Question

I am trying to synchronize the horizontal scroll position of 2 WPF DataGrid controls.

I am subscribing to the ScrollChanged event of the first DataGrid:

<toolkit:DataGrid x:Name='SourceGrid' ScrollViewer.ScrollChanged='SourceGrid_ScrollChanged'> 

I have a second DataGrid:

<toolkit:DataGrid x:Name='TargetGrid'> 

In the event handler I was attempting to use the IScrollInfo.SetHorizontalOffset, but alas, DataGrid doesn’t expose IScrollInfo:

private void SourceGrid_ScrollChanged(object sender, ScrollChangedEventArgs e) {     ((IScrollInfo)TargetGrid).SetHorizontalOffset(e.HorizontalOffset);     // cast to IScrollInfo fails } 

Is there another way to accomplish this? Or is there another element on TargetGrid that exposes the necessary IScrollInfo to achieve the synchronization of the scroll positions?

BTW, I am using frozen columns, so I cannot wrap both DataGrid controls with ScrollViewers.

Answer 1

According to the Microsoft product group, traversing the visual tree to find the ScrollViewer is the recommended method, as explained in their answer on Codeplex.