Inheritance: ViewModelBase, INavigateSelection
 public ToDoExplorerWindow(ToDoExplorerViewModel viewModel) : this()
 {
     _viewModel = viewModel;
     TodoExplorerControl.DataContext = _viewModel;
 }
 public ToDoExplorerWindow(ToDoExplorerViewModel viewModel) : this()
 {
     ViewModel = viewModel;
     TodoExplorerControl.DataContext = ViewModel;
     viewModel.UpdateColumnHeaderInformationToMatchCached(TodoExplorerControl.MainGrid.Columns);
 }