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  • Get specifc value from JSon string using JSon.Net

    - by dean nolan
    I am trying to get a value from a JSon formatted string. It was to get album info from a website called Freebase. My result is like this: { "a0": { "code": "/api/status/error", "messages": [ { "code": "/api/status/error/mql/result", "info": { "count": 20, "result": [ { "album": [ { "name": "Definitely Maybe", "release_date": "1994-08-30" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Most Wanted Rock 1", "release_date": null } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Alternative 90s", "release_date": null } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Live Forever: Best of Britpop", "release_date": "2003-03-03" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "The Best... In the World... Ever! Volume 5", "release_date": "1997-03-31" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Live 4 Ever", "release_date": "1998-06-29" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "De Afrekening, Volume 8", "release_date": "1994" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Now That's What I Call Music! 33", "release_date": null } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Q: Anthems", "release_date": null } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "The Best Anthems... Ever! Volume 2", "release_date": null } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "1995 Mercury Music Prize: Ten Albums of the Year", "release_date": null } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Now That's What I Call Music! 1994", "release_date": null } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Indie Top 20, Volume 21", "release_date": "1995" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Dad Rocks!", "release_date": "2006-06-05" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Untitled", "release_date": null } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "The Greatest Hits of 1994", "release_date": "1994-10" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Top of the Pops 2", "release_date": "2000-03-27" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Q: Anthems (disc 1)", "release_date": null } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Jamie Oliver's Cookin'", "release_date": "2001" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" }, { "album": [ { "name": "Killer Buzz", "release_date": "2001" } ], "artist": "Oasis", "name": "Live Forever", "type": "/music/track" } ] }, "message": "Unique query may have at most one result. Got 20", "path": "", "query": { "album": [ { "name": null, "release_date": null, "sort": "release_date" } ], "artist": "Oasis", "error_inside": ".", "name": "Live Forever", "type": "/music/track" } } ] }, "code": "/api/status/ok", "status": "200 OK", "transaction_id": "cache;cache04.p01.sjc1:8101;2010-03-30T18:04:20Z;0035" } I am looking to get the first album title, Definitely Maybe, from this list. I have tried parsing the string like this: JObject o = JObject.Parse(jsonString); string album = (string)o[""]; But no matter what I have tried I don't know what to put in those quotes. How would I get this specific value or be able to search for it? Thanks

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  • Element was not expected While Deserializing an Array with XML Serialization

    - by Anthony Shaw
    OK. I'm trying to work on communicating with the Pivotal Tracker API, which only returns data in an XML format. I have the following XML that I'm trying to deserialize into my domain model. <?xml version="1.0" encoding="UTF-8"? <stories type="array" count="2" total="2" <story <id type="integer"2909137</id <project_id type="integer"68153</project_id <story_typebug</story_type <urlhttp://www.pivotaltracker.com/story/show/2909137</url <current_stateunscheduled</current_state <description</description <nameTest #2</name <requested_byAnthony Shaw</requested_by <created_at type="datetime"2010/03/23 20:05:58 EDT</created_at <updated_at type="datetime"2010/03/23 20:05:58 EDT</updated_at </story <story <id type="integer"2909135</id <project_id type="integer"68153</project_id <story_typefeature</story_type <urlhttp://www.pivotaltracker.com/story/show/2909135</url <estimate type="integer"-1</estimate <current_stateunscheduled</current_state <description</description <nameTest #1</name <requested_byAnthony Shaw</requested_by <created_at type="datetime"2010/03/23 20:05:53 EDT</created_at <updated_at type="datetime"2010/03/23 20:05:53 EDT</updated_at </story </stories My 'story' object is created as follows: public class story { public int id { get; set; } public int estimate { get; set; } public int project_id { get; set; } public string story_type { get; set; } public string url { get; set; } public string current_state { get; set; } public string description { get; set; } public string name { get; set; } public string requested_by { get; set; } public string labels { get; set; } public string lighthouse_id { get; set; } public string lighthouse_url { get; set; } public string owned_by { get; set; } public string accepted_at { get; set; } public string created_at { get; set; } public attachment[] attachments { get; set; } public note[] notes { get; set; } } When I execute my deserialization code, I receive the following exception: Exception: There is an error in XML document (2, 2). Inner Exception: <stories xmlns='' was not expected. I can deserialize the individual stories just fine, I just cannot deserialize this xml into an array of 'story' objects And my deserialization code (value is a string of the xml) var byteArray = Encoding.ASCII.GetBytes(value); var stream = new MemoryStream(byteArray); var deserializedObject = new XmlSerializer(typeof (story[])).Deserialize(stream) Does anybody have any ideas?

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  • List of freely available programming books

    - by Karan Bhangui
    I'm trying to amass a list of programming books with opensource licenses, like Creative Commons, GPL, etc. The books can be about a particular programming language or about computers in general. Hoping you guys could help: Languages BASH Advanced Bash-Scripting Guide (An in-depth exploration of the art of shell scripting) C The C book C++ Thinking in C++ C++ Annotations How to Think Like a Computer Scientist C# .NET Book Zero: What the C or C++ Programmer Needs to Know About C# and the .NET Framework Illustrated C# 2008 (Dead Link) Data Structures and Algorithms with Object-Oriented Design Patterns in C# Threading in C# Common Lisp Practical Common Lisp On Lisp Java Thinking in Java How to Think Like a Computer Scientist Java Thin-Client Programming JavaScript Eloquent JavaScript Haskell Real world Haskell Learn You a Haskell for Great Good! Objective-C The Objective-C Programming Language Perl Extreme Perl (license not specified - home page is saying "freely available") The Mason Book (Open Publication License) Practical mod_perl (CreativeCommons Attribution Share-Alike License) Higher-Order Perl Learning Perl the Hard Way PHP Practical PHP Programming Zend Framework: Survive the Deep End PowerShell Mastering PowerShell Prolog Building Expert Systems in Prolog Adventure in Prolog Prolog Programming A First Course Logic, Programming and Prolog (2ed) Introduction to Prolog for Mathematicians Learn Prolog Now! Natural Language Processing Techniques in Prolog Python Dive Into Python Dive Into Python 3 How to Think Like a Computer Scientist A Byte of Python Python for Fun Invent Your Own Computer Games With Python Ruby Why's (Poignant) Guide to Ruby Programming Ruby - The Pragmatic Programmer's Guide Mr. Neighborly's Humble Little Ruby Book SQL Practical PostgreSQL x86 assembly Paul Carter's tutorial Lua Programming In Lua (for v5 but still largely relevant) Algorithms and Data Structures Algorithms Data Structures and Algorithms with Object-Oriented Design Patterns in Java Planning Algorithms Frameworks/Projects The Django Book The Pylons Book Introduction to Design Patterns in C++ with Qt 4 (Open Publication License) Version control The SVN Book Mercurial: The Definitive Guide Pro Git UNIX / Linux The Art of Unix Programming Linux Device Drivers, Third Edition Others Structure and Interpretation of Computer Programs The Little Book of Semaphores Mathematical Logic - an Introduction An Introduction to the Theory of Computation Developers Developers Developers Developers Linkers and loaders Beej's Guide to Network Programming Maven: The Definitive Guide I will expand on this list as I get comments or when I think of more :D Related: Programming texts and reference material for my Kindle What are some good free programming books? Can anyone recommend a free software engineering book? Edit: Oh I didn't notice the community wiki feature. Feel free to edit your suggestions right in!

