/// <summary>
        /// Event handler for when the asynchronous find network sessions
        /// operation has completed.
        /// </summary>
        void FindSessionsOperationCompleted(object sender,
                                            OperationCompletedEventArgs e)
        {
            GameScreen nextScreen;

            try                     {
                // End the asynchronous find network sessions operation.
                AvailableNetworkSessionCollection availableSessions =
                    NetworkSession.EndFind(e.AsyncResult);

                if (availableSessions.Count == 0)
                {
                    // If we didn't find any sessions, display an error.
                    availableSessions.Dispose();

                    nextScreen = new MessageBoxScreen(Resources.NoSessionsFound, false);
                }
                else
                {
                    // If we did find some sessions, proceed to the JoinSessionScreen.
                    nextScreen = new JoinSessionScreen(availableSessions);
                }
            } catch (Exception exception) {
                nextScreen = new NetworkErrorScreen(exception);
            }

            ScreenManager.AddScreen(nextScreen, ControllingPlayer);
        }
		/// <summary>
		/// Event handler for when the asynchronous find network sessions
		/// operation has completed.
		/// </summary>
		void FindSessionsOperationCompleted (object sender,
					OperationCompletedEventArgs e)
		{
			GameScreen nextScreen;

			try			{
				// End the asynchronous find network sessions operation.
				AvailableNetworkSessionCollection availableSessions = 
						NetworkSession.EndFind (e.AsyncResult);

				if (availableSessions.Count == 0) {
					// If we didn't find any sessions, display an error.
					availableSessions.Dispose ();

					nextScreen = new MessageBoxScreen (Resources.NoSessionsFound, false);
				} else {
					// If we did find some sessions, proceed to the JoinSessionScreen.
					nextScreen = new JoinSessionScreen (availableSessions);
				}
			} catch (Exception exception) {
				nextScreen = new NetworkErrorScreen (exception);
			}

			ScreenManager.AddScreen (nextScreen, ControllingPlayer);
		}