.NET (Core and Framework)

norrisMiou wrote:

Is it reasonable for the performances of the application to paint controls instead of adding real controls ?

sandympatil wrote:

You have to use Ajax for implementing this functionality

internal void InvokeTest(Int32 count) {
  IAsyncResult ar;
  for (Int32 i = 0; i < count; i++) {
    TaskDelegate t = Task;
    ar = t.BeginInvoke(null, null);
    ar.AsyncWaitHandle.WaitOne();
  }
}

private void Task() {
  // create a big exception object
  throw new Exception('a', 64 * 1024);
}

Alan N wrote:

...but I thought your post was looking lonely! ...

using System.Windows.Forms;
using System;
using System.Threading;

namespace AsyncWorkerCs {
   public partial class frmMain : Form {

      [STAThread]
      static void Main() {
         Application.EnableVisualStyles();
         Application.Run(new frmMain());
      }

      public frmMain() {
         InitializeComponent();
         btCreateError.Click += btCreateError_Click;
      }

      void btCreateError_Click(object sender, EventArgs e) {
         var createError = new Action(CreateError);

         // in Release-mode this will crash the app (recommended behavior if an unhandled exception occurs).
         //createError.BeginInvoke(createError.EndInvoke, null);

         // in Release-mode this will cause no Exception, but leave the app running in an undefined state!
         createError.BeginInvoke(null, null);          
      }

      void CreateError() {
         Thread.Sleep(500);
         throw new Exception("CreateError()!");    // in Debug-mode IDE always will stop here
      }
   }
}