Datagrid header template for arrow down/up column comes with grouping

[anc.dev]

I need to place Expand all/ Collapse all button on the header template for arrow down/up column comes with grouping.

I tried to add like follows.

<RadzenDataGridColumn OrderIndex="0" TItem="T" Width="50px" Sortable="false" Filterable="false" Resizable="false" Reorderable="false">
	<HeaderTemplate>
		<RadzenButton Click="@(args => ToggleGroups(true))" Text="@G.GetValue["EXPAND"]" Icon="unfold_more" ButtonStyle="ButtonStyle.Dark" Size="ButtonSize.ExtraSmall" Disabled=@(allGroupsExpanded == true) />
		<RadzenButton Click="@(args => ToggleGroups(false))" Text="@G.GetValue["COLLAPSE"]" Icon="unfold_less" ButtonStyle="ButtonStyle.Dark" Size="ButtonSize.ExtraSmall" Disabled=@(allGroupsExpanded == false) />
	</HeaderTemplate>
</RadzenDataGridColumn>	

but it always render after the arrow down/up column.

How can I add header template for arrow down/up column comes with grouping?

[korchev]

Hi @anc.dev,

I am not 100% sure I understand your questions but you can try with the GroupHeaderTemplate.

[anc.dev]

Hi @korchev ,

Like select all header in multiselect grid, I need to place expand all/collapse all button on It's header (not in the custom header). I want to add a template to here:

[korchev]

I see. This however isn't possible. There is no template for that section.