/// <summary>
/// Called when a participant is removed from the conversation.
///
/// Removes the participant from the roster listbox.
/// </summary>
void conversation_ParticipantRemoved(object sender, ParticipantCollectionChangedEventArgs e)
{
//error case, the participant wasn't actually removed
if (e.StatusCode < 0)
{
Console.Out.WriteLine("Participant was not removed: code=" + e.StatusCode);
return;
}
//posts the execution into the UI thread
this.BeginInvoke(new MethodInvoker(delegate()
{
//finds the position of the participant to be removed in the roster listbox
int removePosition = -1;
for (int i = 0; i < listBoxRosterContacts.Items.Count; i++)
{
ParticipantItem item = listBoxRosterContacts.Items[i] as ParticipantItem;
if (item != null && item.Participant.Equals(e.Participant))
{
removePosition = i;
break;
}
}
//removes the participant from the roster listbox
if (removePosition > 0)
{
listBoxRosterContacts.Items.RemoveAt(removePosition);
}
}));
}
/// <summary>
/// Removes a participant from the conversation.
/// </summary>
private void buttonRemoveRosterContact_Click(object sender, EventArgs e)
{
//validates if there's a participant selected
if (listBoxRosterContacts.SelectedIndex <= 0)
{
MessageBox.Show("Please select a participant (other than self).");
return;
}
//get the selected participant for removal
ParticipantItem item = listBoxRosterContacts.SelectedItem as ParticipantItem;
//removes the participant from the conversation
try
{
if (item != null)
{
conversation.RemoveParticipant(item.Participant);
}
}
catch (LyncClientException lyncClientException)
{
Console.WriteLine(lyncClientException);
}
catch (SystemException systemException)
{
if (LyncModelExceptionHelper.IsLyncException(systemException))
{
// Log the exception thrown by the Lync Model API.
Console.WriteLine("Error: " + systemException);
}
else
{
// Rethrow the SystemException which did not come from the Lync Model API.
throw;
}
}
}