Gridview insert delete with custom objects in viewstate

[DJ Nima]

I want to design a nested gridview with insert, update, delete functionality through custom business objects dynamically inside viewstate.\[code\](Master Gridview)EmployeeID EmployeeName 1 Ted (Child Gridview) ItemID ItemName 1 Keyboard 2 Mouse 2 John (Child Gridview) ItemID ItemName 1 PSU 2 GPU 3 Printer\[/code\]I have done this in the past with datatable/dataviews but they are a real memory hog.[*]How do I implement Master/Detail functionality with business objects ? [*]What is the alternate to Dataview in master detail/business objects.I know its a rather broad question but its worth getting started on something =)