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  • Adding/removing session variables on Page OnInit/OnLoad in C#

    - by MKS
    Hi Guys, I am using C#. I am having below code in C#: protected override void OnInit(EventArgs e) { try { if (Session["boolSignOn"].ToString() == "true".ToString()) { lblPanelOpen.Text = Session["panelOpen"].ToString(); } else { lblPanelOpen.Text = Session["panelOpen"].ToString(); } } catch (Exception ex) { Logger.Error("Error processing request:" + ex.Message); } } protected override void OnLoad(EventArgs e) { try { if (!string.IsNullOrEmpty(Session["panelOpen"].ToString())) { lblPanelOpen.Text = string.Empty; Session.Remove("panelOpen"); } } catch (Exception ex) { Logger.Error("Unable to remove the session variable:" + ex.Message); } } In above code I am having a Session["panelOpen"] variable which is created from another user control and once my page is trying to render, I am storing Session["panelOpen"] in my hidden lblPanelOpen.Text on page OnInit() method, however when page is loaded completely then I am trying to remove the session variable. Please suggest!

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  • Fade between looped background images using jQuery

    - by da5id
    I'm trying to get the background image of a legacy div (by which I mean it already has a background image, which I cannot control & thus have to initially over-write) to smoothly fade between new images indefinitely. Here's what I have so far: var images = [ "/images/home/19041085158.jpg", "/images/home/19041085513.jpg", "/images/home/19041085612.jpg" ]; var counter = 0; setInterval(function() { $(".home_banner").css('backgroundImage', 'url("'+images[counter]+'")'); counter++; if (counter == images.length) { counter = 0; } }, 2000); Trouble is, it's not smooth (I'm aiming for something like the innerfade plugin). EDIT: question originally said "and it's not indefinite (it only runs once through the array).", but Mario corrected my stupid naming error. EDIT2: I'm now using Reigel's answer (see below), which works perfectly, but I still can't find any way to fade between the images smoothly. All help greatfully appreciated :)

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  • xerces serialization in Java 6

    - by Jim Garrison
    In Java 6, the entire xerces XML parser/serializer implementation is now in the Java runtime (rt.jar). The packages have been moved under the com.sun.* namespace, which places them off-limits for explicit reference within client code. This is not a problem when using the parser, which is instantiated via javax API-defined factories. However, our code also uses xerces serialization (org.apache.xml.serialize.* ). AFAICT, there are no javax.xml API-defined factories for creating instances of Serializer and OutputFormat. This seems to imply that the only way to get one is to explicitly call the com.sun.org.apache.xml.serialize.* APIs. I've found the serialization classes in javax.xml.stream, but they don't seem to provide any output-formatting control like the xerces OutputFormat class. Question: Is there a way to access the xerces serialization functionality (which is in rt.jar) via a javax standard API, without including xerces.jar and also without explicitly instantiating com.sun.* classes? If not, is there an javax API-compliant way to achieve the same effect?

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  • Why does my custom component raise AVs in the IDE?

    - by Mason Wheeler
    I'm trying to write a simple component that will allow you to embed one or more SDL rendering surfaces on a Delphi window, using the SDL 1.3 APIs. It will compile and install just fine, but when I try to use the component in the form designer, it raises AVs whenever I try to access its properties in the object inspector, save the form, or delete the component, and placing one on a form then trying to run gives a linker error: it apparently can't read the DFM properly for whatever reason. The DLL can be found at http://www.libsdl.org/tmp/SDL-1.3-dll.zip and the source code to my component can be downloaded here. SDL.pas is a JEDI-SDL header file; the rest is my own code. I don't see any reason for this to raise AVs in the form designer. If I dynamically create the control at runtime I don't have any stability issues. Can anyone take a look at this and maybe provide some feedback that might help me clear it up?

