asp.net web development

protected void gvclass_RowUpdating1(object sender, GridViewUpdateEventArgs e)
        {
            classinfo infoclass = new classinfo();
            classsp spclass = new classsp();
            GridViewRow row = gvclass.Rows[e.RowIndex];
            infoclass.classId = decimal.Parse(gvclass.DataKeys[e.RowIndex].Value.ToString());
            infoclass.className = ((TextBox)row.FindControl("txtICLassName")).Text;
            infoclass.noOfSeats = int.Parse(((TextBox)row.FindControl("txtISeats")).Text);
            int a = spclass.ClassEdit(infoclass);
            gvclass.EditIndex = -1;
            gridfill();          
        }