Get rid of a 1 pixel padding/border gap in a ListView?

Question

Look at this!

I really need to get rid of this!
Look at the delcaration!

<ListView Name="list" BorderThickness="0">

How do I fix it?
This gap doesn't only happen to the scrollbar, it also happens to the items, with or WITHOUT any views.

Answer 1

Looks like a problem in the Template, most likely a property of an internal control which is not bound to any of the properties the ListBox exposes to you.

Edit by Vercas: I have found the problem.
This is the template of the ListView:

<ControlTemplate x:Key="ListView" TargetType="ListBox">
    <Border Background="{TemplateBinding Control.Background}" BorderBrush="{TemplateBinding Control.BorderBrush}" BorderThickness="{TemplateBinding Control.BorderThickness}" Name="Bd" Padding="1" SnapsToDevicePixels="True">
        <ScrollViewer Focusable="False" Padding="{TemplateBinding Control.Padding}">
            <ItemsPresenter SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" />
        </ScrollViewer>
    </Border>
    <ControlTemplate.Triggers>
        <Trigger Property="UIElement.IsEnabled" Value="False">
            <Setter Property="Border.Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" />
        </Trigger>
        <Trigger Property="ItemsControl.IsGrouping" Value="True">
            <Setter Property="ScrollViewer.CanContentScroll" Value="False" />
        </Trigger>
    </ControlTemplate.Triggers>
</ControlTemplate>

Just change the Padding of the Border to 0 and you're done.
Here is the result if you don't want to bother finding the property.

<ControlTemplate x:Key="ListView" TargetType="ListBox">
    <Border Background="{TemplateBinding Control.Background}" BorderBrush="{TemplateBinding Control.BorderBrush}" BorderThickness="{TemplateBinding Control.BorderThickness}" Name="Bd" Padding="0" SnapsToDevicePixels="True">
        <ScrollViewer Focusable="False" Padding="{TemplateBinding Control.Padding}">
            <ItemsPresenter SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" />
        </ScrollViewer>
    </Border>
    <ControlTemplate.Triggers>
        <Trigger Property="UIElement.IsEnabled" Value="False">
            <Setter Property="Border.Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" />
        </Trigger>
        <Trigger Property="ItemsControl.IsGrouping" Value="True">
            <Setter Property="ScrollViewer.CanContentScroll" Value="False" />
        </Trigger>
    </ControlTemplate.Triggers>
</ControlTemplate>

Don't forget to add this template to your ListView!