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  • Artificial Intelligence in online game using Google App Engine

    - by Hortinstein
    I am currently in the planning stages of a game for google app engine, but cannot wrap my head around how I am going to handle AI. I intend to have persistant NPCs that will move about the map, but short of writing a program that generates the same XML requests I use to control player actions, than run it on another server I am stuck on how to do it. I have looked at the Task Queue feature, but due to long running processes not being an option on the App engine, I am a little stuck. I intend to run multiple server instances with 200+ persistant NPC entities that I will need to update. Most action is slowly roaming around based on player movements/concentrations, and attacking close range players...(you can probably guess the type of game im developing)

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  • Best Ergonomic trackball (finger-operated, with scroll wheel) for programmer

    - by Clay Nichols
    We programmers are at great risk of RSI. After 10 years, I was having shoulder problems and switched to a trackball, which helped, then switched to my left hand which helped even more. I'm looking for a good finger-operated trackball with a scroll wheel. (I do not like the ones where you control the ball w/ your thumb. My thumb isn't as dexterous). I also want to have a scroll wheel. I currently use a Logitech Marble Mouse but the scrolling implementation is very poor. EDIT: I just tried the Marble Scroll (free software that provides better scrolling. Works great. Another option is the KatMouse addon (which I've not tried) for trackballs. I hear the old Logitech Trackman was very good, but is no longer available. Anyone have experience with the Marble Mouse (and the above fixes) ? Or any suggestions of a good trackball.

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  • How to trigger a postback using JQuery Droppable plugin ?

    - by Sandeep K Ram
    Hi, This is my script for the draggable and droppable <script type="text/javascript"> $(function() { $(".Source li").draggable({ appendTo: "body", helper: "clone", revert: "invalid" }); $(".Destination ").droppable({ activeClass: "ui-state-default", hoverClass: "ui-state-hover", accept: ".Source li", drop: function(event, ui) { $(this).find(".placeholder").remove(); $("#Hf1").val(ui.draggable.text()); $("#TxtItemId").val($("#Hf1").val()); } }); }); </script> Now I want to access the value of the "TxtItemId" control in the code-behind through a postback. How do I go about doing this ? BTW, this is for a scenario where a person will drag an item from a panel into a shopping cart and I need to capture the Id of the dropped item and trigger a postback after the drop to update the quantity of that item in the cart.

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  • how to register a selectionProvider for the Viewer from a superclass

    - by Tom
    I have a View which extends a View provided by another plugin like this; public class View2 extends some.other.package.View1 { public void createPartControl(Composite parent) { super.createPartControl(parent); //I want to do this, but I can't because its private //getSite().setSelectionProvider(treeViewer); } } But I can't edit the super class, so I need to access the viewer from the Control. public class some.other.package.View1 extends ViewPart { private TreeViewer treeViewer; public void createPartControl(Composite parent) { treeViewer = new TreeViewer(parent, SWT.V_SCROLL); } } I tried using parent.getChildren(); to get a Tree object, but I can't see that it can be cooerced into an ISElectionProvider as required

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  • VB.NET 2.0 - StackOverflowException when using Thread Safe calls to Windows Forms Controls

    - by LamdaComplex
    I have a Windows Forms app that, unfortunately, must make calls to controls from a second thread. I've been using the thread-safe pattern described on the http://msdn.microsoft.com/en-us/library/ms171728.aspx. Which has worked great in the past. The specific problem I am having now: I have a WebBrowser control and I'm attempting to invoke the WebBrowser.Navigate() method using this Thread-Safe pattern and as a result I am getting StackOverflow exceptions. Here is the Thread-Safe Navigate method I've written. Private Delegate Sub NavigateControlCallback(ByRef wb As WebBrowser, ByVal url As String) Private Sub AsyncNavigate(ByRef wb As WebBrowser, ByVal URL As String) Try If wb.InvokeRequired Then Dim callback As New NavigateControlCallback(AddressOf AsyncNavigate) callback(wb, url) Else wb.Navigate(url) End If Catch ex As Exception End Try End Sub Is there a Thread-Safe way to interact with WinForms components without the side effect of these StackOverflowExceptions?

