How to Bind child Gridview control which is used inside template field of Parent Gridview Control?

How to Bind child Gridview control which is used inside template field of
Parent Gridview Control?

References

Reference NO 1

http://stackoverflow.com/questions/13643053/how-to-bind-child-gridview-control-which-is-used-inside-template-field-of-parent

Reference NO 2

http://www.mindstick.com/Articles/2552ee5c-add6-435d-87ae-57abf42b23be/?GridView%20inside%20GridView%20in%20ASP.Net%20(Nested%20GridView)

Reference NO 3

http://msdn.microsoft.com/en-us/library/ms178366(v=vs.90).aspx

Reference NO 4

http://forumarray.com/c-dynamically-adding-a-dropdownlist-to-a-template-column-within-gridview-497558

Reference NO 5

http://forums.asp.net/t/prev/1869183

Reference NO 6

http://www.codeproject.com/Articles/36528/GridView-all-in-one

Reference NO 7

http://asp.net.bigresource.com/c-Event-to-bind-a-gridview-inside-another-gridview--rMNcFGois.html

Reference NO 8

http://www.aspsnippets.com/Articles/ASPNet-Nested-GridViews-GridView-inside-GridView-with-Expand-and-Collapse-feature.aspx