public static bool IsTheMouseOnTargetRow(this Visual target, GetDragPosition pos)
{
if (target == null || pos == null)
{
return(false);
}
var posBounds = VisualTreeHelper.GetDescendantBounds(target);
var mousePos = pos((IInputElement)target);
return(posBounds.Contains(mousePos));
}
public static int GetDataGridItemCurrentRowIndex(this DataGrid grid, GetDragPosition pos)
{
if (grid == null || pos == null)
{
return(-1);
}
var curIndex = -1;
for (var i = 0; i < grid.Items.Count; i++)
{
var item = grid.GetDataGridRowItem(i);
if (!IsTheMouseOnTargetRow(item, pos))
{
continue;
}
curIndex = i;
break;
}
return(curIndex);
}