public TableSource(HistoryController controller)
 {
     this.controller     = controller;
     historyViewModel    = ServiceContainer.Resolve <HistoryViewModel>();
     assignmentViewModel = ServiceContainer.Resolve <AssignmentViewModel>();
 }
			public TableSource (HistoryController controller)
			{
				this.controller = controller;
				historyViewModel = ServiceContainer.Resolve<HistoryViewModel>();
				assignmentViewModel = ServiceContainer.Resolve<AssignmentViewModel>();
			}