How to access controls in empty data template in gridview control

Refer here

http://www.aspsnippets.com/Articles/Add-record-to-Database-using-ASP.Net-GridView-EmptyDataTemplate-and-FooterTemplate.aspx

This way

//First Create DataTable
DataTable dt=new DataTable(); 
dt.Columns.Add("Name"); 
dt.Colums.Add("Marks"); 

//Add Row
DataRow row = dt.NewRow(); 
row["Name"] = "Ravi"; 
row["Marks"] = 500; 
dt.Rows.Add(row);