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POHow to implement Control.Invoke analog in custom type?
 

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  1. POHow to implement Control.Invoke analog in custom type?
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    <p>I need to implement in my class "<em>Invoke()</em>" method with the same behavior as <em>Control.Invoke()</em> has. </p> <p>So when I am working with the instance of my <em>InvokableEntity</em> class from a thread different from thread where instance was created, I will be able to call <em>invokableEntity.Invoke(<strong>delegate</strong>)</em> and <strong>delegate</strong> will be executed in the context of the thread instance of InvokableEntity was created in.</p> <p>And yes, I've read <a href="https://stackoverflow.com/questions/1739283/c-multithreading-invoke-without-a-control">this</a> question, it doesn't helped me =(</p> <p>Please take a look at his code, it illustrates my tries to implement described behavior for event handler (<strong>CustomProcessor_ProgressChanged</strong> method should be executed from thread where it was subscribed to the event, but I can't do this):</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; using System.ComponentModel; using System.Windows.Forms; namespace MultiThread { class Program { private static CustomProcessor customProcessor = new CustomProcessor(); static void Main(string[] args) { Console.WriteLine("Worker was run from thread: {0}", Thread.CurrentThread.ManagedThreadId); customProcessor.ProgressChanged += new EventHandler(CustomProcessor_ProgressChanged); Thread workerThread = new Thread(customProcessor.Process); AsyncOperation asyncOperation = AsyncOperationManager.CreateOperation(null); //SynchronizationContext context = SynchronizationContext.Current; workerThread.Start(asyncOperation); Console.ReadLine(); } static void CustomProcessor_ProgressChanged(object sender, EventArgs e) { Console.WriteLine("Custom ProgressChanged was handled in thread: {0}", Thread.CurrentThread.ManagedThreadId); } } class CustomProcessor { public event EventHandler ProgressChanged; public void RaiseProcessChanged(object o) { Console.WriteLine("RaiseProgressChanged was handled in thread: {0}", Thread.CurrentThread.ManagedThreadId); if (this.ProgressChanged != null) { this.ProgressChanged(this, EventArgs.Empty); } } public void Process(object asyncOperation) { Console.WriteLine("CustomProcessor.Process method was executed in thread: {0}", Thread.CurrentThread.ManagedThreadId); AsyncOperation asyncOperationInternal = (AsyncOperation)asyncOperation; asyncOperationInternal.Post(this.RaiseProcessChanged, null); //SynchronizationContext context = (SynchronizationContext) asyncOperation; //context.Send(s =&gt; this.RaiseProcessChanged(null), null); //this.RaiseProcessChanged(new object()); } } } </code></pre> <p>Thanks!</p>
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    1. COWhy doesn't that question (+ some good answers) help you?
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      1. POHow to implement Control.Invoke analog in custom type?
      1. USHenk Holterman
    2. COIt just doesn't work for me, I can't get workable solution. Invoke always executes in different thread =(
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    3. COShow some code.
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      1. USHenk Holterman
 

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