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wpfvisibilitygridsplitterwindowsformshost

WPF GridSplitter visiblity

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>
Solution

  • 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.