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  • How can I force a tree itemrenderer to redraw during a drag and drop operation?

    - by swidnikk
    I have a tree control with a custom item renderer. The item renderer has different states that should be set while an item is being dragged over the item renderer. I understand from reading this post http://forums.adobe.com/message/2091088 that the 'right way' to do this is to override the 'getCurrentState' method and append some text. I do that. Now in my tree control I handle the drag over event and get a reference to the itemrenderer that is being dragged over and I set the boolean 'dragOver' property to true. Now I just need to force my itemRenderer to redraw. I can't figure that out. A workaround, is to just set the currentState of the itemRenderer. My question then, how can I force my itemRenderer to refresh? (and I've tried calling validateNow, invalideDisplayList/Properties/Size, to no avail) <?xml version="1.0" encoding="utf-8"?> <s:MXTreeItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"> <fx:Script> <![CDATA[ import mx.events.DragEvent; import mx.events.FlexEvent; import spark.layouts.supportClasses.DropLocation; public var dragOver:Boolean = false; override protected function getCurrentRendererState():String { var skinState:String = super.getCurrentRendererState(); if( dragOver ) skinState += "AndDragOver"; trace('getCurrentRendererState', skinState); return skinState; } ]]> </fx:Script> <s:states> <s:State name="normal" /> <s:State name="hovered" /> <s:State name="selected" /> <s:State name="normalAndDragOver" stateGroups="dragOverGroup" /> <s:State name="hoveredAndDragOver" stateGroups="dragOverGroup" /> <s:State name="selectedAndDragOver" stateGroups="dragOverGroup" /> </s:states> ...

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  • Building the DropThings ASP.NET Solution

    - by Sephrial
    Hi all, I'm attempting to build a project called DropThings but I am getting all these errors and I'm not sure how to resolve them. Can anyone lend a helping hand? I'm wondering if anyone else can build the website and if so, what steps it took you. Thanks in advance! Source Code: http://code.google.com/p/dropthings/ My Configuration: Visual Studio 2008 SP1 SQL 2005 (with the database loaded + Web.Config file configured) Microsoft Silverlight Projects 2008 Errors: Error File Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found. ...\Dropthings-v2.2.0\src\DashboardBusiness Build failed due to validation errors in ...\Dropthings-v2.2.0\src\DashboardDataAccess\DropthingsDataContext.dbml. Open the file and resolve the issues in the Error List, then try rebuilding the project. ...\Dropthings-v2.2.0\src\DashboardDataAccess\DropthingsDataContext.dbml Metadata file '...\Dropthings-v2.2.0\src\DashboardBusiness\bin\Debug\Dropthings.Business.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Activities Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Activities Metadata file '...\Dropthings-v2.2.0\src\Dropthings.Business.Activities\bin\Debug\Dropthings.Business.Activities.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Workflows Metadata file '...\Dropthings-v2.2.0\src\DashboardBusiness\bin\Debug\Dropthings.Business.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Workflows Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Workflows Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found Dropthings.Widget.Framework Metadata file '...\Dropthings-v2.2.0\src\DashboardBusiness\bin\Debug\Dropthings.Business.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Facade Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found. ...\Dropthings-v2.2.0\src\Dropthings.Business.Facade Metadata file '...\Dropthings-v2.2.0\src\DashboardDataAccess\bin\Debug\Dropthings.DataAccess.dll' could not be found Dropthings.Web.Framework Metadata file '...\Dropthings-v2.2.0\src\Dropthings.Business.Workflows\bin\Debug\Dropthings.Business.Workflows.dll' could not be found Dropthings.Web.Framework Metadata file '...\Dropthings-v2.2.0\src\Dropthings.Business.Activities\bin\Debug\Dropthings.Business.Activities.dll' could not be found Dropthings.Web.Framework Metadata file '...\Dropthings-v2.2.0\src\Dropthings.Widget.Framework\bin\Debug\Dropthings.Widget.Framework.dll' could not be found Dropthings.Web.Framework Metadata file '...\Dropthings-v2.2.0\src\Dropthings.Business.Facade\bin\Debug\Dropthings.Business.Facade.dll' could not be found Dropthings.Web.Framework Metadata file '...\Dropthings-v2.2.0\src\DashboardBusiness\bin\Debug\Dropthings.Business.dll' could not be found Dropthings.Web.Framework The type or namespace name 'Framework' does not exist in the namespace 'Dropthings.Web' (are you missing an assembly reference?) ...\Dropthings-v2.2.0\src\Dropthings\web.config

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  • What are the reasons why the CPU usage doesn’t go 100% with C# and APM?

    - by Martin
    I have an application which is CPU intensive. When the data is processed on a single thread, the CPU usage goes to 100% for many minutes. So the performance of the application appears to be bound by the CPU. I have multithreaded the logic of the application, which result in an increase of the overall performance. However, the CPU usage hardly goes above 30%-50%. I would expect the CPU (and the many cores) to go to 100% since I process many set of data at the same time. Below is a simplified example of the logic I use to start the threads. When I run this example, the CPU goes to 100% (on an 8/16 cores machine). However, my application which uses the same pattern doesn’t. public class DataExecutionContext { public int Counter { get; set; } // Arrays of data } static void Main(string[] args) { // Load data from the database into the context var contexts = new List<DataExecutionContext>(100); for (int i = 0; i < 100; i++) { contexts.Add(new DataExecutionContext()); } // Data loaded. Start to process. var latch = new CountdownEvent(contexts.Count); var processData = new Action<DataExecutionContext>(c => { // The thread doesn't access data from a DB, file, // network, etc. It reads and write data in RAM only // (in its context). for (int i = 0; i < 100000000; i++) c.Counter++; }); foreach (var context in contexts) { processData.BeginInvoke(context, new AsyncCallback(ar => { latch.Signal(); }), null); } latch.Wait(); } I have reduced the number of locks to the strict minimum (only the latch is locking). The best way I found was to create a context in which a thread can read/write in memory. Contexts are not shared among other threads. The threads can’t access the database, files or network. In other words, I profiled my application and I didn’t find any bottleneck. Why the CPU usage of my application doesn’t go about 50%? Is it the pattern I use? Should I create my own thread instead of using the .Net thread pool? Is there any gotchas? Is there any tool that you could recommend me to find my issue? Thanks!

