Searching for a Session

Hmm, so after trying out the search it's pretty obvious that its lacking any feedback to the user.

So lets update the SearchScreen.cs to display a bit more info like "Searching..." and "Unable to find a Session" and a "Back" link etc..

Lets move out the searching of a session from the Constructor into its own function so that we can call it from the menu when a user clicks search:

public SearchScreen(NetworkSessionType networkSessionType)
{

this.networkSessionType = networkSessionType;

Search();

}

/// <summary>
/// Searches for available network sessions
/// </summary>
private void Search()
{

MenuEntries.Clear();
MenuEntries.Add("Searching...");

// Disable movement
this.isEnabled = false;

NetworkSessionProperties searchProperties = new NetworkSessionProperties();

if (this.networkSessionType == NetworkSessionType.PlayerMatch)
{

LIVESearch = NetworkSession.BeginFind(NetworkSessionType.PlayerMatch, maxLocalPlayers, searchProperties,
new AsyncCallback(SessionsFound), null);

}
if (this.networkSessionType == NetworkSessionType.SystemLink)
{

LIVESearch = NetworkSession.BeginFind(NetworkSessionType.SystemLink, maxLocalPlayers, searchProperties,
new AsyncCallback(SessionsFound), null);

}

}

/// <summary>
/// Responds to user menu selections.
/// </summary>
protected override void OnSelectEntry(int entryIndex)
{

switch (entryIndex)
{

case 0:

Search();

break;

case 1:

// Exit
ScreenManager.AddScreen(new XboxLiveScreen(this.networkSessionType));

break;

}
}

Modify the SessionFound callback function to re-enable the menu movement and also display menu entries if the available sessions is zero:

public void SessionsFound(IAsyncResult result)
{

// Re-enable movement in the menu
this.isEnabled = true;

if ((LIVESearch != null) && LIVESearch.IsCompleted)
{

availableSessions = NetworkSession.EndFind(result);
MenuEntries.Clear();

if (availableSessions != null)
{

foreach (AvailableNetworkSession availableSession in availableSessions)
{

// Only show sessions where there are available slots
if (availableSession.CurrentGamerCount < 8)
{

MenuEntries.Add(availableSession.HostGamertag + " (" +
availableSession.CurrentGamerCount.ToString() + "/8)");

}

// Limit the number of results to return
if (MenuEntries.Count >= 5)
{

break;

}

}

// Check if no sessions were found
if (availableSessions.Count == 0)
{

MenuEntries.Add("No results found, try again?");
MenuEntries.Add("Back");

}

}

LIVESearch = null;

}

}

Give it a try, im still unable to test with available sessions so let me know if you have a problem with that bit. We still need to make it that if you select an available session it will try join the session.