary "); // start the file xlsBOF(); // these will be used for keeping things in order. $col = 0; $row = 0; // This tells us that we are on the first row $first = true; while( $qrow = mysql_fetch_assoc( $qr ) ) { // Ok we are on the first row // lets make some headers of sorts if( $first ) { foreach( $qrow as $k => $v ) { // take the key and make label // make it uppper case and replace _ with ' ' xlsWriteLabel( $row, $col, strtoupper( ereg_replace( "_" , " " , $k ) ) ); $col++; } // prepare for the first real data row $col = 0; $row++; $first = false; } // go through the data foreach( $qrow as $k => $v ) { // write it out xlsWriteLabel( $row, $col, $v ); $col++; } // reset col and goto next row $col = 0; $row++; } xlsEOF(); exit(); ?> I tried using, fwrite to accomplish this, but it didn't seem to go very well, I removed the header information too, but nothing worked. Here is the original code, as I found it, any help would be greatly appreciated. :-) Thanx in advance. :-)

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  • What does a WinForm application need to be designed for usability, and be robust, clean, and profess

    - by msorens
    One of the principal problems impeding productivity in software implementation is the classic conundrum of “reinventing the wheel”. Of late I am a .NET developer and even the wonderful wizardry of .NET and Visual Studio covers only a portion of this challenging issue. Below I present my initial thoughts both on what is available and what should be available from .NET on a WinForm, focusing on good usability. That is, aspects of an application exposed to the user and making the user experience easier and/or better. (I do include a couple items not visible to the user because I feel strongly about them, such as diagnostics.) I invite you to contribute to these lists. LIST A: Components provided by .NET These are substantially complete components provided by .NET, i.e. those requiring at most trivial coding to use. “About” dialog -- add it with a couple clicks then customize. Persist settings across invocations -- .NET has the support; just use a few lines of code to glue them together. Migrate settings with a new version -- a powerful one, available with one line of code. Tooltips (and infotips) -- .NET includes just plain text tooltips; third-party libraries provide richer ones. Diagnostic support -- TraceSources, TraceListeners, and more are built-in. Internationalization -- support for tailoring your app to languages other than your own. LIST B: Components not provided by .NET These are not supplied at all by .NET or supplied only as rudimentary elements requiring substantial work to be realized. Splash screen -- a small window present during program startup with your logo, loading messages, etc. Tip of the day -- a mini-tutorial presented one bit at a time each time the user starts your app. Check for available updates -- facility to query a server to see if the user is running the latest version of your app, then provide a simple way to upgrade if a new version is found. Maximize to multiple monitors -- the canonical window allows you to maximize to a single monitor only; in my apps I allow maximizing across multiple monitors with a click. Taskbar notifier -- flash the taskbar when your backgrounded app has new info for the user. Options dialogs -- multi-page dialogs letting the user customize the app settings to his/her own preferences. Progress indicator -- for long running operations give the user feedback on how far there is left to go. Memory gauge -- an indicator (either absolute or percentage) of how much memory is used by your app. LIST C: Stylistic and/or tiny bits of functionality This list includes bits of functionality that are too tiny to merit being called a component, along with stylistic concerns (that admittedly do overlap with the Windows User Experience Interaction Guidelines). Design a form for resizing -- unless you are restricting your form to be a fixed size, use anchors and docking so that it does what is reasonable when enlarged or shrunk by the user. Set tab order on a form -- repeated tab presses by the user should advance from field to field in a logical order rather than the default order in which you added fields. Adjust controls to be aware of operating modes -- When starting a background operation with, for example, a “Go” button, disable that “Go” button until the operation completes. Provide access keys for all menu items (per UXGuide). Provide shortcut keys for commonly used menu items (per UXGuide). Set up some (global or important or common) shortcut keys without associating to menu items. Allow some menu items to be invoked with or without modifier keys (shift, control, alt) where the modifier key is useful to vary the operation slightly. Hook up Escape and Enter on child forms to do what is reasonable. Decorate any library classes with documentation-comments and attributes -- this allows Visual Studio to leverage them for Intellisense and property descriptions. Spell check your code! What else would you include?

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  • How can I determine if an image has loaded, using Javascript/jQuery?

