private void HeaderTapped(GroupViewModel item)
{
try
{ //Search for the position
int selectedIndex = ExpandedGroups.IndexOf(item);
AllGroups[selectedIndex].Expanded = !AllGroups[selectedIndex].Expanded;
UpdateListContent();
}
catch (Exception e)
{
//Application.Current.MainPage.DisplayAlert("Error","Error:"+e,"OK");
}
}