ASP. NET project "__doPostBack" Undefined workaround under IE11

Recently we run a website with user feedback under IE 11 <asp:LinkButton> Click "__doPostBack" is not defined ", after some Google, finally know the reason: ASP. NET may not be able to identify some of the latest version of the browser, They are also often viewed as low-level browsers. (That is, JavaScript is not supported.) ）
see:/HTTP// BLOGS.MSDN.COM/B/SCOTT_HANSELMAN/ARCHIVE/2011/10/28/ASP-NET-IE10-DOPOSTBACK-JAVASCRIPT-FF5.ASPX&NBSP;
I have never been able to obtain the solution I have provided in accordance with this article Resolved, then follow the prompts to try to fix it in a single site. &NBSP;
in the project root directory App _browsers Create a new browser file (. browser) to match the useragent of IE11, so that the. NET Framework recognizes that this is a known browser that can normally output scripts to the client. &NBSP;

Enter the following in the file and save it.

    <Browsers>      <BrowserID= "IE11"ParentID= "Mozilla">      <Identification>      <useragentMatch= "trident\/7.0; RV: (? ') Version ' (? ') Major ' \d+) (\. (? ') Minor ' \d+)?) (?‘ Letters ' \w*)) (? ') Extra ' [^)]*) " />      <useragentNonmatch= "Iemobile" />      </Identification>      <Capture>      <useragentMatch= "trident/(? ') Layoutversion ' \d+) " />      </Capture>       <Capabilities>       <Capabilityname= "Browser"value= "IE" />       <Capabilityname= "Layoutengine"value= "Trident" />       <Capabilityname= "Layoutengineversion"value= "${layoutversion}" />       <Capabilityname= "Extra"value= "${extra}" />       <Capabilityname= "IsColor"value= "true" />       <Capabilityname= "Letters"value= "${letters}" />       <Capabilityname= "MajorVersion"value= "${major}" />       <Capabilityname= "MinorVersion"value= "${minor}" />       <Capabilityname= "ScreenBitDepth"value= "8" />       <Capabilityname= "type"value= "Ie${major}" />       <Capabilityname= "Version"value= "${version}" />       </Capabilities>       </Browser>             <!--mozilla/5.0 (Windows NT 6.3; trident/7.0; rv:11,0) Like Gecko -       <BrowserID= "IE110"ParentID= "IE11">       <Identification>       <Capabilityname= "MajorVersion"Match= "One" />       </Identification>             <Capabilities>       <Capabilityname= "Ecmascriptversion"value= "3.0" />       <Capabilityname= "Jscriptversion"value= "5.6" />       <Capabilityname= "JavaScript"value= "true" />       <Capabilityname= "Javascriptversion"value= "1.5" />       <Capabilityname= "Msdomversion"value= "${majorversion}.${minorversion}" />       <Capabilityname= "W3cdomversion"value= "1.0" />       <Capabilityname= "exchangeomasupported"value= "true" />       <Capabilityname= "ActiveXControls"value= "true" />       <Capabilityname= "Backgroundsounds"value= "true" />       <Capabilityname= "Cookies"value= "true" />       <Capabilityname= "Frames"value= "true" />       <Capabilityname= "Javaapplets"value= "true" />       <Capabilityname= "Supportscallback"value= "true" />       <Capabilityname= "Supportsfileupload"value= "true" />       <Capabilityname= "Supportsmultilinetextboxdisplay"value= "true" />       <Capabilityname= "Supportsmaintainscrollpositiononpostback"value= "true" />       <Capabilityname= "Supportsvcard"value= "true" />       <Capabilityname= "Supportsxmlhttp"value= "true" />       <Capabilityname= "Tables"value= "true" />       <Capabilityname= "SupportsAccesskeyAttribute"value= "true" />       <Capabilityname= "TagWriter"value= "System.Web.UI.HtmlTextWriter" />       <Capabilityname= "VBScript"value= "true" />       </Capabilities>       </Browser>       </Browsers>  

In addition, open the Web site with VS, open the Package Manager console, enter install-package app_browsersupdate Install the update can also

For example:

Pm> Install-package App_browsersupdate
Installing "App_browsersupdate 1.0".
"App_browsersupdate 1.0" was successfully installed.
Adding "App_browsersupdate 1.0" to MyWebsite.
"App_browsersupdate 1.0" was successfully added to MyWebsite.

ASP. NET project "__doPostBack" Undefined workaround under IE11