Label控件经过后台赋值失败

using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Text;using FN.CMS.Utility;using FN.CMS.Entities;using FN.CMS.Operator;namespace FN.CMS{    public partial class NewsMore : System.Web.UI.Page    {  protected void Page_Load(object sender, EventArgs e)        {          this.Label1.Text="求购";//这里赋得值在前台没有反映啊，this点居然出不来Label1，怎么回事了，去掉外面的面命空间就可以，这是为什么？       ｝｝｝

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Adm_New_SerDJ_Edit.aspx.cs"    Inherits="ServicePlatform.adm.Adm_New_SerDJ_Edit" StylesheetTheme="WccsTheme" %>看看页面这里的命名空间跟后台是否一致
------解决方案--------------------------------------------------------
查看一下aspx   aspx.cs   aspx.cs   aspx.designer.cs三个文件的命名空间是否一样。。
------解决方案--------------------------------------------------------
检查你的label是否为服务器控件，再检查a.aspx.designer.cs中是否已经注册了这个控件