How do you style a WPF GridView Header? - wpf

Question

I went from this: WPF GridViewHeader styling questions
to this:
Now I just need to get rid of the white space to the right of the "Size" header. I basically have a template for the GridViewColumnHeader that makes it a TextBlock. Is there any way I can set the background for that header area so that it spans the entire width of the GridView?
ADDED CODE:
This is my right-most column. The grid does not span 100% of available window area. In the header I need everything to the right of this column to have the same background as the column headers themselves.
<Style x:Key="GridHeaderRight" TargetType="{x:Type GridViewColumnHeader}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GridViewColumnHeader}">
<TextBlock Text="{TemplateBinding Content}" Padding="5" Width="{TemplateBinding Width}" TextAlignment="Right">
<TextBlock.Background>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0.0" Color="#373638" />
<GradientStop Offset="1.0" Color="#77797B" />
</LinearGradientBrush>
</TextBlock.Background>
</TextBlock>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="Background" Value="Green" />
<Setter Property="Foreground" Value="White" />
<Setter Property="FontSize" Value="12" />
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0.0" Color="#373638" />
<GradientStop Offset="1.0" Color="#77797B" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
</Style>
<GridViewColumn Width="200" HeaderContainerStyle="{ StaticResource GridHeaderRight}" Header="Size">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=EmployeeNumber}" HorizontalAlignment="Right"></TextBlock>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
UPDATE
I am one step closer (I think) to solving this.
I added the following code inside the GridView tag:
<GridView.ColumnHeaderContainerStyle>
<Style TargetType="GridViewColumnHeader">
<Setter Property="BorderThickness" Value="1"></Setter>
<Setter Property="BorderBrush" Value="Green"></Setter>
<Setter Property="Height" Value="Auto"></Setter>
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0.0" Color="#373638" />
<GradientStop Offset="1.0" Color="#77797B" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
</Style>
</GridView.ColumnHeaderContainerStyle>
The border is there just so you can see the boundary of what this style covers. This is an enlarged image of what this does. It seems to be what I want if I can get rid of the little white border on the bottom.
So I guess removing that tiny white bottom border would also be an accepted answer for this one.

Answer 1

This is a simple style that will accomplish what you are looking for. Just change the Transparent background on the Border to be your desired gradient.
<Style TargetType="{x:Type GridViewColumnHeader}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GridViewColumnHeader}">
<Border BorderThickness="0,0,0,1" BorderBrush="Black" Background="Transparent">
<TextBlock x:Name="ContentHeader" Text="{TemplateBinding Content}" Padding="5,5,5,0" Width="{TemplateBinding Width}" TextAlignment="Center" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="OverridesDefaultStyle" Value="True" />
<Setter Property="Foreground" Value="Black" />
<Setter Property="FontFamily" Value="Segoe UI" />
<Setter Property="FontSize" Value="12" />
</Style>

Answer 2

sometimes the simplest way is the best. All you need to do it to change the TextBlock attached properties of GridViewColumnHeader
Define something like this in Resources:
<Style TargetType="{x:Type GridViewColumnHeader}" BasedOn="{StaticResource {x:Type GridViewColumnHeader}}">
<Setter Property="TextBlock.TextWrapping" Value="Wrap"/>
<Setter Property="TextBlock.Foreground" Value="Black"/>
</Style>

Answer 3

Have a look at the GridViewColumnHeader.Role property. The sample in the documentation for the GridViewColumnHeaderRole enumeration might give you some ideas...
EDIT: Have you considered using the GridView.HeaderStyle property ?

Answer 4

I solved this issue but I think there should be a better way of doing it. The problem was that I had TextBlocks on the header of each column. The unused area didn't have anything on the header row. I just added a TextBlock with the same background in the GridView.ColumnHeaderContainerStyle and it happened to span the rest of the unused width of the grid.
<GridView.ColumnHeaderContainerStyle>
<Style TargetType="GridViewColumnHeader">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GridViewColumnHeader}">
<TextBlock Text="" Padding="5">
<TextBlock.Background>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0.0" Color="#373638" />
<GradientStop Offset="1.0" Color="#77797B" />
</LinearGradientBrush>
</TextBlock.Background>
</TextBlock>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GridView.ColumnHeaderContainerStyle>