private void btnConnect_Click(object sender, RoutedEventArgs e)
{
NetConnection.connect(txtOct1.Text, txtOct2.Text, txtOct3.Text, txtOct4.Text);
if (communicationThread == null)
{
communicationThread = new Thread(new ParameterizedThreadStart(setUser));
communicationThread.Start(txtUserName.Text);
}
ChatClient chatWindow = new ChatClient();
chatWindow.setSocket(ref NetConnection.ConnectionStream);
chatWindow.MyUsername = txtUserName.Text;
chatWindow.Show();
this.Close();
}