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  • WebClient error when using a thread in .NET

    - by Kiranu
    I'm having a very weird error using the WebClient class in .NET 4. The app simply downloads some files off the internet and provides output on a textbox (the GUI is WPF). The method that does this is the following: void DownloadFiles(object files) { fileL = (List<string>) files; foreach (string url in fileL) { byte[] data; using (System.Net.WebClient k = new WebClient()) { data = k.DownloadData(url); } //Bunch of irrelevant code goes here... } } (I added the using while trying to divine [yes I'm that desperate/ignorant] a solution, the problem happens even if the webclient is declared and initialized outside the foreach loop) Now the problem appears only when I'm executing this method on a thread separate from the WPF UI main thread. If it is executed on the UI thread then it works perfectly. When a new thread is created with: Thread t = new Thread(DownloadFiles); t.Start(files); The first time the code goes into the loop it will work, but when its the second pass inside the loop, I will always receive a TargetParameterCountException. I can't make any sense of this error. Any help is very much appreciated. EDIT Here are the Exception Details: Exception.Message = "Parameter count mismatch." Exception.InnerException = null Exception.Source = " mscorlib" The StackTrace follows: at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) at System.Delegate.DynamicInvokeImpl(Object[] args) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window window) at System.Windows.Application.Run() at FileDownloader.App.Main() in d:\mis documentos\visual studio 2010\Projects\OneMangaDownloader\FileDownloader\obj\x86\Debug\App.g.cs:line 0 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()

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  • System.Data.SQLite parameter issue

    - by CasperT
    I have the following code: try { //Create connection SQLiteConnection conn = DBConnection.OpenDB(); //Verify user input, normally you give dbType a size, but Text is an exception var uNavnParam = new SQLiteParameter("@uNavnParam", SqlDbType.Text) { Value = uNavn }; var bNavnParam = new SQLiteParameter("@bNavnParam", SqlDbType.Text) { Value = bNavn }; var passwdParam = new SQLiteParameter("@passwdParam", SqlDbType.Text) {Value = passwd}; var pc_idParam = new SQLiteParameter("@pc_idParam", SqlDbType.TinyInt) { Value = pc_id }; var noterParam = new SQLiteParameter("@noterParam", SqlDbType.Text) { Value = noter }; var licens_idParam = new SQLiteParameter("@licens_idParam", SqlDbType.TinyInt) { Value = licens_id }; var insertSQL = new SQLiteCommand("INSERT INTO Brugere (navn, brugernavn, password, pc_id, noter, licens_id)" + "VALUES ('@uNameParam', '@bNavnParam', '@passwdParam', '@pc_idParam', '@noterParam', '@licens_idParam')", conn); insertSQL.Parameters.Add(uNavnParam); //replace paramenter with verified userinput insertSQL.Parameters.Add(bNavnParam); insertSQL.Parameters.Add(passwdParam); insertSQL.Parameters.Add(pc_idParam); insertSQL.Parameters.Add(noterParam); insertSQL.Parameters.Add(licens_idParam); insertSQL.ExecuteNonQuery(); //Execute query //Close connection DBConnection.CloseDB(conn); //Let the user know that it was changed succesfully this.Text = "Succes! Changed!"; } catch(SQLiteException e) { //Catch error MessageBox.Show(e.ToString(), "ALARM"); } It executes perfectly, but when I view my "brugere" table, it has inserted the values: '@uNameParam', '@bNavnParam', '@passwdParam', '@pc_idParam', '@noterParam', '@licens_idParam' literally. Instead of replacing them. I have tried making a breakpoint and checked the parameters, they do have the correct assigned values. So that is not the issue either. I have been tinkering with this a lot now, with no luck, can anyone help? Oh and for reference, here is the OpenDB method from the DBConnection class: public static SQLiteConnection OpenDB() { try { //Gets connectionstring from app.config const string myConnectString = "data source=data;"; var conn = new SQLiteConnection(myConnectString); conn.Open(); return conn; } catch (SQLiteException e) { MessageBox.Show(e.ToString(), "ALARM"); return null; } }

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  • jQuery load Google Visualization API with AJAX

    - by Curro
    Hello. There is an issue that I cannot solve, I've been looking a lot in the internet but found nothing. I have this JavaScript that is used to do an Ajax request by PHP. When the request is done, it calls a function that uses the Google Visualization API to draw an annotatedtimeline to present the data. The script works great without AJAX, if I do everything inline it works great, but when I try to do it with AJAX it doesn't work!!! The error that I get is in the declaration of the "data" DataTable, in the Google Chrome Developer Tools I get a Uncaught TypeError: Cannot read property 'DataTable' of undefined. When the script gets to the error, everything on the page is cleared, it just shows a blank page. So I don't know how to make it work. Please help Thanks in advance $(document).ready(function(){ // Get TIER1Tickets $("#divTendency").addClass("loading"); $.ajax({ type: "POST", url: "getTIER1Tickets.php", data: "", success: function(html){ // Succesful, load visualization API and send data google.load('visualization', '1', {'packages': ['annotatedtimeline']}); google.setOnLoadCallback(drawData(html)); } }); }); function drawData(response){ $("#divTendency").removeClass("loading"); // Data comes from PHP like: <CSV ticket count for each day>*<CSV dates for ticket counts>*<total number of days counted> // So it has to be split first by * then by , var dataArray = response.split("*"); var dataTickets = dataArray[0]; var dataDates = dataArray[1]; var dataCount = dataArray[2]; // The comma separation now splits the ticket counts and the dates var dataTicketArray = dataTickets.split(","); var dataDatesArray = dataDates.split(","); // Visualization data var data = new google.visualization.DataTable(); data.addColumn('date', 'Date'); data.addColumn('number', 'Tickets'); data.addRows(dataCount); var dateSplit = new Array(); for(var i = 0 ; i < dataCount ; i++){ // Separating the data because must be entered as "new Date(YYYY,M,D)" dateSplit = dataDatesArray[i].split("-"); data.setValue(i, 0, new Date(dateSplit[2],dateSplit[1],dateSplit[0])); data.setValue(i, 1, parseInt(dataTicketArray[i])); } var annotatedtimeline = new google.visualization.AnnotatedTimeLine(document.getElementById('divTendency')); annotatedtimeline.draw(data, {displayAnnotations: true}); }

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  • WebClient error when using a thread in .NET 4

    - by Kiranu
    I'm having a very weird error using the WebClient class in .NET 4. The app simply downloads some files off the internet and provides output on a textbox (the GUI is WPF). The method that does this is the following: void DownloadFiles(object files) { fileL = (List<string>) files; foreach (string url in fileL) { byte[] data; using (System.Net.WebClient k = new WebClient()) { data = k.DownloadData(url); } //Bunch of irrelevant code goes here... } } (I added the using while trying to divine [yes I'm that desperate/ignorant] a solution, the problem happens even if the webclient is declared and initialized outside the foreach loop) Now the problem appears only when I'm executing this method on a thread separate from the WPF UI main thread. If it is executed on the UI thread then it works perfectly. When a new thread is created with: Thread t = new Thread(DownloadFiles); t.Start(files); The first time the code goes into the loop it will work, but when its the second pass inside the loop, I will always receive a TargetParameterCountException. I can't make any sense of this error. Any help is very much appreciated. EDIT Here are the Exception Details: Exception.Message = "Parameter count mismatch." Exception.InnerException = null Exception.Source = " mscorlib" The StackTrace follows: at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) at System.Delegate.DynamicInvokeImpl(Object[] args) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.runTryCode(Object userData) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window window) at System.Windows.Application.Run() at FileDownloader.App.Main() in d:\mis documentos\visual studio 2010\Projects\OneMangaDownloader\FileDownloader\obj\x86\Debug\App.g.cs:line 0 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()

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  • GameKit: GKSession manual