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  • Synchronizing reading and writing with synchronous NamedPipes

    - by Mike Trader
    A Named Pipe Server is created with hPipe = CreateNamedPipe( zPipePath, PIPE_ACCESS_DUPLEX, PIPE_TYPE_BYTE | PIPE_WAIT | PIPE_READMODE_BYTE, PIPE_UNLIMITED_INSTANCES, 8192, 8192, NMPWAIT_USE_DEFAULT_WAIT, NULL) Then we immediately call: ConnectNamedPipe( hPipe, BYVAL %NULL ) Which blocks until the client connects. Then we proceed directly to ReadFile( hPipe, ... The problem is that it takes the Client takes a finite amount of time to prepare and write all the fcgi request parameters. This has usually not completed before the Pipe Server performs its ReadFile(). The Read file operation thus finds no data in the pipe and the process fails. Is there a mechanism to tell when a Write() has occurred/finished after a client has connected to a NamedPipe? If I had control of the Client process, I could use a common Mutex, but I don't, and I really do not want to get into I/O completion ports just to solve this problem! I can of course use a simple timer to wait 60m/s or so which is usually plenty of time for the wrote to complete, but that is a horrible hack.

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  • netbeans custom jax-ws stubs..

    - by Sam
    Hi, I am using netbeans 6.9. I have made a JAX-WS service that returns a complex type, I have also made a JAX-WS client to consume it. The JAX-WS system automaticly creates a class for the client, inferred from the WSDl spec. I want to make my own class for this using JAXB annotations, so that I can add some extra functions to it. How do I go about replacing the autogenerated file with my own one? Could I also use the same class in the service to control how it is transmitted? Thanks!

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  • Custom Validator with an OR Condition

    - by zSysop
    Hi all, Right now i have an asp.net 2.0 app which allows a user to search by the following fields Location (Required if there is nothing in idnumber field) Address (Required if there is nothing in idnumber field) Zip (Required if there is nothing in idnumber field) **OR** IDNumber. (Required if there is nothing in any of the other fields) What i'd like to be able to do is validate this client side on button click and display a summary of errors. i.e. if a user leaves every criteria blank. I'd like to display "You must enter a IDNumber or "Location, Address, and Zip to continue" I've never used the Custom Validation control so here are some questions. 1) Is it able to do this? 2) Does anyone have an example of how to do this? Thanks

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  • Dynamically showing fields to a Dev Express Grid view on windows form

    - by Bhaskar
    In one of windows application in C# , I am using Dev Express Grid view control to bind some data and display it to user. I have custom business objects with properties defined for this purpose.Then I simple set the DataSource of the grid to the list of my custom business objects. A while ago , there came a requirement which means that the columns to be displayed on to the grid will be dynamic. This means I cannot know at design time which fields I will need to display. I was thinking of abandoning setting the DataSource and populating the grid manually by code. But I think this will cause many of the grid's features not to work properly, for example , grouping the data by drag n drop of fields to the header area etc. Is there any way to tell a grid at runtime to skip certain fields from a list of BO's when databinding to the grid ?

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  • Calculate cubic bezier T value where tangent is perpendicular to anchor line.

    - by drawnonward
    Project a cubic bezier p1,p2,p3,p4 onto the line p1,p4. When p2 or p3 does not project onto the line segment between p1 and p4, the curve will bulge out from the anchor points. Is there a way to calculate the T value where the tangent of the curve is perpendicular to the anchor line? This could also be stated as finding the T values where the projected curve is farthest from the center of the line segment p1,p4. When p2 and p3 project onto the line segment, then the solutions are 0 and 1 respectively. Is there an equation for solving the more interesting case? The T value seems to depend only on the distance of the mapped control points from the anchor line segment. I can determine the value by refining guesses, but I am hoping there is a better way.

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  • the name 'controlname' does not exist in the current context

    - by zohair
    Hi, I have a web application that I'm working on(ASP.NET2.0 with C#)[Using VS2005]. Everything was working fine, and all of a sudden I get the error: Error 1 The name 'Label1' does not exist in the current context and 43 others of the sort for each time that I used a control in my codebehind of the page. This is only happening for 1 page. And it's as if the codebehind isn't recognizing the controls. Another interesting thing is that the intellisense isn't picking up any of the controls either.. I have tried to clean the solution file, delete the obj file, exclude the files from the project then re-add them, close VS and restart it, and even restart my computer, but none of these have worked. Please Help. Thank you

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  • (C#) graphics.drawImage has a size limit? How to deal with it?

