Pouplating Multiple DetailsView based on single GridView using DataKeyNames in ASP.NET

This is a example of populating three different DetailsView based on selection of of record in a GridView using DataKeyNames in C sharp and ASP .NET
In this example GridView is populated from a table called Website using SqlDataSource, on GridVies i have defined 3 DataKeyNames separated by comma, which will be used to fetch the record related to those DataKeyName from 3 tables in 3 DetailsViews ...