    - by mongeta
    Hello, I want to connect two devices using the GKSession, starting one as a server and the other one as a client. Using this configuration I can't use the GKPeerPickerController. I'm having problems for connecting the two devices: Using only bluetooth: impossible using WiFi: at least there are some data exchange between the devices but no successfully conection. In the interface file I have the GKSessionDelegate GKSession *session; In the implementation, I start the server using this code: session = [[GKSession alloc] initWithSessionID:@"iFood" displayName:nil sessionMode:GKSessionModeClient]; session.delegate = self; session.available = YES; The client starts using this code: session = [[GKSession alloc] initWithSessionID:@"iFood" displayName:nil sessionMode:GKSessionModeServer]; session.delegate = self; session.available = YES; How I can force the use of Bluetooth instead of the WiFi ? Also I have implemented those calls: -(void)session:(GKSession *)session didReceiveConnectionRequestFromPeer:(NSString *)peerID { NSLog(@"Someone is trying to connect"); } - (BOOL)acceptConnectionFromPeer:(NSString *)peerID error:(NSError **)error { NSLog(@"acceptConnectionFromPeer"); } When I start, I get this into the debugger: Listening on port 50775 2010-02-19 14:55:02.547 iFood[3009:5103] handleEvents started (2) And when the other device starts to find, I get this: ~ DNSServiceBrowse callback: Ref=187f70, Flags=2, IFIndex=2 (name=[en0]), ErrorType=0 name=00eGs1R1A..Only by Audi regtype=_2c3mugr67ej6j7._udp. domain=local. ~ DNSServiceQueryRecord callback: Ref=17bd40, Flags=2, IFIndex=2 (name=[en0]), ErrorType=0 fullname=00eGs1R1A\.\.Only\032by\032Audi._2c3mugr67ej6j7._udp.local. rrtype=16 rrclass=1 rdlen=18 ttl=4500 ** peer 1527211048: oldbusy=0, newbusy=0 ~ DNSServiceBrowse callback: Ref=187f70, Flags=2, IFIndex=-3 (name=[]), ErrorType=0 name=00eGs1R1A..Only by Audi regtype=_2c3mugr67ej6j7._udp. domain=local. GKPeer[186960] 1527211048 service count old=1 new=2 ~ DNSServiceQueryRecord callback: Ref=17bd40, Flags=2, IFIndex=-3 (name=[]), ErrorType=0 fullname=00egs1r1a\.\.only\032by\032audi._2c3mugr67ej6j7._udp.local. rrtype=16 rrclass=1 rdlen=18 ttl=7200 ** peer 1527211048: oldbusy=0, newbusy=0 ~ DNSServiceBrowse callback: Ref=187f70, Flags=2, IFIndex=-3 (name=[]), ErrorType=0 name=00TF5kc1A..Only by Audi regtype=_2c3mugr67ej6j7._udp. domain=local. ~ DNSServiceQueryRecord callback: Ref=188320, Flags=2, IFIndex=-3 (name=[]), ErrorType=0 fullname=00tf5kc1a\.\.only\032by\032audi._2c3mugr67ej6j7._udp.local. rrtype=16 rrclass=1 rdlen=18 ttl=7200 ** peer 1723356125: oldbusy=0, newbusy=0 ~ DNSServiceQueryRecord callback: Ref=188320, Flags=2, IFIndex=2 (name=[en0]), ErrorType=0 fullname=00TF5kc1A\.\.Only\032by\032Audi._2c3mugr67ej6j7._udp.local. rrtype=16 rrclass=1 rdlen=18 ttl=4500 ** peer 1723356125: oldbusy=0, newbusy=0 What I'm missing here ? I'm sure that both devices have bluetooth enabled and connected into the same WiFi. thanks, r.

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  • CGContextDrawPDFPage doesn't seem to persist in CGContext

    - by erichf
    I am trying to access the pixels of a CGContext written to with a PDF, but the bitmap buffer doesn't seem to update. Any help would be appreciated: //Get the reference to our current page pageRef = CGPDFDocumentGetPage(docRef, iCurrentPage); //Start with a media crop, but see if we can shrink to smaller crop CGRect pdfRect1 = CGRectIntegral(CGPDFPageGetBoxRect(pageRef, kCGPDFMediaBox)); CGRect r1 = CGRectIntegral(CGPDFPageGetBoxRect(pageRef, kCGPDFCropBox)); if (!CGRectIsEmpty(r1)) pdfRect1 = r1; int wide = pdfRect1.size.width + pdfRect1.origin.x; int high = pdfRect1.size.height + pdfRect1.origin.y; CGContextRef ctxBuffer = NULL; CGColorSpaceRef colorSpace; UInt8* bitmapData; int bitmapByteCount; int bitmapBytesPerRow; bitmapBytesPerRow = (wide * 4); bitmapByteCount = (bitmapBytesPerRow * high); colorSpace = CGColorSpaceCreateDeviceRGB(); bitmapData = malloc( bitmapByteCount ); if (bitmapData == NULL) { DebugLog (@"Memory not allocated!"); return; } ctxBuffer = CGBitmapContextCreate (bitmapData, wide, high, 8, // bits per component bitmapBytesPerRow, colorSpace, kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big); // if (ctxBuffer== NULL) { free (bitmapData); DebugLog (@"Context not created!"); return; } CGColorSpaceRelease( colorSpace ); //White out the current context CGContextSetRGBFillColor(ctxBuffer, 1.0, 1.0, 1.0, 1.0); CGContextFillRect(ctxBuffer, CGContextGetClipBoundingBox(ctxBuffer)); CGContextDrawPDFPage(ctxBuffer, pageRef); //!!!This displays just fine to the context passed in from - (void)drawLayer:(CALayer *)layer inContext:(CGContextRef)ctx. That is, I can see the PDf page rendered, so we know ctxBuffer was created correctly //However, if I view bitmapData in memory, it only shows as 0xFF (or whatever fill color I use) CGImageRef img = CGBitmapContextCreateImage(ctxBuffer); CGContextDrawImage(ctx, tiledLayer.frame, img); void *data = CGBitmapContextGetData (ctx); for (int i = 0; i < wide; i++) { for (int j = 0; j < high; j++) { //All of the bytes show as 0xFF (or whatever fill color I test with)?! int byteIndex = (j * 4) + i * 4; UInt8 red = bitmapData[byteIndex]; UInt8 green = bitmapData[byteIndex + 1]; UInt8 blue = bitmapData[byteIndex + 2]; UInt8 alpha = m_PixelBuf[byteIndex + 3]; } } I have also tried using CGDataProviderCopyData(CGImageGetDataProvider(img)) & CFDataGetBytePtr, but the results are the same?

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  • availability of Win32_MountPoint and Win32_Volume on Windows XP?

