IE 错误"doPostBack is undefined"

IE 异常"_doPostBack is undefined"

Web Server可能由于.Net 2 和.Net 4没有正确安装，导致IE10+的浏览器没有被正确识别，这时需要改变Server的浏览器文件：

1. 找到：

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\Browsers

2. 打开ie.browser文件

添加：

<browser id="IE11Preview" parentID="Mozilla">
    <identification>
        <userAgent match="Trident/(?'layoutVersion'\d+).*rv:(?'revision'(?'major'\d+)(\.(?'minor'\d+)?))" />
        <userAgent nonMatch="MSIE" />
    </identification>

    <capabilities>
        <capability name="browser"              value="IE" />
        <capability name="layoutEngine"         value="Trident" />
        <capability name="layoutEngineVersion"  value="${layoutVersion}" />
        <capability name="isColor"              value="true" />
        <capability name="screenBitDepth"       value="8" />
        <capability name="ecmascriptversion"    value="3.0" />
        <capability name="jscriptversion"       value="6.0" />
        <capability name="javascript"           value="true" />
        <capability name="javascriptversion"    value="1.5" />
        <capability name="w3cdomversion"        value="1.0" />
        <capability name="ExchangeOmaSupported" value="true" />
        <capability name="activexcontrols"      value="true" />
        <capability name="backgroundsounds"     value="true" />
        <capability name="cookies"              value="true" />
        <capability name="frames"               value="true" />
        <capability name="javaapplets"          value="true" />
        <capability name="supportsCallback"     value="true" />
        <capability name="supportsFileUpload"   value="true" />
        <capability name="supportsMultilineTextBoxDisplay" value="true" />
        <capability name="supportsMaintainScrollPositionOnPostback" value="true" />
         <capability name="supportsVCard"        value="true" />
        <capability name="supportsXmlHttp"      value="true" />
        <capability name="tables"               value="true" />
        <capability name="supportsAccessKeyAttribute"    value="true" />
        <capability name="tagwriter"            value="System.Web.UI.HtmlTextWriter" />
        <capability name="vbscript"             value="true" />
        <capability name="revmajor"             value="${major}" />
        <capability name="revminor"             value="${minor}" />
    </capabilities>
</browser>

关于此问题的其他解决方案链接：

http://stackoverflow.com/questions/15273618/ie10-script5009-dopostback-is-undefined

http://www.hanselman.com/blog/BugAndFixASPNETFailsToDetectIE10CausingDoPostBackIsUndefinedJavaScriptErrorOrMaintainFF5ScrollbarPosition.aspx

http://stackoverflow.com/questions/19783852/asp-net-on-net-4-causing-ie11-throw-dopostback-is-undefined-javascript-error

http://stackoverflow.com/questions/18009636/crosspostback-ajax-controls-and-asp-net-generated-postbacks-work-for-net-4-5/19203518#19203518

IE 错误"doPostBack is undefined"

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