DataList1_ItemCommand

DataList1_ItemCommand此事件不响应,奇怪了<asp:datalist id="DataList1" runat="server" Width="636px" RepeatColumns="3" DataKeyField="ID" Font-Size="12px" OnItemDataBound="DataList1_ItemDataBound" OnDeleteCommand="DataList1_DeleteCommand" OnItemCommand="DataList1_ItemCommand">
<ItemTemplate>
<table style="width: 228px; height: 53px">
 <tr>
 <td style="text-align: center">
       <asp:LinkButton ID="LinkButton3" runat="server" CommandName="nrupdate">修改</asp:LinkButton>
       <asp:LinkButton ID="LinkButton4" runat="server" CommandName="delete">删除</asp:LinkButton>
       <asp:LinkButton ID="LinkButton5" runat="server" CommandName="share">共享</asp:LinkButton>
</td>
</tr>
</table>
</ItemTemplate>if (!IsPostBack)
{}<这个已经加过了>if (e.CommandName == "nrupdate")
        {
            Response.Write("123456");
        }
if (e.CommandName == "share")
        {
            Response.Write("654321");
        }
点击修改那个linkbutton能够触发DataList1_ItemCommand事件  
点击共享这个linkbutton不能触发DataList1_ItemCommand事件很是奇怪......大家帮忙看看.