IE11出现"__doPostBack”未定义

　　系统做迁移，在新服务器IIS上部署，部署后的系统在IE8和其他浏览器上显示正常，

　　但是在IE11上显示错乱，并且还会出现"__doPostBack”未定义。

　　1.首先在原服务器又部署了一次，显示正常，排除代码问题和IIS(网站和应用程序池)问题。

　　2.怀疑IIS设置问题，所有设定参数都对比了一遍，设置基本一致。

　　3.代码增加IE7标准模式，未解决

　　<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />

　　4.调试中出现"__doPostBack”未定义，根据这个错误百度出问题的真正原因，

　　 服务器版的.Net40的补丁没有打上，ASP.NET 可能无法辨识出一些浏览器的最新版本

　　1）按照网友的方法，修改C:WindowsMicrosoft.NETFramework64v4.0.30319ConfigBrowsersie.browser，

　　也许可行，但是我这边不行

<browsers>
  <browser id="IE11" parentID="Mozilla">
    <identification>
      <userAgent match="Trident/7.0; rv:(?'version'(?'major'd+)(.(?'minor'd+)?)(?'letters'w*))(?'extra'[^)]*)" />
      <userAgent nonMatch="IEMobile" />
    </identification>
    <capture>
      <userAgent match="Trident/(?'layoutVersion'd+)" />
    </capture>
    <capabilities>
      <capability name="browser"              value="IE" />
      <capability name="layoutEngine"         value="Trident" />
      <capability name="layoutEngineVersion"  value="${layoutVersion}" />
      <capability name="extra"                value="${extra}" />
      <capability name="isColor"              value="true" />
      <capability name="letters"              value="${letters}" />
      <capability name="majorversion"         value="${major}" />
      <capability name="minorversion"         value="${minor}" />
      <capability name="screenBitDepth"       value="8" />
      <capability name="type"                 value="IE${major}" />
      <capability name="version"              value="${version}" />
    </capabilities>
  </browser>
  <!-- Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11,0) like Gecko -->
  <browser id="IE110" parentID="IE11">
    <identification>
      <capability name="majorversion" match="11" />
    </identification>

    <capabilities>
      <capability name="ecmascriptversion"    value="3.0" />
      <capability name="jscriptversion"       value="5.6" />
      <capability name="javascript"           value="true" />
      <capability name="javascriptversion"    value="1.5" />
      <capability name="msdomversion"         value="${majorversion}.${minorversion}" />
      <capability name="w3cdomversion"        value="1.0" />
      <capability name="ExchangeOmaSupported" value="true" />
      <capability name="activexcontrols"      value="true" />
      <capability name="backgroundsounds"     value="true" />
      <capability name="cookies"              value="true" />
      <capability name="frames"               value="true" />
      <capability name="javaapplets"          value="true" />
      <capability name="supportsCallback"     value="true" />
      <capability name="supportsFileUpload"   value="true" />
      <capability name="supportsMultilineTextBoxDisplay" value="true" />
      <capability name="supportsMaintainScrollPositionOnPostback" value="true" />
      <capability name="supportsVCard"        value="true" />
      <capability name="supportsXmlHttp"      value="true" />
      <capability name="tables"               value="true" />
      <capability name="supportsAccessKeyAttribute"    value="true" />
      <capability name="tagwriter"            value="System.Web.UI.HtmlTextWriter" />
      <capability name="vbscript"             value="true" />
    </capabilities>
  </browser>
</browsers>

 　　

　　2) 安装NET插件：http://www.microsoft.com/zh-cn/download/details.aspx?id=28936,安装完成后，还是不行

　　

　　3)在网站目下，新建App_Browsers文件到，新建ie.browser文件，内容如下，问题得到了解决。

　　

<browsers>
    <!-- Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4325) -->
    <browser id="IE6Plus" parentID="IE">
        <identification>
            <capability name="majorversion" match="^[6-9]|d{2,}$" />
        </identification>

        <capabilities>
            <capability name="ecmascriptversion"    value="3.0" />
            <capability name="jscriptversion"       value="5.6" />
            <capability name="javascript"           value="true" />
            <capability name="javascriptversion"    value="1.5" />
            <capability name="msdomversion"         value="${majorversion}.${minorversion}" />
            <capability name="w3cdomversion"        value="1.0" />
            <capability name="ExchangeOmaSupported" value="true" />
            <capability name="activexcontrols"      value="true" />
            <capability name="backgroundsounds"     value="true" />
            <capability name="cookies"              value="true" />
            <capability name="frames"               value="true" />
            <capability name="javaapplets"          value="true" />
            <capability name="supportsCallback"     value="true" />
            <capability name="supportsFileUpload"   value="true" />
            <capability name="supportsMultilineTextBoxDisplay" value="true" />
            <capability name="supportsMaintainScrollPositionOnPostback" value="true" />
            <capability name="supportsVCard"        value="true" />
            <capability name="supportsXmlHttp"      value="true" />
            <capability name="tables"               value="true" />
            <capability name="supportsAccessKeyAttribute"    value="true" />
            <capability name="tagwriter"            value="System.Web.UI.HtmlTextWriter" />
            <capability name="vbscript"             value="true" />
        </capabilities>
    </browser>

