wpf datagrid row的命中测试

1. 添加鼠标左键处理

AddHandler(DataGrid.MouseLeftButtonDownEvent, new RoutedEventHandler(grdStudyList_MouseLeftButtonDown), true);

2. 命中测试

 private void grdStudyList_MouseLeftButtonDown(object sender, RoutedEventArgs e)

        {

            Point CurrentPosition = System.Windows.Input.Mouse.GetPosition(grdStudyList);

            _hitResultsList.Clear();

            VisualTreeHelper.HitTest(grdStudyList, null,

                new HitTestResultCallback(DataGridHitTestResult),

                new PointHitTestParameters(CurrentPosition));

            if (0 >= _hitResultsList.Count)

            {

                return;

            }

            var element = _hitResultsList.Where(y => y.GetType() == typeof(DataGridHeaderBorder)

                || y.GetType() == typeof(ScrollViewer));

            bool isGridCell = true;

            foreach (var x in element)

            {

                isGridCell = false;

            }

            if (!isGridCell)

            {

                return;

            }

 

           //后续逻辑处理

        }

     //

private List<DependencyObject> _hitResultsList = new List<DependencyObject>();

 public HitTestResultBehavior DataGridHitTestResult(HitTestResult result)

        {

            // Set the behavior to return visuals at all z-order levels.

            if (3 > _hitResultsList.Count)

            {

                _hitResultsList.Add(result.VisualHit);

                return HitTestResultBehavior.Continue;

            }

            else

            {

                return HitTestResultBehavior.Stop;

            }

        }