    - by SteveC
    From the MSDN articles I've found -- http://msdn.microsoft.com/en-us/library/aa394515(v=VS.85).aspx -- Win32_Volume and Win32_MountPoint aren't available on Windows XP. However, I'm developing a C# app on Windows XP (64bit), and I can get to those WMI classes just fine. Users of my app will be on Windows XP sp2 with .Net 3.5 sp1. Googling around, I can't determine whether I can count on this or not. Am I successful on my system because of one or more of the following: - windows xp service pack 2? - visual studio 2008 sp1 was installed? - .Net 3.5 sp1? Should I use something other than WMI to get at the volume/mountpoint info? Below is sample code that's working... public static Dictionary<string, NameValueCollection> GetAllVolumeDeviceIDs() { Dictionary<string, NameValueCollection> ret = new Dictionary<string, NameValueCollection>(); // retrieve information from Win32_Volume try { using (ManagementClass volClass = new ManagementClass("Win32_Volume")) { using (ManagementObjectCollection mocVols = volClass.GetInstances()) { // iterate over every volume foreach (ManagementObject moVol in mocVols) { // get the volume's device ID (will be key into our dictionary) string devId = moVol.GetPropertyValue("DeviceID").ToString(); ret.Add(devId, new NameValueCollection()); //Console.WriteLine("Vol: {0}", devId); // for each non-null property on the Volume, add it to our NameValueCollection foreach (PropertyData p in moVol.Properties) { if (p.Value == null) continue; ret[devId].Add(p.Name, p.Value.ToString()); //Console.WriteLine("\t{0}: {1}", p.Name, p.Value); } // find the mountpoints of this volume using (ManagementObjectCollection mocMPs = moVol.GetRelationships("Win32_MountPoint")) { foreach (ManagementObject moMP in mocMPs) { // only care about adding directory // Directory prop will be something like "Win32_Directory.Name=\"C:\\\\\"" string dir = moMP["Directory"].ToString(); // find opening/closing quotes in order to get the substring we want int first = dir.IndexOf('"') + 1; int last = dir.LastIndexOf('"'); string dirSubstr = dir.Substring(first , last - first); // use GetFullPath to normalize/unescape any extra backslashes string fullpath = Path.GetFullPath(dirSubstr); ret[devId].Add(MOUNTPOINT_DIRS_KEY, fullpath); } } } } } } catch (Exception ex) { Console.WriteLine("Problem retrieving Volume information from WMI. {0} - \n{1}",ex.Message,ex.StackTrace); return ret; } return ret; }

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  • Update Panel error: Control with the ID "xxx" could not be found in the UpdatePanel

    - by George
    I have a composite drop down calendar user control that consists of a textbox and and calendar image and a validation control. I expose a property called "TextBox" on the usercontrol which returns a reference to the textbox used within the control. This is the textbox that the user enters the date into. In the ASPX page, I have an instance of this usercontrol: <uc1:DropDownCalendar ID="dtmDateFirstEntry" runat="server" Required="True" /> In my code behind, I want to detect when a user has tabbed off of the textbox and, using an UpdatePanel, referesh an appropriate message depending on the date that was specified. Elsewhere in the ASPX page I have this: <asp:UpdatePanel ID="upIntendedStay" runat="server"> <ContentTemplate> <asp:Label ID="Label4" runat="server" Text="Update this text from server" CssClass="ErrorText"></asp:Label> </ContentTemplate> </asp:UpdatePanel> Here's what I do in the code behind: If Not Me.IsPostBack Then dtmDateFirstEntry.TextBox.AutoPostBack = True Dim trigger As New AsyncPostBackTrigger trigger.ControlID = dtmDateFirstEntry.TextBox.ClientID trigger.EventName = "onChange" upIntendedStay.Triggers.Add(trigger) End If When the page runs and I view the source, I see something like this: <input id="ctl00_phPageContent_dtmDateFirstEntry_txtDate" class="DefaultTextBox" name="ctl00$phPageContent$dtmDateFirstEntry$txtDate" onchange="javascript:setTimeout('__doPostBack(\'ctl00$phPageContent$dtmDateFirstEntry$txtDate\',\'\')', 0)" onkeypress="if (WebForm_TextBoxKeyHandler(event) == false) return false;" style="width: 112px;" type="text" value="Mar-29-2010" /> <input id="ctl00_phPageContent_dtmDateFirstEntry_imgDate" name="ctl00$phPageContent$dtmDateFirstEntry$imgDate" src="images/calendar.JPG" style="border-width: 0px;" type="image" />&nbsp; When I run it, I get this error: A control with ID 'ctl00_phPageContent_dtmDateFirstEntry_txtDate' could not be found for the trigger in UpdatePanel 'upIntendedStay'. I didn't think that the trigger control had to be within the UpdatePanel. I thought that was the whole point of adding the trigger. How do I refresh this update panel changes to the text in the date usercontrol. Next I will have to add other triggers to trigger the refreshing of the Update Panel from other controls scattered across the page, so clearly all of the trigger sources cannot be within the UpdatePanel.

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  • Sentiment analysis with NLTK python for sentences using sample data or webservice?

    - by Ke
    I am embarking upon a NLP project for sentiment analysis. I have successfully installed NLTK for python (seems like a great piece of software for this). However,I am having trouble understanding how it can be used to accomplish my task. Here is my task: I start with one long piece of data (lets say several hundred tweets on the subject of the UK election from their webservice) I would like to break this up into sentences (or info no longer than 100 or so chars) (I guess i can just do this in python??) Then to search through all the sentences for specific instances within that sentence e.g. "David Cameron" Then I would like to check for positive/negative sentiment in each sentence and count them accordingly NB: I am not really worried too much about accuracy because my data sets are large and also not worried too much about sarcasm. Here are the troubles I am having: All the data sets I can find e.g. the corpus movie review data that comes with NLTK arent in webservice format. It looks like this has had some processing done already. As far as I can see the processing (by stanford) was done with WEKA. Is it not possible for NLTK to do all this on its own? Here all the data sets have already been organised into positive/negative already e.g. polarity dataset http://www.cs.cornell.edu/People/pabo/movie-review-data/ How is this done? (to organise the sentences by sentiment, is it definitely WEKA? or something else?) I am not sure I understand why WEKA and NLTK would be used together. Seems like they do much the same thing. If im processing the data with WEKA first to find sentiment why would I need NLTK? Is it possible to explain why this might be necessary? I have found a few scripts that get somewhat near this task, but all are using the same pre-processed data. Is it not possible to process this data myself to find sentiment in sentences rather than using the data samples given in the link? Any help is much appreciated and will save me much hair! Cheers Ke

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  • OperationalError "unable to open database file" processing query results with SQLAlchemy and SQLite3