    - by DGH
    I am attempting to display a very large graphical representation of some data. I am using a bitmap for persistent storage of the image and e.Graphics.DrawImage(myBitmap, new Point(0,0)) in the onPaint of a PictureBox control on my form. I have noticed (and heard mentioned on other sites) that if my image has a height or width greater than 2^15, I get a Parameter not Valid exception, but I have not found any official documentation of this limit. Is this 2^15 image size limit a definite, official part of Graphics.DrawImage? Are there any simple workarounds to render my entire image onto the form? (Yes, the pictureBox is set to the same size as the image, or bigger. Side question though, should I just be using the onPaint of the form itself instead of a picture box?)

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  • Alert on moving to a different page of a grid when user changes contents of textboxes in a Grid

    - by Ashish Gupta
    In a ASP.NET application I have a paging RadGrid which shows up textbox in each row. Outside the grid, there is an OK button to save the content of all the textbox. If user changes text in any one or more of the textbox and without clicking on the "OK" button, tries to move to a different page number (of the grid by clicking on the page number), he should be prompted for confirmation of save or cancel the changes. I am guessing that one can write a Javascript function which would look for any form input control (textbox in my case) and detect changes and If there are changes, would prompt the user. However, I am not sure where I can call this function from? Any suggestion on this or a better way to achieve this would be appreciated. I am using RadGrid but I guess this should be applicable to GridView as well.

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  • simile exhibit ie7 bug

    - by two7s_clash
    'm using to Exhibit to, pretty simply, display some data on historical events and book publication dates: http://f1shw1ck.com/timeline3/exhibit.html Everything works fine, and I have been able to get the timeline running as wanted, until I try to take control of the timeline with a timelineConfig script. After I add this, my timeline continues to work as expected on all browsers, except for IE. Curiously enough, band 0 initializes and is rendered correctly, but band 1 shows no events and does not sync to the band above. But it is picking up the width: 10%", intervalUnit: Timeline.DateTime.DECADE, intervalPixels: 60 specifications, as they are rendered correctly. Since everything works until I call ex:configuration="timelineConfig", since everything works in the other browsers, and since everything almost works in IE, up to the event painting, I have to imagine this is a javascript coding error on my part, but I just can't see it. All I get in my console is Failed to create view View As Timeline." Incidentally, having or not having the gotoYear function seemingly does nothing to change... Thanks for any tips.

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  • .NET chart Datamanipulator

    - by peter
    In .NET C#4.0 with the .NET Chart control I have this code to generate a pie chart: chart.Series[0].ChartType = SeriesChartType.Pie; foreach (Order order in orderCollection) { // If I set point.LegendText = order.UserName, .Group will erase it chart.Series[0].Points.AddXY(order.UserName, order.Total); } chart.DataManipulator.Sort(PointSortOrder.Ascending, "X", "Series1"); chart.DataManipulator.Group("SUM", 1, IntervalType.Months, "Series1"); This works well, it generates a pie chart with the top 10 users showing their total order sum. I would like to set the DataPoints' legendtext to the order.UserName property. The problem is, DataManipulator.Group overwrites the series DataPoints. So if I set the legendtext in the foreach loop, they will be erased after the Group call. And after the Group call, I don't see a way to retrieve the correct UserName for a DataPoint to set the legendtext. What is the best approach for this situation?

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  • How to generate one large dependency map for the whole project that builds with makefiles?

    - by Stan
    I have a gigantic project that is built using makefiles. Running make at the root of the project takes over 20 minutes when no files have changed (i.e. just traversing the project and checking for updated files). I'd like to create a dependency map that will tell me which directories I need to run 'make' in based on the file(s) changed. I already have a list of updated files that I can get from my version control system, and I'd like to skip the 20 minutes of traversing and get straight to the locations that do need to be recompiled. The project has a mix of several languages and custom tools, so this would ideally be language-independent (i.e. it would only process all makefiles to generate dependencies). I'll settle for a C/C++-specific solution, too, as the majority of the project is in C++. The project is built on Linux.

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  • Adding HTML to the DOM through the client.

