WPF GridSplitter

Question

I am experiencing weird behaviour whilst using the WPF GridSplitter.

I have the appropriate HorizontalAlignment properties set to stretch and when I resize them the GridSplitter jumps around, sometimes going back to their original positions or just jumping around as I drag them.....

Does anyone else seen or know what may be causing this?

Thanks

Here is the XAML

<GridSplitter x:Name="grdTreeSplitter" Grid.Row ="1" 
     BorderBrush="{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}" 
     BorderThickness="1"
     HorizontalAlignment="Stretch" Panel.ZIndex="0" 
     ResizeBehavior="PreviousAndNext" ResizeDirection="Rows"
     SnapsToDevicePixels="False" ShowsPreview="False" UseLayoutRounding="False"
     DragIncrement="1"
     DragDelta="grdSideExplorerSplitter_DragDelta">
  <GridSplitter.Visibility>
    <MultiBinding 
      ......
    </MultiBinding>
  </GridSplitter.Visibility>
</GridSplitter>

Answer 1

I had the same problem and found the same code works fine in Silverlight while it is broken in WPF, so I think it might be a problem with WPF. My fix was to roll out my own version of the GridSplitter, which is too big to put here, so you can see it on my blog.