private void StartupContactSubscription(AsyncTask task, object state)
{
if (m_contactGroupServices.CurrentState != CollaborationSubscriptionState.Idle)
{
task.Complete(null);
return;
}
m_contactGroupServices.NotificationReceived += this.ContactGroupServices_NotificationReceived;
task.DoOneStep(
delegate()
{
Logger.Log(Logger.LogLevel.Info, "Starting contact subscription.");
m_contactGroupServices.BeginSubscribe(
delegate(IAsyncResult ar)
{
task.DoFinalStep(
delegate()
{
m_contactGroupServices.EndSubscribe(ar);
Logger.Log(Logger.LogLevel.Info, "Started contact subscription.");
});
},
null);
});
}
// Callback triggered when subscription to ContactGroupServices
// completes
private void EndSubscribeCompleted(IAsyncResult ar)
{
ContactGroupServices services = ar.AsyncState as ContactGroupServices;
try
{
services.EndSubscribe(ar);
_waitForSubscribedToContactsGroupsCompleted.Set();
}
catch (RealTimeException exception)
{
Console.WriteLine("Contact Group Subscription failed due to exception: {0}",
exception.ToString());
}
}
// Callback method referred to in the call to BeginSubscribe on the ContactGroupServices instance.
private void ContactGroupSubscribeCB(IAsyncResult ar)
{
ContactGroupServices services = ar.AsyncState as ContactGroupServices;
try
{
services.EndSubscribe(ar);
Console.WriteLine("In ContactGroupSubscribeCB, state is {0}", services.CurrentState.ToString());
}
// A production application should have catch blocks for a number
// of other exceptions, including OperationFailureException and PublishSubscribeException.
catch (RealTimeException exception)
{
Console.WriteLine("Contact Group Subscription failed due to exception: {0}",
exception.ToString());
}
}