Repeater 的ItemCommand事件不响应-----我遇到的诡异的问题（已解决）-优快云博客

本文链接：https://blog.youkuaiyun.com/wangrumeng/article/details/1803248

今天碰到一个页面，Repeater的Itemcommand事件死活不响应，网上搜了一搜，问的人还真多，可能解决的很少，估计是各有各的原因。像其他人所说的什么事件没有注册啊，ispostback没有判断啊等等，通通都不属于我存在的问题。我当时很是奇怪，因为我弄了个测试页面，上面只有一个repeater，没有其他任何东西，这个repeater就能响应的好好的。所以问题还是出现在那个页面上。经过反复试验，终于有了一个惊人的发现：
原来，页面上包含一个用户控件head011，内容大致如下

< script language ="javascript" type ="textjavascript" >

var domainroot="www.sina.com.cn"// 你的网站域名

　　function Gsitesearch(curobj){

　　curobj.q.value="site:"+domainroot+" "+curobj.qfront.value

　　}

</ script >

< form action ="http://www.google.com/search" method ="get" onSubmit ="Gsitesearch(this)" > 注意此处很关键

< br >

< table width ="765" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="250" >< img src ="images/l001.gif" width ="250" height ="61" ></ td >

< td width ="510" valign ="bottom" >< table width ="0" border ="0" align ="right" cellpadding ="0" cellspacing ="0" >

< tr >

< td >

  < a href ="index.aspx" class ="ch007" > 首页 </ a > < a href ="lxwm.aspx" class ="ch007" > |

联系我们 </ a > < a href ="yqlj.aspx" class ="ch007" ></ a >

</ td >

</ tr >

</ table >

</ td >

</ tr >

</ table >

< table width ="0" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td >< img src ="images/l002.gif" width ="768" height ="29" ></ td >

</ tr >

</ table >

< table width ="768" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="247" height ="23" background ="images/l003.gif" >   </ td >

< td width ="307" background ="images/l003.gif" >< a href ="gywm_gsjj.aspx" >< img src ="images/l019.gif" width ="62" height ="23" border ="0" ></ a >< a href ="xw_lb.aspx" >< img src ="images/l020.gif" width ="75" height ="23" border ="0" ></ a >< a href ="tzzgx_llwm.aspx" >< img src ="images/l021.gif" width ="86" height ="23" border ="0" ></ a >< a href ="ywjs.aspx" >< img src ="images/l022.gif" width ="60" height ="23" border ="0" ></ a ></ td >

< td width ="64" background ="images/l003.gif" >< select name ="select" size ="1" class ="table001" >

< option selected > 标题 </ option >

< option > 内容 </ option >

< option > 作者 </ option >

</ select ></ td >

< p >

< td width ="110" background ="images/l003.gif" >< input name ="q" type ="hidden" >< input name ="qfront" type ="text" class ="table002" value ="搜索内容" size ="20" ></ td >

< td width ="40" background ="images/l003.gif" >< input type ="submit" class ="table003" value ="go" ></ td >

</ p >

</ tr >

</ table >

</ form >

而出问题的页面大致如下：

<% @ Register TagPrefix="uc1" TagName="down02" Src="Controls/down02.ascx" %>

<% @ Register TagPrefix="uc1" TagName="left01" Src="Controls/left01.ascx" %>

<% @ Register TagPrefix="uc1" TagName="head01" Src="Controls/head01.ascx" %>

<% @ Register TagPrefix="uc1" TagName="meta01" Src="Controls/meta01.ascx" %>

<% @ Register TagPrefix="uc1" TagName="title01" Src="Controls/title01.ascx" %>

<% @ Page CodeBehind="xzym.aspx.cs" Language="c#" AutoEventWireup="false" Inherits="Exhibition.web.xzym" %>

< HTML >

< HEAD >

< uc1:meta01 id ="meta011" runat ="server" ></ uc1:meta01 >

< uc1:title01 id ="title011" runat ="server" ></ uc1:title01 >

< link href ="ch.css" rel ="stylesheet" type ="text/css" >

</ HEAD >

< body topmargin ="0" >

< form id ="Form1" runat ="server" method ="post" > 注意此处很关键

< uc1:head01 id ="head011" runat ="server" ></ uc1:head01 >注意此处很关键

< table width ="0" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td >< img src ="images/l002.png" width ="767" height ="138" ></ td >

</ tr >

</ table >

< table width ="767" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="190" valign ="top" bgcolor ="#f3f3f3" >

< uc1:left01 id ="left011" runat ="server" ></ uc1:left01 >

</ td >

< td width ="580" valign ="top" >< table width ="100%" height ="33" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="580" height ="33" background ="images/l034.gif" >   < img src ="images/l017.gif" width ="10" height ="11" >< a href ="index.aspx" class ="ch003" > 首页 > </ a >< a href ="#" class ="ch008" >

下载页面 </ a ></ td >

</ tr >

</ table >

< br >

< table width ="90%" height ="26" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="84%" background ="../images/ch_l_063.gif" class ="ch001" >   < span class ="ch003" >< strong > 资料下载

: </ strong ></ span ></ td >

< td width ="16%" background ="../images/ch_l_063.gif" class ="ch004" > 点击下载 </ td >

</ tr >

</ table >

< asp:Repeater id ="Repeater1" runat ="server" >

< HeaderTemplate >

< table width ="90%" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td align ="center" valign ="top" background ="../images/ch_l_066.gif" >

