Grouping on TreeList

[Shane Stiles]

Is there any way to have a grouping functionality on the TreeList Control?
Do you plan to add grouping in next release?
Or how can i go around it?

[Sebastian]

Hello Shane,

Presently we do not have plans to introduce grouping feature for our AJAX TreeList control. We will peg the interest in this functionality in this forum thread and based on it, we might contemplate it for a future release.

Currently I cannot think of a possible workaround to support grouping other than implementing self-referencing hierarchy with RadGrid and enabling grouping for it.

Regards,
Sebastian
the Telerik team

[Shane Stiles]

Hello Sebastian,
Thanks for your answer.
I tried the  self-referencing hierarchy with RadGrid, and I realized the CreateExpandCollapseButton method also appends the button to the grouping headers, so I need some guidance on modifying the HideExpandColumnRecursive method to make it hide the created button for the grouping headers.
Thanks

[Sebastian]

Hello Shane,

For this purpose on the following line of the HideExpandColumnRecursive method:

Button MyExpandCollapseButton = (Button)nestedView.ParentItem.FindControl("MyExpandCollapseButton");

you will need to check whether the nestedView.ParentItem instance is of type GridGroupHeaderItem and hide the expand button, if so.

I hope this information helps.

Kind regards,
Sebastian
the Telerik team