Gridview in Edit Mode with and with out datasource

ref 1: http://aspadvice.com/blogs/azamsharp/archive/2006/11/08/Show-all-GridView-Rows-in-EditMode.aspx

Ref2 : through ObjectDataSource which can be set from a business Layer.

http://msdn.microsoft.com/en-us/library/ms178538.aspx

Ref3: Code Data-Bound GridView & FindControl

http://wiki.asp.net/page.aspx/476/code-data-bound-gridview-amp-findcontrol/

Ref4: http://amitpatriwala.wordpress.com/2008/04/18/inserting-new-row-in-gridview-in-aspnet-20/