C#

const int MSG = 0x0400;
Queue<int> _Queue = new Queue<int>();

protected override void WndProc( ref Message m )
{
  if ( m.Msg == MSG ) AddImage();
  base.WndProc( ref m );
}

private void button1_Click( object sender, EventArgs e )
{
  for ( int i = 0 ; i < 1000 ; i++ ) _Queue.Enqueue( i );
  Pulse();
}

private void Pulse()
{
  Refresh();
  //Application.DoEvents();
  if ( _Queue.Count > 0 ) User32.PostMessage( Handle, MSG, 0, 0 );
}

private void AddImage()
{
  if ( _Queue.Count > 0 )
  {
    int i = _Queue.Dequeue();
    for ( int x = 0 ; x < ( int ) 1e4 ; x++ ) 
      label1.Text = "hello " + i;
  }
  Pulse();
}

----------------------------------
Be excellent to each other

static void Main(string[] args)
{        {

System.Net.ServicePointManager.ServerCertificateValidationCallback =delegate(Object obj, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
            {
                return true;
            };

ExchangeServiceBinding objExchangeServiceBinding = new ExchangeServiceBinding();
            objExchangeServiceBinding.Credentials = new System.Net.NetworkCredential("user", "pass", "domain.com");
            //objExchangeServiceBinding.AllowAutoRedirect = true;
            objExchangeServiceBinding.UseDefaultCredentials = true;
            objExchangeServiceBinding.Url = "https://10.11.1.250/ews/Exchange.asmx";
            
            FindItemType request = new FindItemType();
            request.ItemShape = new ItemResponseShapeType();
            request.ItemShape.BaseShape = DefaultShapeNamesType.Default;
            request.Traversal = ItemQueryTraversalType.Shallow;
            request.ParentFolderIds = new BaseFolderIdType[1];
      DistinguishedFolderIdType inbox = new    DistinguishedFolderIdType();
            inbox.Id = DistinguishedFolderIdNameType.inbox;
            request.ParentFolderIds[0] = inbox;

ServerVersionInfo objServerVersionInfo  = objExchangeServiceBinding.ServerVersionInfoValue;
}