private void btnSend_Click(object sender, EventArgs e)
{
ChatServer obj = (ChatServer)Activator.GetObject(
typeof(ChatServer),
serverUrl + "/ChatServer");
obj.CtoSMessage(tbxName.Text, tbxMsg.Text);
tbxChat.Text += "\r\n" + "You sent :" + tbxMsg.Text;
tbxMsg.Text = string.Empty;
}