    - by Kip
    I'm writing some Javascript to resize the large image to fit into the user's browser window. (I don't control the size of the source images unfortunately.) So something like this would be in the HTML: <img id="photo" src="a_really_big_file.jpg" alt="this is some alt text" title="this is some title text" /> Is there a way for me to determine if the src image in an img tag has been downloaded? I need this because I'm running into a problem if $(document).ready() is executed before the browser has loaded the image. $("#photo").width() and $("#photo").height() will return the size of the placeholder (the alt text). In my case this is something like 134 x 20. Right now I'm just checking if the photo's height is less than 150, and assuming that if so it is just alt text. But this is quite a hack, and it would break if a photo is less than 150 pixels tall (not likely in my particular case), or if the alt text is more than 150 pixels tall (could possibly happen on a small browser window). Edit: For anyone wanting to see the code: $(function() { var REAL_WIDTH = $("#photo").width(); var REAL_HEIGHT = $("#photo").height(); $(window).resize(adjust_photo_size); adjust_photo_size(); function adjust_photo_size() { if(REAL_HEIGHT < 150) { REAL_WIDTH = $("#photo").width(); REAL_HEIGHT = $("#photo").height(); if(REAL_HEIGHT < 150) { //image not loaded.. try again in a quarter-second setTimeout(adjust_photo_size, 250); return; } } var new_width = . . . ; var new_height = . . . ; $("#photo").width(Math.round(new_width)); $("#photo").height(Math.round(new_height)); } }); Update: Thanks for the suggestions. There is a risk of the event not being fired if I set a callback for the $("#photo").load event, so I have defined an onLoad event directly on the image tag. For the record, here is the code I ended up going with: <img id="photo" onload="photoLoaded();" src="a_really_big_file.jpg" alt="this is some alt text" title="this is some title text" /> Then in Javascript: //This must be outside $() because it may get called first var isPhotoLoaded = false; function photoLoaded() { isPhotoLoaded = true; } $(function() { //Hides scrollbars, so we can resize properly. Set with JS instead of // CSS so that page doesn't break with JS disabled. $("body").css("overflow", "hidden"); var REAL_WIDTH = -1; var REAL_HEIGHT = -1; $(window).resize(adjust_photo_size); adjust_photo_size(); function adjust_photo_size() { if(!isPhotoLoaded) { //image not loaded.. try again in a quarter-second setTimeout(adjust_photo_size, 250); return; } else if(REAL_WIDTH < 0) { //first time in this function since photo loaded REAL_WIDTH = $("#photo").width(); REAL_HEIGHT = $("#photo").height(); } var new_width = . . . ; var new_height = . . . ; $("#photo").width(Math.round(new_width)); $("#photo").height(Math.round(new_height)); } });

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  • Problem with sending out variable to serial port using api JAVA

    - by sjaakensjon
    We are developing a java program for school. But we are experiencing problems with sending out a variable created by 3 sliders. The idea is that we have 3 sliders. One slider for every color. Red green and blue. The variable has to have a value between 0 and 255. Everytime the value of the slider changes is has to send a variable for the channel, that value is 1, 2 ,3. And after that it has to send the value of the slider through the serial port. Could you please help us out by creating an example program? Below is our code so far. Thanks in advance. Sjaak package main; import javax.swing.*; import javax.swing.event.*; import java.awt.*; import app.Com; import app.Parameters; public class menu{ JSlider sliderblauw; JLabel hoeveelblauw; JLabel blauw; JLabel rood; JSlider sliderrood; JLabel hoeveelrood; JLabel groen; JLabel hoeveelgroen; JSlider slidergroen; public menu(){ Frame venster = new JFrame("Color control"); JPanel blauwinstel = new JPanel(); ((JFrame) venster).setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); venster.setSize(500, 500); venster.setVisible(true); sliderblauw = new JSlider(JSlider.VERTICAL, 0, 255, 0); sliderblauw.addChangeListener(new veranderingblauw()); hoeveelblauw = new JLabel ("0"); blauwinstel.add(sliderblauw); blauwinstel.add(hoeveelblauw); venster.add(blauwinstel, BorderLayout.WEST); sliderblauw.setMajorTickSpacing(10); sliderblauw.setPaintTicks(true); JPanel roodinstel = new JPanel(); sliderrood = new JSlider(JSlider.VERTICAL, 0, 255, 0); sliderrood.addChangeListener(new veranderingrood()); hoeveelrood = new JLabel ("0"); roodinstel.add(sliderrood); roodinstel.add(hoeveelrood); venster.add(roodinstel, BorderLayout.EAST); sliderrood.setMajorTickSpacing(10); sliderrood.setPaintTicks(true); JPanel groeninstel = new JPanel(); slidergroen = new JSlider(JSlider.VERTICAL, 0, 255, 0); slidergroen.addChangeListener(new veranderinggroen()); hoeveelgroen = new JLabel ("0"); groeninstel.add(slidergroen); groeninstel.add(hoeveelgroen); venster.add(groeninstel, BorderLayout.CENTER); slidergroen.setMajorTickSpacing(10); slidergroen.setPaintTicks(true); } public class veranderingblauw implements ChangeListener{ public void stateChanged(ChangeEvent ce){ int value = sliderblauw.getValue(); String waarde_blauw = Integer.toString(value); hoeveelblauw.setText(waarde_blauw); }} public class veranderingrood implements ChangeListener{ public void stateChanged(ChangeEvent ce){ int value = sliderrood.getValue(); String waarde_rood = Integer.toString(value); hoeveelrood.setText(waarde_rood); }} public class veranderinggroen implements ChangeListener{ public void stateChanged(ChangeEvent ce){ int value = slidergroen.getValue(); String waarde_groen = Integer.toString(value); hoeveelgroen.setText(waarde_groen); }} public static void main( String[] args) { new menu(); } }

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