Thank you for writing.
Let me please explain simply how does the self reference hierarchy in RadGridView
work. It is necessary to specify a unique Id
for each row in the grid. In order to indicate which is the parent for a certain row, set the ParentId
field. According to the provided information it seems that you need to add the same row to different parents. For this purpose, it is necessary to use a different Id for the row and keep its other information identical. Thus, you will have the same child row's name in several parents. Additional information how to setup the self-reference hierarchy is available in the following help article: https://docs.telerik.com/devtools/winforms/gridview/hierarchical-grid/self-referencing-hierarchy
I hope this information helps. Should you have further questions I would be glad to help.