Chalenging Doubt in dataGrid

im using datagrid for reporting.

I have some problem in displaying data's

In this report im using ResNub# field
1. there is some records with duplication of ResNub# pls ref fig (i)
2. in this situation, i want to identify duplication and want to amake that data as Hyperlink.
3. If i click that link other duplication record should be displayed below that row. pls ref fig(ii)


Any one know abt this concept? how to acheive this in ASP.NET?

Thanks

What are you binding to? I have an idea, but it may not fit depending on how your binding.

Also what do you want the link to do?