About GridViewHeaderCellStyle

[mao ruixian]

MyCode is :

 

 

<Style TargetType="gridviewTelerik:GridViewDataColumn">    

    <Setter Property="HeaderCellStyle" Value="{StaticResource GridViewHeaderCellStyle}"/>    

</Style> 

  

  

<Style x:Key ="GridViewHeaderCellStyle" TargetType="HeaderCellStyle"> 
    <Setter Property="HorizontalContentAlignment" Value="Center" />    

</Style> 

Throw the exception:
Cannot find a Resource with the Name/Key GridViewHeaderCellStyle [Line: 731 Position: 50]

Could you do me a favor?

 

 

[Pavel Pavlov]

Hello mao ruixian,

Please use the following XAML :

<Grid x:Name="LayoutRoot" Background="White">
    <Grid.Resources>
        <Style x:Key ="GridViewHeaderCellStyle" TargetType="gridviewTelerik:GridViewHeaderCell">
            <Setter Property="HorizontalContentAlignment" Value="Right" />
        </Style>
        <Style TargetType="gridviewTelerik:GridViewDataColumn">
            <Setter Property="HeaderCellStyle" Value="{StaticResource GridViewHeaderCellStyle}"/>
        </Style>
    </Grid.Resources>


    <gridviewTelerik:RadGridView >
        <gridviewTelerik:RadGridView.Columns>
            <gridviewTelerik:GridViewDataColumn HeaderCellStyle="{StaticResource GridViewHeaderCellStyle}"  ...

The reason for the exception was the order of styles were declared in XAML .
There were two more problems :

1. TargetType="HeaderCellStyle">  is incorrect
2.  You can not set style for the columns because they are not true visuals. That is why in my XAML I set the style explicitly on the column.


Greetings,
Pavel Pavlov
the Telerik team

[mao ruixian]

HI Pavel,
Thanks for your answer.

But I just wondering if I could control the style of ColumnHeader by a global file like the style of TextBlock or sth. else?
You mean the Columns are so special that can not be set by Style?

[Pavel Pavlov]

Hello mao ruixian,

Indeed.. columns are special - they are not UIElements and can not be targeted by style.
However for your case there is a simple solution -
You may set a global style directly for the HeaderCell. No need to bother with columns.
All you need is a global style targeting GridViewHeader cell without a key.
Such as :

<Grid.Resources>
           <Style TargetType="gridviewTelerik:GridViewHeaderCell">
               <Setter Property="HorizontalContentAlignment" Value="Right" />
           </Style>
       </Grid.Resources>

This modified XAML should affect all the Header cells .
Hope that helps.

All the best,
Pavel Pavlov
the Telerik team

[mao ruixian]

xmlns:gridviewTelerik="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView"
    xmlns:gridviewTelerikGrid="clr-namespace:Telerik.Windows.Controls.GridView;assembly=Telerik.Windows.Controls.GridView"

  <Style TargetType="gridviewTelerikGrid:GridViewHeaderCell">
            <Setter Property="HorizontalContentAlignment" Value="Center" />
  </Style>

 <gridviewTelerik:RadGridView   MaxHeight="268"  MaxWidth="925">
                        <gridviewTelerik:RadGridView.Columns>
                            <gridviewTelerik:GridViewDataColumn  Header="Order"/>
                        </gridviewTelerik:RadGridView.Columns>
</gridviewTelerik:RadGridView>

Sorry it still doesn't make sense.
Any problems in my codes? Please help me and thank you in advance.

[Pavel Pavlov]

Hi mao ruixian,
To avoid further confusion , I have prepared a sample project with a centered header.

Please use the attached project  as a starting point.

Regards,
Pavel Pavlov
the Telerik team