Insert data into radgrid

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C#

SQL

Hello,

I want to insert data into radgrid...
when i was debugging could see values in being stored in firstname and lastname..but couldn't see the data in grid after execution..i mean it not displaying in radgrid..

try
               {

                   for (int i = 0; i < e.Commands[0].NewValues.Count; i++)
                   {
                       string lastname = e.Commands[0].NewValues["lastname"].ToString();
                       string firstname = e.Commands[0].NewValues["firstname"].ToString();


                   }

              }

Thank You