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Asked: 2026-05-11T11:54:33+00:00

I have a problem regarding GridSplitter visiblity. In this, whatever I am hosting a

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I have a problem regarding GridSplitter visiblity.

In this, whatever I am hosting a Winform DataGridView. The GridSplitter, when dragged is properly visible on other controls. But not on this grid. In fact, whatever I host instead of Datagridview, becomes the topmost control, which makes the GridSplitter hide behind it.

<Grid>     <Grid.RowDefinitions>         <RowDefinition Name='rowForButton'/>         <RowDefinition Name='rowForGridSplitter' Height='Auto' MinHeight='81' />     </Grid.RowDefinitions>     <Button Grid.Row='0' Height='50' Width='110' Content='Button in First Row'/>     <my:WindowsFormsHost Panel.ZIndex='0' Grid.Row='1'  Margin='30,11,138,0' x:Name='winHost' Height='58' VerticalAlignment='Top' OpacityMask='Transparent'>                     <win:DataGridView x:Name='dataGridView'></win:DataGridView>     </my:WindowsFormsHost>             <GridSplitter  BorderThickness='1' Panel.ZIndex='1' Grid.Row='1' HorizontalAlignment='Stretch' Height='5' ShowsPreview='True' VerticalAlignment='Top'>     </GridSplitter> </Grid>
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1 Answer

  1. Windows Forms controls are always rendered seperately from your WPF controls, and as a result will always appear over your WPF application.

    See Hosting a Microsoft Win32 Window in WPF (subheading Notable Differences in Output Behavior) for more info.

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