Extracting GroupHeaderRow template

[Sebastian]

Hi. I am working on an application where I need to modify the GroupHeaderRow template. We are using version 2015.1.225.45 of Telerik UI for WPF, but everything is in DLLs. How should I proceed to get this template?.

Regards,

Sebastian

[Martin Ivanov]

Hello Sebastian,

You can see how to extract a ControlTemplate in the Editing Control Templates help article. Can you check the article and let me know if it helps?

Regards,
Martin Ivanov
Progress Telerik

[Sebastian]

Hi. I now have a template, but I am not sure if it is the wrong version, or there is some other problem. I am trying to set the ColumnSpan=2 for the toggle button below "HeaderButton" in the GroupHeaderRowStyle template. I get the following error:

The member "IndentLevel" is not recognized or is not accessible. 

For the following code:

<grid:IndentPresenter Grid.Column="0" IndentLevel="{TemplateBinding IndentLevel}"

 

What could be the error?

[Martin Ivanov]

Hello Sebastian,

For your convenience I've extracted the GroupHeaderRow from the default Office_Black theme and used it in a sample project. I got the style from the UI for WPF installation folder. You can use the same approach with the theme you are using. I hope that helps.

Regards,
Martin Ivanov
Progress Telerik

[Sebastian]

Hi,

I managed to extract a template, but I get the following error:
"The member "IndentLevel" is not recognized or is not accessible. "
For the following code in the GroupHeaderRow control template:
<grid:IndentPresenter Grid.Column="0" IndentLevel="{TemplateBinding IndentLevel}"

What could be the cause?

 

[Martin Ivanov]

Hello Sebastian,

Can you please send me the project that reproduces the error? This will allow me to test it locally and investigate what happens.

Regards,
Martin Ivanov
Progress Telerik

[Sebastian]

Okay, I am making some progress.

Now when I try to make a style for the group header with

<Style BasedOn="{StaticResource GroupHeaderRowStyle}">

I get an error saying 'Resource "GroupHeaderRowStyle" is not found', even though I have the Telerik.Windows.Controls.GridView.dll added to References in my project. 

[Martin Ivanov]

Hello Sebastian,

The StaticResource GroupHeaderRowStyle doesn't come from the Telerik.Windows.Controls.GridView.dll, but from the Telerik.Windows.Controls.GridView.xaml file. You can read more about this in the Setting a Theme article. Note that if you don't use NoXaml dlls you don't need the BasedOn setting so you can remove it.

Regards,
Martin Ivanov
Progress Telerik