A custom GridView in Asp.Net

custom-gridview-with-link-id

<asp:GridView ID="gvBenhNhan" AutoGenerateColumns="false" runat="server"> 
    <Columns>
        <asp:BoundField HeaderText="Mã bệnh nhân" DataField="MaBenhNhan" />
        <asp:BoundField HeaderText="Tên bệnh nhân" DataField="TenBenhNhan" />
        <asp:BoundField HeaderText="Viện phí" DataField="VienPhi" />
        <asp:BoundField HeaderText="Tên phòng" DataField="TenPhong" />
        <asp:HyperLinkField Text="Sửa" DataNavigateUrlFields="MaBenhNhan" DataNavigateUrlFormatString="~/PL/BenhNhan/22_update.aspx?id={0}" />
        <asp:HyperLinkField Text="Xóa" DataNavigateUrlFields="MaBenhNhan" DataNavigateUrlFormatString="~/PL/BenhNhan/22_delete.aspx?id={0}" />
    </Columns>
</asp:GridView>