// Pop up a Connect user dialog and send a message requesting user to log in to chat.
void AttemptLogin()
{
frmConnectUser frmConnectUser = new frmConnectUser();
frmConnectUser.StartPosition = FormStartPosition.CenterParent;
frmConnectUser.ShowDialog(this);
SendData("CONNECT|" + frmConnectUser.txtUserLogin.Text);
frmConnectUser.Dispose();
}
// When the form starts, this subroutine will connect to the server and attempt to
// log in.
private void frmMain_Load(object sender, System.EventArgs e)
{
frmConnectUser frmConnectUser = new frmConnectUser();
try
{
// The TcpClient is a subclass of Socket, providing higher level
// functionality like streaming.
client = new TcpClient("localhost", PORT_NUM);
// Start an asynchronous read invoking DoRead to avoid lagging the user
// interface.
client.GetStream().BeginRead(readBuffer, 0, READ_BUFFER_SIZE, new AsyncCallback(DoRead), null);
// Make sure the window is showing before popping up connection dialog.
this.Show();
AttemptLogin();
}
catch (Exception Ex)
{
MessageBox.Show("Server is not active. Please start server and try again.",
this.Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
this.Dispose();
}
}