</ HeaderTemplate >

< ItemTemplate >

< table width ="511" height ="65" border ="0" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="429" height ="65" align ="left" class ="ch007" > <% # DataBinder.Eval(Container, "DataItem.FileDownName") %> ( <% # DataBinder.Eval(Container, "DataItem.FileSize") %> ) </ td >

< td width ="82" align ="center" >< asp:ImageButton id ="lbtn_download2" runat ="server" ImageUrl ="../images/ch_l_067.gif" Width ="35" Height ="28" BorderWidth ="0" CommandName ="download" CommandArgument ='<%# DataBinder.Eval(Container, "DataItem.FileID")% > '> </ asp:ImageButton >< span class ="ch005" >< br />

Download </ span ></ td >

</ tr >

</ table >

</ ItemTemplate >

< AlternatingItemTemplate >

< table width ="511" height ="65" border ="0" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="429" height ="65" align ="left" class ="ch007" > <% # DataBinder.Eval(Container, "DataItem.FileDownName") %> ( <% # DataBinder.Eval(Container, "DataItem.FileSize") %> ) </ td >

< td width ="82" align ="center" >< asp:ImageButton id ="ibtn_download1" runat ="server" ImageUrl ="../images/ch_l_068.gif" Width ="35" Height ="28" BorderWidth ="0" CommandName ="download" CommandArgument ='<%# DataBinder.Eval(Container, "DataItem.FileID")% > '> </ asp:ImageButton >< span class ="ch005" >< br />

Download </ span ></ td >

</ tr >

</ table >

</ AlternatingItemTemplate >

< FooterTemplate >

</ td >

</ tr >

</ table >

</ FooterTemplate > </ asp:Repeater >

< table width ="0" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td >< img src ="../images/dna01.gif" width ="500" height ="9" ></ td >

</ tr >

</ table >

< table width ="0" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td >< img src ="../images/ch_l_056.gif" width ="550" height ="10" ></ td >

</ tr >

</ table >

</ td > </ tr > </ table >

< uc1:down02 id ="down021" runat ="server" ></ uc1:down02 >

</ form >

</ body >

</ HTML >

这样的两个分别都要提交的FROM的结构，存在问题，导致了Itemcommand的事件不能响应。我虽然找到了原因，但并不知道原理是什么，还请高手赐教，不胜感激。
所以针对我的这个页面的问题来说，就很好解决了，把页面改成如下的结构，问题就迎刃而解了：

<% @ Register TagPrefix="uc1" TagName="down02" Src="Controls/down02.ascx" %>

<% @ Register TagPrefix="uc1" TagName="left01" Src="Controls/left01.ascx" %>

<% @ Register TagPrefix="uc1" TagName="head01" Src="Controls/head01.ascx" %>

<% @ Register TagPrefix="uc1" TagName="meta01" Src="Controls/meta01.ascx" %>

<% @ Register TagPrefix="uc1" TagName="title01" Src="Controls/title01.ascx" %>

<% @ Page CodeBehind="xzym.aspx.cs" Language="c#" AutoEventWireup="false" Inherits="Exhibition.web.xzym" %>

< HTML >

< HEAD >

< uc1:meta01 id ="meta011" runat ="server" ></ uc1:meta01 >

< uc1:title01 id ="title011" runat ="server" ></ uc1:title01 >

< link href ="ch.css" rel ="stylesheet" type ="text/css" >

</ HEAD >

< body topmargin ="0" >

< uc1:head01 id ="head011" runat ="server" ></ uc1:head01 > 注意此处很关键---------将这句话提到FORM的外面去

< form id ="Form1" runat ="server" method ="post" > 注意此处很关键

< table width ="0" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td >< img src ="images/l002.png" width ="767" height ="138" ></ td >

</ tr >

</ table >

< table width ="767" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="190" valign ="top" bgcolor ="#f3f3f3" >

< uc1:left01 id ="left011" runat ="server" ></ uc1:left01 >

</ td >

< td width ="580" valign ="top" >< table width ="100%" height ="33" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

下载页面 </ a ></ td >

</ tr >

</ table >

< br >

< table width ="90%" height ="26" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="84%" background ="../images/ch_l_063.gif" class ="ch001" >   < span class ="ch003" >< strong > 资料下载

: </ strong ></ span ></ td >

< td width ="16%" background ="../images/ch_l_063.gif" class ="ch004" > 点击下载 </ td >

</ tr >

</ table >

< asp:Repeater id ="Repeater1" runat ="server" >

< HeaderTemplate >

< table width ="90%" border ="0" align ="center" cellpadding ="0" cellspacing ="0" >

< tr >

< td align ="center" valign ="top" background ="../images/ch_l_066.gif" >

</ HeaderTemplate >

< ItemTemplate >

< table width ="511" height ="65" border ="0" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="429" height ="65" align ="left" class ="ch007" > <% # DataBinder.Eval(Container, "DataItem.FileDownName") %> ( <% # DataBinder.Eval(Container, "DataItem.FileSize") %> ) </ td >

Download </ span ></ td >

</ tr >

</ table >

</ ItemTemplate >

< AlternatingItemTemplate >

< table width ="511" height ="65" border ="0" cellpadding ="0" cellspacing ="0" >

< tr >

< td width ="429" height ="65" align ="left" class ="ch007" > <% # DataBinder.Eval(Container, "DataItem.FileDownName") %> ( <% # DataBinder.Eval(Container, "DataItem.FileSize") %> ) </ td >