public void delete(object sender, GridViewDeleteEventArgs e)
{
int id = Convert.ToInt32(gv1.Rows[e.RowIndex].Cells[4].Text);
SqlConnection conn = new SqlConnection(str_con);
conn.Open();
SqlCommand cmd1 = new SqlCommand("DeleteInfo", conn);
cmd1.CommandType = CommandType.StoredProcedure;
cmd1.Parameters.Add("@s_id", SqlDbType.Int).Value = id;
cmd1.ExecuteNonQuery();
BindData();
conn.Close();
}