public object Execute()
{
AllGroups.Remove(DeletedGroup);
return(AllGroups);
}
public object Undo()
{
AllGroups.Remove(CreatedGroup);
return(AllGroups);
}
//internal Groups_Class DeleteGroup(int id)
//{
// Group = AllGroups.SingleOrDefault(x => x.Id == id);
//}
internal void DeleteGroup(int id)
{
Group = AllGroups.SingleOrDefault(x => x.Id == id);
AllGroups.Remove(Group);
}