The provided brief description is not clear enough to understand what is the exact requirement that you are trying to achieve. However, I suppose that you want to select a row from the child level.
In order to select a cell programmatically in the child view you can use the following approach:
sender, Telerik.WinControls.UI.VirtualGridRowExpandedEventArgs e)
radVirtualGrid1.VirtualGridElement.Selection.BeginSelection(1, 1, e.ChildViewInfo ,
The following help article specified the public API for selecting certain rows: https://docs.telerik.com/devtools/winforms/controls/virtualgrid/selection/selecting-progrmmatically
If it is not the exact requirement, please specify in details what is the exact goal that you are trying to accomplish. Thus, we would be able to think about a suitable solution and assist you further.
I hope this information helps. If you need any further assistance please don't hesitate to contact me.
Dess | Tech Support Engineer, Sr.
Get quickly onboarded and successful
with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.