Hi I have to display hierarchical information (which has four levels) within a repeater. For this I decided to use the nested repeater control. I found this article on MSDN
There are plenty of examples available on internet. Following are some of that.
http://www.codeproject.com/Tips/563919/Nested-Repeater-Controls-in-ASP-NET
http://support.microsoft.com/kb/326338
From below link you can download the code also. http://everymanprogrammer.com/index.php/nested-repeaters-do-it-clean-and-simple-a-beginners-tutorial-part-2/