    - by Peter
    I'm running into this little problem that I hope is just a dumb user error. It looks like some sort of a size limit with a query to a SQLite database. I managed to reproduce the issue with an in-memory DB and a simple script shown below. I can make it work by either reducing the number of records in the DB; or by reducing the size of each record; or by dropping the order_by() call. I am using Python 2.5.5 and SQLAlchemy 0.6.0 in a Cygwin environment. Thanks! #!/usr/bin/python from sqlalchemy.orm import sessionmaker import sqlalchemy import sqlalchemy.orm class Person(object): def __init__(self, name): self.name = name engine = sqlalchemy.create_engine('sqlite:///:memory:') Session = sessionmaker(bind=engine) metadata = sqlalchemy.schema.MetaData(bind=engine) person_table = sqlalchemy.Table('person', metadata, sqlalchemy.Column('id', sqlalchemy.types.Integer, primary_key=True), sqlalchemy.Column('name', sqlalchemy.types.String)) metadata.create_all(engine) sqlalchemy.orm.mapper(Person, person_table) session = Session() session.add_all([Person("012345678901234567890123456789012") for i in range(5000)]) session.commit() persons = session.query(Person).order_by(Person.name).all() print "count =", len(persons) session.close() The all() call to the query result fails with the OperationalError exception: Traceback (most recent call last): File "./stress.py", line 27, in <module> persons = session.query(Person).order_by(Person.name).all() File "/usr/lib/python2.5/site-packages/sqlalchemy/orm/query.py", line 1343, in all return list(self) File "/usr/lib/python2.5/site-packages/sqlalchemy/orm/query.py", line 1451, in __iter__ return self._execute_and_instances(context) File "/usr/lib/python2.5/site-packages/sqlalchemy/orm/query.py", line 1456, in _execute_and_instances mapper=self._mapper_zero_or_none()) File "/usr/lib/python2.5/site-packages/sqlalchemy/orm/session.py", line 737, in execute clause, params or {}) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/base.py", line 1109, in execute return Connection.executors[c](self, object, multiparams, params) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/base.py", line 1186, in _execute_clauseelement return self.__execute_context(context) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/base.py", line 1215, in __execute_context context.parameters[0], context=context) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/base.py", line 1284, in _cursor_execute self._handle_dbapi_exception(e, statement, parameters, cursor, context) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/base.py", line 1282, in _cursor_execute self.dialect.do_execute(cursor, statement, parameters, context=context) File "/usr/lib/python2.5/site-packages/sqlalchemy/engine/default.py", line 277, in do_execute cursor.execute(statement, parameters) sqlalchemy.exc.OperationalError: (OperationalError) unable to open database file u'SELECT person.id AS person_id, person.name AS person_name \nFROM person ORDER BY person.name' ()

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  • jQuery unbinding click event when maximum number of children are displayed

    - by RyanP13
    I have a personal details form that alows you to enter a certain number of dependants which is determined by the JSP application. The first dependant is visible and the user has the option to add dependants up to the maximum number. All other dependants are hidden by default and are displayed when a user clicks the 'Add another dependant button'. When the maximum number of dependants has been reached the button is greyed out and a message is generated via jQuery and displayed to tell the user exactly this. The issue i am having is when the maximum number of dependants has been reached the message is displayed but then the user can click the button to add more dependants and the message keeps on generating. I thought unbinding the click event would sort this but it seems to still be able to generate a second message. Here is the function i wrote to generate the message: // Dependant message function function maxDependMsg(msgElement) { // number of children can change per product, needs to be dynamic // count number of dependants in HTML var $dependLength = $("div.dependant").length; // add class maxAdd to grey out Button // create maximum dependants message and display, will not be created if JS turned off $(msgElement) .addClass("maxAdd") .after($('<p>') .addClass("maxMsg") .append("The selected web policy does not offer cover for more than " + $dependLength + " children, please contact our customer advisers if you wish discuss alternative policies available.")); } There is a hyperlink with a click event attached like so: $("a.add").click(function(){ // Show the next hidden table on clicking add child button $(this).closest('form').find('div.dependant:hidden:first').show(); // Get the number of hidden tables var $hiddenChildren = $('div.dependant:hidden').length; if ($hiddenChildren == 0) { // save visible state of system message $.cookies.set('cpqbMaxDependantMsg', 'visible'); // show system message that you can't add anymore dependants than what is on page maxDependMsg("a.add"); $(this).unbind("click"); } // set a cookie for the visible state of all child tables $('div.dependant').each(function(){ var $childCount = $(this).index('div.dependant'); if ($(this).is(':visible')) { $.cookies.set('cpqbTableStatus' + $childCount, 'visible'); } else { $.cookies.set('cpqbTableStatus' + $childCount, 'hidden'); } }); return false; }); All of the cookies code is for state saving when users are going back and forward through the process.

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  • Server side Xforms form validation and integration into ASP.NET

    - by Nigel
    I have recently been investigating methods of creating web-based forms for an ASP.NET web application that can be edited and managed at runtime. For example an administrator might wish to add a new validation rule or a new set of fields. The holy grail would provide a means of specifying a form along with (potentially very complex) arbitrary validation rules, and allocation of data sources for each field. The specification would then be used to update the deployed form in the web application which would then validate submissions both on the client side and on the server side. My investigations led me to Xforms and a number of technologies that support it. One solution appears to be IBM Lotus Forms, but this requires a very large investment in terms of infrastructure, which makes it infeasible, although the forms designer may be useful as a stand-alone tool for creating the forms. I have also discounted browser plug-ins as the form must be publicly visible and cross-browser compliant. I have noticed that there are numerous javascript libraries that provide client side implementations given an Xforms schema. These would provide a partial solution but server side validation is still a requirement. Another option seems to involve the use of server side solutions such as the Java application Orbeon. Orbeon provides a tool for specifying the forms (although not as rich as Lotus Forms Designer), but the most interesting point is that it can translate an XForms schema into an XHTML form complete with validation. The fact that it is written in Java is not a big problem if it is possible to integrate with the existing ASP.NET application. So my question is whether anyone has done this before. It sounds like a problem that should have been solved but is inherently very complex. It seems possible to use an off-the-shelf tool to design the form and export it to an Xforms schema and xhtml form, and it seems possible to take that xforms schema and form and publish it using a client side library. What seems to be difficult is providing a means of validating the form submission on the server side and integrating the process nicely with .NET (although it seems the .NET community doesn't involve themselves with XForms; please correct me if I'm wrong on this count). I would be more than happy if a product provided something simple like a web service that could validate a submission against a schema. Maybe Orbeon does this but I'd be grateful if somebody in the know could point me in the right direction before I research it further. Many thanks.

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  • Pass or Get a value from Parent ViewModel down to Sub-ViewModel?

    - by mkmurray
    I am using the MVVM Light framework as well as Unity for DI. I have some nested Views, each bound to a corresponding ViewModel. The ViewModels are bound to each View's root control DataContext via the ViewModelLocator idea that Laurent Bugnion has put into MVVM Light. This allows for finding ViewModels via a static resource and for controlling the lifetime of ViewModels via a Dependency Injection framework, in this case Unity. It also allows for Expression Blend to see everything in regard to ViewModels and how to bind them. As I stated the Views have a healthy dose of nesting, but the ViewModels don't really know anything about each other. A parent view binds to its corresponding ViewModel via the static resource ViewModelLocator (which uses Unity to control the construction and lifetime of the ViewModel object). That parent view contains a user control in it that is another sub-view, which then goes and gets its corresponding ViewModel via the ViewModelLocator as well. The ViewModels don't have references to each other or know any hierarchy in regard to each other. So here's an example of how the ViewModels do interact via messaging. I've got a parent View that has a ComboBox databound to an ObservableCollection in its ViewModel. The ComboBox's SelectedItem is also bound (two-way) to a property on the ViewModel. When the selection of the ComboBox changes, this is to trigger updates in other Views and sub-Views. Currently I am accomplishing this via the Messaging system that is found in MVVM Light. So I'm wondering what the best practice would be to get information from one ViewModel to another? In this case, what I need to pass down to sub-ViewModels is basically a user Guid representing the currently logged in user. The top-most parent View (well, ViewModel) will know this information, but I'm not sure how to get it down into the sub-ViewModels. Some possible approaches I can think of: Should the sub-ViewModel ask the static resource ViewModelLocator for a reference to the same object the parent View is using and access the property that way? It seems like ViewModels going through each other's properties is not very clean and couples them together unnecessarily. I'm already using messaging to notify the sub-Views that the user selected a new item in the ComboBox and to update accordingly. But the object type that is being selected in the ComboBox is not really directly related to this data value that the sub-Views need.