    <!-- Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0;) -->
    <browser id="IE6to9" parentID="IE6Plus">
      <identification>
        <capability name="majorversion" match="^[6-9]$" />
      </identification>
    </browser>

    <!-- Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0;) -->
    <browser id="IE7" parentID="IE6to9">
        <identification>
            <capability name="majorversion" match="^7$" />
        </identification>
        <capabilities>
            <capability name="jscriptversion" value="5.7" />
        </capabilities>
    </browser>

    <!-- Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729) -->
    <browser id="IE8" parentID="IE6to9">
        <identification>
            <capability name="majorversion" match="^8$" />
        </identification>
        <capabilities>
            <capability name="jscriptversion" value="6.0" />
        </capabilities>
    </browser>

  <!-- Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729) -->
  <browser id="IE9" parentID="IE6to9">
    <identification>
      <capability name="majorversion" match="^9$" />
    </identification>
    <capabilities>
      <capability name="jscriptversion" value="6.0" />
    </capabilities>
  </browser>

  <!-- Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0) -->
  <browser id="IE10Plus" parentID="IE6Plus">
    <identification>
      <capability name="majorversion" match="d{2,}" />
    </identification>
    <capabilities>
      <capability name="jscriptversion" value="6.0" />
    </capabilities>
  </browser>

  <gateway id="IEbeta" parentID="IE">
        <identification>
            <capability name="letters" match="^([bB]|ab)" />
        </identification>

        <capture>
        </capture>

        <capabilities>
            <capability name="beta"    value="true" />
        </capabilities>
    </gateway>
  
    <browser id="IE11" parentID="Mozilla">
    <identification>
    <userAgent match="Trident/7.0; rv:(?'version'(?'major'd+)(.(?'minor'd+)?)(?'letters'w*))(?'extra'[^)]*)" />
    <userAgent nonMatch="IEMobile" />
    </identification>
    <capture>
    <userAgent match="Trident/(?'layoutVersion'd+)" />
    </capture>
     <capabilities>
       <capability name="browser" value="IE" />
       <capability name="layoutEngine" value="Trident" />
       <capability name="layoutEngineVersion" value="${layoutVersion}" />
       <capability name="extra" value="${extra}" />
       <capability name="isColor" value="true" />
       <capability name="letters" value="${letters}" />
       <capability name="majorversion" value="${major}" />
       <capability name="minorversion" value="${minor}" />
       <capability name="screenBitDepth" value="8" />
       <capability name="type" value="IE${major}" />
       <capability name="version" value="${version}" />
     </capabilities>
     </browser>

     <!-- Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11,0) like Gecko -->
     <browser id="IE110" parentID="IE11">
       <identification>
          <capability name="majorversion" match="11" />
       </identification>

       <capabilities>
           <capability name="ecmascriptversion" value="3.0" />
           <capability name="jscriptversion" value="5.6" />
           <capability name="javascript" value="true" />
           <capability name="javascriptversion" value="1.5" />
           <capability name="msdomversion" value="${majorversion}.${minorversion}" />
           <capability name="w3cdomversion" value="1.0" />
           <capability name="ExchangeOmaSupported" value="true" />
           <capability name="activexcontrols" value="true" />
           <capability name="backgroundsounds" value="true" />
           <capability name="cookies" value="true" />
           <capability name="frames" value="true" />
           <capability name="javaapplets" value="true" />
           <capability name="supportsCallback" value="true" />
           <capability name="supportsFileUpload" value="true" />
           <capability name="supportsMultilineTextBoxDisplay" value="true" />
           <capability name="supportsMaintainScrollPositionOnPostback" value="true" />
           <capability name="supportsVCard" value="true" />
           <capability name="supportsXmlHttp" value="true" />
           <capability name="tables" value="true" />
           <capability name="supportsAccessKeyAttribute" value="true" />
           <capability name="tagwriter" value="System.Web.UI.HtmlTextWriter" />
           <capability name="vbscript" value="true" />
       </capabilities>
     </browser>
 </browsers>