C#

Thread t = new Thread(new ThreadStart(SomeMethod));
t.Start();
// ...
t.Join()

using System;
using System.Threading;
 
delegate void VoidCallback();
 
class Test
{
  static void Main()
  {
    Test t = new Test();
    VoidCallback callback = new VoidCallback(t.DoSomething);
    IAsyncResult result = callback.BeginInvoke(null, null);
 
    Thread.Sleep(1000);
    Console.WriteLine("Still in Main() on main thread");
 
    callback.EndInvoke(result);
    Console.WriteLine("Done");
  }
 
  void DoSomething()
  {
    Console.WriteLine("Waiting for 3 seconds in new thread...");
    Thread.Sleep(3000);
  }
}

Cursor orig = Cursor.Current;
try
{
  Cursor.Current = Cursors.WaitCursor;
  // Do stuff...
}
finall
{
  Cursor.Current = orig;
}

Private Delegate Sub xxxDelegate(ByVal sender As Object, ByVal e As xxxEventArgs)<br />
<br />
Private Sub xxx(ByVal sender As Object, ByVal e As xxxEventArgs) Handles LongProcess.xxx<br />
<br />
If button.InvokeRequired = False Then<br />
Console.WriteLine("A - " & Cursor.Current.ToString())<br />
...<br />
Else<br />
Console.WriteLine("B - " & Cursor.Current.ToString())<br />
Dim del As New xxxDelegate(AddressOf xxx)<br />
Me.BeginInvoke(del, New Object() {sender, e})<br />
End If<br />
End Sub

Note If you call Application.DoEvents before resetting the Current property back to the Cursors.Default cursor, the application will resume listening for mouse events and will resume displaying the appropriate Cursor for each control in the application.