C#，ASP.NET 画面上显示数据

aspx:
<asp:datagrid id="dgrdData" runat="server" PagerStyle-HorizontalAlign="Right" AutoGenerateColumns="False" AllowSorting="True" DataKeyField="参数字段">
  <...>
  <Columns>
    <asp:TemplateColumn>
      <...>
      <ItemTemplate>
        <asp:CheckBox ID="chkID" runat="server" />
      </ItemTemplate>
    </asp:TemplateColumn>
    <asp:HyperLinkColumn  ...>
  </Columns>
</asp:datagrid>

cs:
                       
try
{
  foreach (DataGridItem i in this.dgrdData.Items)
  {
    CheckBox inChk = (CheckBox)i.FindControl("chkID");
    if (inChk.Checked)
    {
      ...   
    }
  }
  ...
}
catch(SqlException ex)
{
...
}