    - by Mantorok
    Hi all Just wanted your views on the most efficient way to render content on demand, the reason this has come to light is that I'm maintaining a AA compliant website and we recently added video to it, and one of the techniques to avoid invalidation was to add the HTML for the video to the DOM after the page has loaded - which is fine and working ok. However, I found 2 possible techniques and I would appreciate some views, the one I'm currently using is an AJAX call that returns the HTML, the other technique is a hidden field that contains the HTML - I'm presently using the former. The main reason I'm asking the question is because there may be times when this particular control is also requested via an AJAX call, so I would end up with back-to-back AJAX calls, which seems a bit inefficient to me. I hope this makes sense, are there any better techniques to achieve this? Am I worrying too much over the consecutive AJAX calls? Thanks

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  • Servlet Session - switch from URL Rewriting to Cookie

    - by lajuette
    Situation: I have a "dumb" Javascript frontend that can contact some kind of SSO middleware (MW). The MW can obtain sessions by issuing requests that contain authentication credentials (username, password). I.e. the session will be created for a certain user. My frontend needs to "restart" the session to gain the user's permissions to the target system. For that i need a valid session cookie. The target system is not under my control (could be a more or less public WFS, WMS, etc.), so i cannot add any SSO mechanism to it. Question: Is it possible to "steal" a Session forging a request which URL contains a valid session ID in the jsessionid parameter? Goal : Issue such a request to a Servlet and make it respond with a Set-Cookie header that contains the same id. That way the frontend joins the session and may do whatever the user, which was used to create the session, is able to do.

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  • Is it a good idea to "migrate business logic code into our domain model"?

    - by Bytecode Ninja
    I am reading Hibernate in Action and the author suggests to move business logic into our domain models (p. 306). For instance, in the example presented by the book, we have three entities named Item, Bid, and User and the author suggests to add a placeBid(User bidder, BigDecimal amount) method to the Item class. Considering that usually we have a distinct layer for business logic (e.g. Manager or Service classes in Spring) that among other things control transactions, etc. is this really a good advice? Isn't it better not to add business logic methods to our entities? Thanks in advance.

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  • Logging a specific package in log4j programmatically

    - by VinTem
    Hi there, here is the thing, I have to deploy a web app and the the log4j.properties file is created by the client so I dont have control over it. Their properties file is like this: log4j.rootCategory= FILE !-----------FILE--------------! log4j.category.FILE=DEBUG log4j.appender.FILE=org.apache.log4j.RollingFileAppender log4j.appender.FILE.File=${catalina.base}/logs/rcweb.log log4j.appender.FILE.MaxFileSize=1024KB log4j.appender.FILE.MaxBackupIndex=10 log4j.appender.FILE.layout=org.apache.log4j.PatternLayout log4j.appender.FILE.layout.ConversionPattern=%-2d{dd/MM/yyyy HH:mm:ss} [%t] %5p %c:%L - %m%n And in my classes I do something like this: private static final Logger LOG = Logger.getLogger(MaterialController.class); LOG.info("my log"); But the log file has never been created. I did the test and changed the log4j.properties file and deployed in my computer adding the following line: log4j.logger.br.com.golive.requisicaoCompras=DEBUG This works, but I cant use the file like this. Is there any ideas? Thanks

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  • Binding command to button in silverlight 4 using mvvm

    - by Archie
    Hello, I have a user control called HomePage.xaml. I'm creating a model instance (using MVVM pattern) in the code behind file in the constructor of page as MainViewModel model = new MainViewModel(); I have a button in HomePage.xaml which I want to bind to the command inside MainViewModel called GetData() and want to populate the data in datagrid. MainViewModel has an ObservableCollection which I would use to bind the data in datagrid. Populating the data in datagrid without binding command works fine. I'm binding the button as: <StackPanel x:Name="stkPanelInput" Orientation="Horizontal" VerticalAlignment="Center" HorizontalAlignment="Center"> <Button x:Name="buttonGetData" Width="70" Content="GetData" Command="{Binding GetData}" Click="buttonGetData_Click"/> </StackPanel> How shall I bind the command using MVVM? Thanks.

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