Within here I want to perform validation against existing records in the database.
I am using Template Field’s Item Template and Edit Item Template for providing read only and editing interface of the same column in the Grid View.
The Grid View control is the successor to the Data Grid and extends it in a number of ways.
With this Grid View control, you could display an entire collection of data, easily add sorting and paging, and perform inline editing.
In addition to just displaying data, the Grid View can be used to edit and delete the displayed data as well.
The Grid View comes with a pair of complementary view controls: Details View and Form View.