解决方法：
在项目根目录 App_Browsers 下新建 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】asp.net 项目在 IE 11 下出现 “__doPostBack”未定义 的解决办法,布布扣,bubuko.com
【转】asp.net 项目在 IE 11 下出现 “__doPostBack”未定义 的解决办法
原文：http://www.cnblogs.com/KingStar/p/3770477.html