Removing a Contact from a Group
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A contact can also be moved to the "Other Contacts" group from a user-defined group. Moving a contact to the "Other Contacts" group involves removing the contact from the user-defined group with the IMessengerGroup::RemoveContact method.
The contact list is rebuilt by the event handler registered for the DMessengerEvents::OnContactRemovedFromGroup event.
private void removeFromGroupItem_Click(object sender, EventArgs e)
{
try
{
ListViewItem selectedContactItem = contactListView.FocusedItem;
if (selectedContactItem.Text.Length > 0)
{
object contactToRemove = null;
contactToRemove = communicator.GetContact(listDict[selectedContactItem.Index + 1],
communicator.MyServiceId);
if (contactToRemove != null)
{
IMessengerGroups theseGroups = (IMessengerGroups)communicator.MyGroups;
foreach (IMessengerGroup thisGroup in theseGroups)
{
if (thisGroup.Name == selectedContactItem.Group.Header)
{
thisGroup.RemoveContact(contactToRemove);
break;
}
}
}
selectedContactItem.BackColor = Color.Gray;
}
}
catch (ArgumentException AE)
{
MessageBox.Show("Contact List Argument Exception: " +
AE.Message.ToString());
}
catch (COMException CE)
{
MessageBox.Show("Contact List COM Exception: " +
formReturnErrors.returnComError(CE.ErrorCode));
}
catch (Exception Ex)
{
MessageBox.Show("Contact List Exception: " + Ex.Message);
}
}