public OpenDetailsCommand(MainWindowViewModel viewModel)
 {
     _viewModel = viewModel;
 }
 public NewEntryCommand(MainWindowViewModel viewModel)
 {
     _viewModel = viewModel;
 }
 public ExportCommand(MainWindowViewModel viewModel)
 {
     _viewModel = viewModel;
 }
 public ClearCommand(MainWindowViewModel viewModel)
 {
     _viewModel = viewModel;
 }