/// <summary>
/// Shows an error message and calls the <see cref="Proxy_Singleton">
/// Proxy.ExitChatSession()</see> method
/// </summary>
/// <param name="errMessage">The error message to display</param>
private void Error(string errMessage)
{
ProxySingleton.ExitChatSession();
MessageBox.Show(errMessage, "Connection error", MessageBoxButton.OK, MessageBoxImage.Error);
}
/// <summary>
/// Close the chat session by calling the <see cref="Proxy_Singleton">
/// ExitChatSession()</see> method, and closing the application
/// </summary>
private void Window_Closed()
{
ProxySingleton.ExitChatSession();
Application.Current.Shutdown();
}