private void connectToolStripMenuItem_Click(object sender, EventArgs e)
{
lstChatters.Items.Clear();
NickDialog nickDlg = new NickDialog();
if (nickDlg.ShowDialog() == DialogResult.OK)
{
myNick = nickDlg.txtNick.Text;
nickDlg.Close();
}
txtMessage.Focus();
Application.DoEvents();
InstanceContext site = new InstanceContext(this);
proxy = new ChatProxy(site);
IAsyncResult iar = proxy.BeginJoin(myNick, new AsyncCallback((thisIar) =>
{
try
{
string[] list = proxy.EndJoin(thisIar);
pwDlg.Invoke((Action)(() =>
{
if (list == null)
{
pwDlg.ShowError("Error: Username already exist!");
ExitChatSession();
}
else
{
pwDlg.Close();
ShowConnectMenuItem(false);
foreach (string name in list)
{
lstChatters.Items.Add(name);
}
AppendText("Connected at " + DateTime.Now.ToString() + " with user name " + myNick + Environment.NewLine);
}
}));
}
catch (Exception ex)
{
pwDlg.Invoke((Action)(() =>
{
pwDlg.ShowError("Error: Cannot connect to chat!");
ExitChatSession();
}));
}
}), null);
pwDlg = new PleaseWaitDialog();
pwDlg.ShowDialog();
}
/// <summary>
/// Is called as a callback from the asynchronous call, so simply get the
/// list of <see cref="Common.Person">Chatters</see> that will
/// be yielded as part of the Asynch Join call
/// </summary>
/// <param name="iar">The asnch result</param>
private void OnEndJoin(IAsyncResult iar)
{
try
{
Person[] list = proxy.EndJoin(iar);
HandleEndJoin(list);
}
catch (Exception e)
{
MessageBox.Show(e.Message, "Error",
MessageBoxButton.OK, MessageBoxImage.Error);
}
}