IE10 IE11 .Net4 aspnet 验证控件失效 server 2003 IIS6 “__doPostBack”未定义

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        最近部署asp.net网站到windows server 2003下,IE11浏览网站时,验证控件失效!  火狐和欧朋浏览器正常显示。

“查看源”,验证控件未出现。

其它问题:在 IE 11 下<asp:LinkButton> 点击出现 “__doPostBack”未定义”,

原因:

ASP.NET 可能无法辨识出一些浏览器的最新版本,还会经常把它们看做是低级的浏览器。(也就是: 不支持JavaScript。) 
详见: http://blogs.msdn.com/b/scott_hanselman/archive/2011/10/28/asp-net-ie10-dopostback-javascript-ff5.aspx 
本人按照该文所提供的解决办法始终未能得到解决,于是按提示尝试用单个站点的方式修复。 
1、在项目根目录新建: App_Browsers 文件夹

2、在App_Browsers 文件夹下新建文件: “浏览器文件.browser”

     让其与IE11的 UserAgent 匹配,使 .net framework 认识这是一个已知的浏览器,可以正常地向客户端输出脚本。 

在文件里输入以下内容,保存即可。

<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>

转自:转】asp.net项目在IE11下出现“__doPostBack”未定义的解决办法


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