Check the control template of your TabItem , it might have some default Margin of 10. Just a guess
Jobi Joy
2008-09-21 02:25:03
+1
A:
+1
A:
Look at the control template, it has a margin of that size. Use blend to modify the a copy of the tab control's template.
Brian Leahy
2008-09-21 06:33:01
A:
After spending a couple hours fooling around with this problem. Brian is totally right. The current version of VS does not allow changing the TabControl's template, but it can be done using Blend, and there is a margin on the template. The main drawback of doing this is that the XAML file will no longer be previewable from Visual Studio.
Stefan Rusek
2008-09-21 11:59:00
+1
A:
You can also add a negative margin to the content. I found the value to be 9 pixels...
<System_Windows_Controls:TabControl x:Name=TabControlMain Canvas.Left="0" Canvas.Top="75" Width="800" Height="525" Background="Red" HorizontalContentAlignment="Left" VerticalContentAlignment="Top" Padding="0" Margin="0">
<System_Windows_Controls:TabItem Header="Test" VerticalContentAlignment="Top" BorderThickness="0" Margin="0" Padding="0" HorizontalContentAlignment="Left">
<ContentControl>
<Grid Width="400" Height="200" Margin="-9,-9,-9,-9" Background="White"/>
</ContentControl>
</System_Windows_Controls:TabItem>
</System_Windows_Controls:TabControl>