RadGrid Self-referencing Hierarchy Implementation Issue

[Joy]

We are trying to implement the self referencing hierarchy in RadGrid. But the example provided in the Telerik demo site creates expand\collapse button explicitly for each row of the GridDataItem.  Besides , It hide\expand the columns through iterating the each GridNestedViewItem and their nested tables recursively. Is there any other way to implement this functionality without creating explicit button control and avoiding the recursive loop for each GridDataItem?

[Mira]

Hello Joy,

Our system indicates that you have opened a support ticket concerning the same issue.
In order to avoid duplicate posts, I suggest that we continue the communication in the support ticket.

Regards,
Mira
the Telerik team

[Michelle Chen]

I am co-ask this question. Is there any solution?

[Michelle Chen]

I have another question:
I am also using  'RadGrid Self-referencing Hierarchy'. What I need is: for the first time the page is load, I only want to expand the grid up to 3 levels, and leave the deeper levels collapse. How should I implement this?
Thanks 

[Princy]

Hello Michelle,

Give a try with the following code snippet to achieve this.

C#:

protected void RadGrid1_PreRender(object sender, EventArgs e)
    {
       if (!IsPostBack)
        {
            foreach (GridDataItem item in RadGrid1.Items)
            {
                item.Expanded = true;
                GridTableView childtableView = (GridTableView)item.ChildItem.NestedTableViews[0];
                foreach (GridDataItem childitem in childtableView.Items)
                {
                    childitem.Expanded = true;
                    GridTableView grandChildtableView = (GridTableView)childitem.ChildItem.NestedTableViews[0];
                    foreach (GridDataItem grandchilditem in grandChildtableView.Items)
                    {
                        grandchilditem.Expanded = true;
                    }
                }
            }
        }
    }

Thanks,
Princy.

[Michelle Chen]

 Thanks Princy. It works.