// This populates the dgUserVolunteerActivities Data Grid
// This is where activities that the user is currently signed up to volunteer for are displayed
private void populateUserVolunteerActivities()
{
try
{
dgUserVolunteerActivities.ItemsSource = _activityManager.RetrieveActivitiesByScheduleType(_user.PersonID, "Volunteer");
}
catch (Exception) { }
}