public partial class MainWindow : Window
{
private RowViewModel[] _previewSelection;
public MainWindow()
{
InitializeComponent();
//this is to make the cell selection more Excel like.
DataGrid.PreviewMouseRightButtonDown += HandlePreviewRightMouseDown;
DataGrid.ContextMenuOpening += HandleContextMenuOpening;
...
}
private void HandlePreviewRightMouseDown(object sender, MouseButtonEventArgs e)
{
if (DataGrid.SelectedItems.Any())
{
_previewSelection = DataGrid.SelectedItems.OfType<RowViewModel>().ToArray();
}
else
{
_previewSelection = new RowViewModel[0];
DataGrid.ContextMenu = null;
}
}
private void HandleContextMenuOpening(object sender, ContextMenuEventArgs e)
{
foreach (var selected in _previewSelection)
{
if (!DataGrid.SelectedItems.Contains(selected))
{
DataGrid.SelectedItems.Add(selected);
}
}
}
...
}
