Forms Data Controls :: Bind GroupBy Values In Nested Repeater Control?

In a dataset i m getting values like this

IdApplication ApplicationDesc Permissions
1 User Add
1 User Delete
1 User Update
2 Role Add
2 Role Delete
3 User2 Modify
3 User2 Change

How can i Bind like in nested repeater control

In my Nested repeater control bound i need to Bind the Values like this Formate According Groupwise

User Add Update
Role Add Delete
User2 Modify Change

In the nested repeater control i taken a label in Header Template i need to bind 3 different values Application Desc once User, Role, User2 and in Item Template i had binded the <%# Eval("Application Desc")%> but i am getting like this all permissions in 1 line

Add Update Add Delete Modify Change