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  • Synchronized Enumerator in C#

    - by Dan Bryant
    I'm putting together a custom SynchronizedCollection<T> class so that I can have a synchronized Observable collection for my WPF application. The synchronization is provided via a ReaderWriterLockSlim, which, for the most part, has been easy to apply. The case I'm having trouble with is how to provide thread-safe enumeration of the collection. I've created a custom IEnumerator<T> nested class that looks like this: private class SynchronizedEnumerator : IEnumerator<T> { private SynchronizedCollection<T> _collection; private int _currentIndex; internal SynchronizedEnumerator(SynchronizedCollection<T> collection) { _collection = collection; _collection._lock.EnterReadLock(); _currentIndex = -1; } #region IEnumerator<T> Members public T Current { get; private set;} #endregion #region IDisposable Members public void Dispose() { var collection = _collection; if (collection != null) collection._lock.ExitReadLock(); _collection = null; } #endregion #region IEnumerator Members object System.Collections.IEnumerator.Current { get { return Current; } } public bool MoveNext() { var collection = _collection; if (collection == null) throw new ObjectDisposedException("SynchronizedEnumerator"); _currentIndex++; if (_currentIndex >= collection.Count) { Current = default(T); return false; } Current = collection[_currentIndex]; return true; } public void Reset() { if (_collection == null) throw new ObjectDisposedException("SynchronizedEnumerator"); _currentIndex = -1; Current = default(T); } #endregion } My concern, however, is that if the Enumerator is not Disposed, the lock will never be released. In most use cases, this is not a problem, as foreach should properly call Dispose. It could be a problem, however, if a consumer retrieves an explicit Enumerator instance. Is my only option to document the class with a caveat implementer reminding the consumer to call Dispose if using the Enumerator explicitly or is there a way to safely release the lock during finalization? I'm thinking not, since the finalizer doesn't even run on the same thread, but I was curious if there other ways to improve this.

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  • Messing with Encoding and XslCompiledTransform

    - by Josemalive
    Hello, im messing with the encodings. For one hand i have a url that is responding me in UTF-8 (im pretty sure thanks to firebug plugin). Im opening the url reading the content in UTF-8 using the following code: StreamReader reader = new StreamReader(response.GetResponseStream(),System.Text.Encoding.UTF8); For other hand i have a transformation xslt sheet with the following code: <?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl"> <xsl:output method="xml" indent="yes"/> <xsl:template match="@* | node()"> <xsl:copy> <xsl:apply-templates select="@* | node()"/> <br/> hello </xsl:copy> </xsl:template> </xsl:stylesheet> This xslt sheet is saved in UTF-8 format too. I use the following code to mix the xml with the xslt: StringWriter writer = new StringWriter(); XslCompiledTransform transformer = new XslCompiledTransform(); transformer.Load(HttpContext.Current.Server.MapPath("xslt\\xsltsheet.xslt"); XmlWriterSettings xmlsettings = new XmlWriterSettings(); xmlsettings.Encoding = System.Text.Encoding.UTF8; transformer.Transform(xmlreader, null, writer); return writer; Then after all im render in the webbrowser the content of this writer and im getting the following error: The XML page cannot be displayed Cannot view XML input using style sheet. Please correct the error and then click the Refresh button, or try again later. Switch from current encoding to specified encoding not supported. Error processing resource 'http://localhost:2541/Results.... <?xml version="1.0" encoding="utf-16"?> Im wondering where is finding the UTF-16 encoding take in count that: All my files are saved as UTF-8 The response from the server is in UTF-8 The way of read the xslt sheet is configured as UTF-8. Any help would be appreciated. Thanks in advance. Best Regards. Jose.

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  • ASP.net Ajax tab container not appearing

    - by Eyla
    I created new web project using VS 2008 with enabled Ajax template with C# and Framework 3.5. I added Ajax reference to the project and I can see all Ajax toolkit in my tool box. The problem that when I add tab container with Tab Panels then run the projects nothing appear on the browser and I tried few browsers. I'm including my code and I wish that someone would help me. Regards, My Code: ................................................................ <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Contacts._Default" %> <%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server" /> <div> <asp:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="0"> <asp:TabPanel runat="server" HeaderText="TabPanel1" ID="TabPanel1"> <ContentTemplate> tab 1 </ContentTemplate> </asp:TabPanel> <asp:TabPanel runat="server" HeaderText="TabPanel2" ID="TabPanel2"> <ContentTemplate> tab 2 </ContentTemplate> </asp:TabPanel> <asp:TabPanel runat="server" HeaderText="TabPanel3" ID="TabPanel3"> <ContentTemplate> tab 3 </ContentTemplate> </asp:TabPanel> </asp:TabContainer> </div> </form> </body> </html>

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  • Linq To Sql Concat() dropping fields in created TSQL

