Expand/collapse all button in column header

[Jeremy]

Hi Telerik Team, I have a hierarchical grid set up, and would like to add an expand/collapse all button in the header of the column that has the "+" and "-" buttons that expand and collapse the inner grids. I've attached an image to show what I mean as well, is it possible to access the space there? Thanks!

[Dimitrina]

Hi,

The GridView columns Header property is an object and you can place anything inside it, in your case an expand/collapse all button. 

Kind regards,
Didie
the Telerik team

[Jeremy]

I'm looking at the Columns property on my grid, and the only columns in it are the ones that I've created. I don't see one that contains the expand/collapse buttons, I'm guessing because it is one that is auto generated by the control from the templated hierarchy? Or am I missing something?

[Dimitrina]

Hello,

 If you have defined GridViewToggleRowDetailsColumn, then you could define the header for it. Otherwise you will need to predefine the template of the GridViewHeaderRow and place the expand/collapse all button in the PART_HierarchyIndentPresenter. You could check this help article for more information.

Kind regards,
Didie
the Telerik team