dategrid的ItemCommand问题
<asp:TemplateColumn HeaderText="操作">
<ItemTemplate>
<asp:Button ID="btndel" CommandName="delete" Runat="server" CommandArgument='<%#DataBinder.Eval(Container.DataItem,"id") %>' Text="删除">
</asp:Button>
</ItemTemplate>
</asp:TemplateColumn>
不能触发ItemCommand的事件!怎么回事啊?