    - by user191468
    This is strange. I am moving a stored proc to a service. The TSQL unions multiple selects. To replicate this I created multiple queries resulting in a common new concrete type. Then I issue a return result.ToString(); and the resulting SQL selects have varying numbers of columns specified thus causing an MSSQL Msg 205... using (var db = GetDb()) { var fundInv = from f in db.funds select new Investments { Company = f.company, FullName = f.fullname, Admin = f.admin, Fund = f.fund1, FundCode = f.fundcode, Source = STR_FUNDS, IsPortfolio = false, IsActive = f.active, Strategy = f.strategy, SubStrategy = f.substrategy, AltStrategy = f.altstrategy, AltSubStrategy = f.altsubstrategy, Region = f.region, AltRegion = f.altregion, UseAlternate = f.usealt, ClassesAllowed = f.classallowed }; var stocksInv = from s in db.stocks where !fundInv.Select(f => f.Company).Contains(s.vehcode) select new Investments { Company = s.company, FullName = s.issuer, Admin = STR_PRS, Fund = s.shortname, FundCode = s.vehcode, Source = STR_STOCK, IsPortfolio = false, IsActive = (s.inactive == null), Strategy = s.style, SubStrategy = s.substyle, AltStrategy = s.altstyle, AltSubStrategy = s.altsubsty, Region = s.geography, AltRegion = s.altgeo, UseAlternate = s.usealt, ClassesAllowed = STR_GENERIC }; var bondsInv = from oi in db.bonds where !fundInv.Select(f => f.Company).Contains(oi.vehcode) select new Investments { Company = string.Empty, FullName = oi.issue, Admin = STR_PRS1, Fund = oi.issue, FundCode = oi.vehcode, Source = STR_BONDS, IsPortfolio = false, IsActive = oi.closed, Strategy = STR_OTH, SubStrategy = STR_OTH, AltStrategy = STR_OTH, AltSubStrategy = STR_OTH, Region = STR_OTH, AltRegion = STR_OTH, UseAlternate = false, ClassesAllowed = STR_GENERIC }; return (fundInv.Concat(stocksInv).Concat(bondsInv)).ToList(); } The code above results in a complex select statement where each "table" above has different column count. (see SQL below) I've been trying a few things but no change yet. Ideas are welcome. SELECT [t6].[company] AS [Company], [t6].[fullname] AS [FullName], [t6].[admin] AS [Admin], [t6].[fund] AS [Fund], [t6].[fundcode] AS [FundCode], [t6].[value] AS [Source], [t6].[value2] AS [IsPortfolio], [t6].[active] AS [IsActive], [t6].[strategy] AS [Strategy], [t6].[substrategy] AS [SubStrategy], [t6].[altstrategy] AS [AltStrategy], [t6].[altsubstrategy] AS [AltSubStrategy], [t6].[region] AS [Region], [t6].[altregion] AS [AltRegion], [t6].[usealt] AS [UseAlternate], [t6].[classallowed] AS [ClassesAllowed] FROM ( SELECT [t3].[company], [t3].[fullname], [t3].[admin], [t3].[fund], [t3].[fundcode], [t3].[value], [t3].[value2], [t3].[active], [t3].[strategy], [t3].[substrategy], [t3].[altstrategy], [t3].[altsubstrategy], [t3].[region], [t3].[altregion], [t3].[usealt], [t3].[classallowed] FROM ( SELECT [t0].[company], [t0].[fullname], [t0].[admin], [t0].[fund], [t0].[fundcode], @p0 AS [value], [t0].[active], [t0].[strategy], [t0].[substrategy], [t0].[altstrategy], [t0].[altsubstrategy], [t0].[region], [t0].[altregion], [t0].[usealt], [t0].[classallowed] FROM [zInvest].[funds] AS [t0] UNION ALL SELECT [t1].[company], [t1].[issuer], @p6 AS [value], [t1].[shortname], [t1].[vehcode], @p7 AS [value2], @p8 AS [value3], (CASE WHEN [t1].[inactive] IS NULL THEN 1 ELSE 0 END) AS [value5], [t1].[style], [t1].[substyle], [t1].[altstyle], [t1].[altsubsty], [t1].[geography], [t1].[altgeo], [t1].[usealt], @p10 AS [value6] FROM [zBank].[stocks] AS [t1] WHERE (NOT (EXISTS( SELECT NULL AS [EMPTY] FROM [zInvest].[funds] AS [t2] WHERE [t2].[company] = [t1].[vehcode] ))) AND ([t1].[vehcode] <> @p2) AND (SUBSTRING([t1].[vehcode], @p3 + 1, @p4) <> @p5) ) AS [t3] UNION ALL SELECT @p11 AS [value], [t4].[issue], @p12 AS [value2], [t4].[vehcode], @p13 AS [value3], @p14 AS [value4], [t4].[closed], @p16 AS [value6], @p17 AS [value7] FROM [zMut].[bonds] AS [t4] WHERE NOT (EXISTS( SELECT NULL AS [EMPTY] FROM [zInvest].[funds] AS [t5] WHERE [t5].[company] = [t4].[vehcode] )) ) AS [t6]

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  • WPF Visual Studio Package gives error: Could not find endpoint element with name 'WCFname' and contr

    - by Andrei
    Hi everybody. This error has been covered before in other questions, however not for a Visual Studio package. Could not find endpoint element with name 'WCFname' and contract 'WCFcontract' in the ServiceModel client configuration section. I have a VS package project that needs to connect to a WCF service that provides some functionality. I add a reference to the WCF service and Visual Studio automatically creates the content for the configuration file. config file: <?xml version="1.0" encoding="utf-8" ?> <configuration> <system.serviceModel> <bindings> <wsHttpBinding> <binding name="WSHttpBinding_IWCFSearchService" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true" allowCookies="false"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /> <reliableSession ordered="true" inactivityTimeout="00:10:00" enabled="false" /> <security mode="Message"> <transport clientCredentialType="Windows" proxyCredentialType="None" realm="" /> <message clientCredentialType="Windows" negotiateServiceCredential="true" algorithmSuite="Default" /> </security> </binding> </wsHttpBinding> </bindings> <client> <endpoint address="http://localhost:8732/Design_Time_Addresses/WCFSearchServiceLibrary/Service1/" binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IWCFSearchService" contract="WCFSearchServiceReference.IWCFSearchService" name="WSHttpBinding_IWCFSearchService"> <identity> <dns value="localhost" /> </identity> </endpoint> </client> </system.serviceModel> </configuration> However, when I run the application (in VS experimental mode) it doesn't seem to take the provided configuration file (app.config). Everytime it just throws this error: Could not find endpoint element with name 'WSHttpBinding_IWCFSearchService' and contract 'WCFSearchServiceReference.IWCFSearchService' in the ServiceModel client configuration section. This might be because no configuration file was found for your application, or because no endpoint element matching this name could be found in the client element. My guess is that it's taking the configuration file for Visual Studio (since it is running VS experimental mode). So yeah...why isn't it recognizing the app.config file and how could I make the application to recognize it? Any help would be very welcomed as I have already tried to fix this for some time. Thanks.

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  • Node.js + Express.js. How to RENDER less css?

    - by Paden
    Hello all, I am unable to render less css in my express workspace. Here is my current configuration (my css/less files go in 'public/stylo/'): app.configure(function() { app.set('views' , __dirname + '/views' ); app.set('partials' , __dirname + '/views/partials'); app.set('view engine', 'jade' ); app.use(express.bodyDecoder() ); app.use(express.methodOverride()); app.use(express.compiler({ src: __dirname + '/public/stylo', enable: ['less']})); app.use(app.router); app.use(express.staticProvider(__dirname + '/public')); }); Here is my main.jade file: !!! html(lang="en") head title Yea a title link(rel="stylesheet", type="text/css", href="/stylo/main.less") link(rel="stylesheet", href="http://fonts.googleapis.com/cssfamily=Droid+Sans|Droid+Sans+Mono|Ubuntu|Droid+Serif") script(src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js") script(src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.7/jquery-ui.min.js") body!= body here is my main.less css: @import "goodies.css"; body { .googleFont; background-color : #000000; padding : 20px; margin : 0px; > .header { border-bottom : 1px solid #BBB; background-color : #f0f0f0; margin : -25px -25px 30px -25px; /* important */ color : #333; padding : 15px; font-size : 18pt; } } AND here is my goodies.less css: .rounded_corners(@radius: 10px) { -moz-border-radius : @radius; -webkit-border-radius: @radius; border-radius : @radius; } .shadows(@rad1: 0px, @rad2: 1px, @rad3: 3px, @color: #999) { -webkit-box-shadow : @rad1 @rad2 @rad3 @color; -moz-box-shadow : @rad1 @rad2 @rad3 @color; box-shadow : @rad1 @rad2 @rad3 @color; } .gradient (@type: linear, @pos1: left top, @pos2: left bottom, @color1: #f5f5f5, @color2: #ececec) { background-image : -webkit-gradient(@type, @pos1, @pos2, from(@color1), to(@color2)); background-image : -moz-linear-gradient(@color1, @color2); } .googleFont { font-family : 'Droid Serif'; } Cool deal. Now: I have installed less via npm and I had heard from another post that @imports should reference the .css not the .less. In any case, I have tried the combinations of switching .less for .css in the jade and less files with no success. If you can help or have the solution I'd greatly appreciate it. Note: The jade portion works fine if I enter any ol' .css. Note2: The less compiles if I use lessc via command line.

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