.NET (Core and Framework)

'==========Server side============================
Winsock1.Protocol = sckTCPProtocol
  Winsock1.RemoteHost = strParm(0)
  Winsock1.RemotePort = 1002
  Pause (7)
  MsgBox "Before Connecting"                       'just to do something, and give time to establish connection
  Winsock1.Connect
  MsgBox "After Connecting"
  DoEvents
  'Delay2 = 1
  Pause (10)
  
  Winsock1.SendData ("Starting dropship refresh...")

private object _containerObject;

GenericTransportObject resoultGTO = new GenericTransportObject(); 
TestService.Service1 ourService = new TestService.Service1();
resoultGTO = ourService.WS_Input(gto);

System.InvalidOperationException: The type BOLayer.UserInformation was
not expected. Use the XmlInclude or SoapInclude attribute to specify types
that are not known statically.

namespace Utility
{
	public class WinAPI
	{
		public const string REGISTERED_MSG = "AllInOneDemo";
		
		[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
		public static extern uint RegisterWindowMessage(string lpString);

		[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
		public static extern int SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);

		public static int SendRegisteredMessage(uint message, int lParam, int wParam)
		{
			return SendMessage(IntPtr.Zero, message, lParam, wParam);
		}
	}
}

private uint RegisteredMessage = WinAPI.RegisterWindowMessage(Globals.REGISTERED_MSG);

int result = WinAPI.SendRegisteredMessage(this.RegisteredMessage, 123, 456);

protected override void WndProc(ref System.Windows.Forms.Message msg)
{
    base.WndProc(ref msg);
    if (msg.Msg == this.RegisteredMessage)
    {
        this.listBoxPublicMsg.Items.Add(string.Format("{0}\tLParam={0}\tWParam={1}", msg.Msg, msg.LParam, msg.WParam));
    }
}