// This event handler is fired when the add button is clicked. It adds a selected activity to the list of activities a group
// is participating in
private void BtnAdd_Click(object sender, RoutedEventArgs e)
{
try
{
int activityID = ((GroupActivityVM)dgGroupActivities.SelectedItem).ActivityID;
if (_activityManager.AddGroupActivity(activityID, _groupID))
{
MessageBox.Show("Activity added to " + _groupID + " group.");
populateGroupActivities();
}
}
catch (Exception)
{
MessageBox.Show("You must select an activity first");
}
}