Datagrid Header background wpf

Question

I want the datagrid header to be like the one shown in the image

ie 1. There is no column seperator line between

Answer 1

Make the Border's Thickness of DataGrid's Header...

<DataGrid.HeaderStyle>
    <Style TargetType="{x:Type DataGridColumnHeader}" > 
         <Setter Property="BorderThickness" Value="0" />
    </Style>
</DataGrid.HeaderStyle>

Answer 2

请看这里： https ： //stackoverflow.com/a/4487292/376086第一条评论说，没有分隔线。