Gridview

Question

I am storing the value of gridview into a string. I have two lines of code.

string UserName = GridView1.Rows[e.RowIndex].Cells[4].Text.ToString(); 1

string UserName = GridView1.Rows[e.RowIndex].Values["UserName"].ToString(); 2

Both will have same Values. Which is the better option to use 1 or 2 ?