Getting the record from the gridview

if (e.CommandName == "View")
        {
            ImageButton lb = (ImageButton)e.CommandSource;
            GridViewRow gvr = (GridViewRow)lb.NamingContainer;
            string id = (string)gvdetails.DataKeys[gvr.RowIndex].Value;
            Session["applciationid"] = id;
            DataSet ds = obj1.GetCompanyUserDetails(id);
            string usertype = ds.Tables[0].Rows[0]["Applicanttype"].ToString();

            if (usertype == "Individual")
            {
                Session["applciationid"] = id;
                Response.Redirect("default.aspx");
            }
            if (usertype == "Company")
            {
                Session["applciationid"] = id;
                Response.Redirect("default.aspx");

            }
        }