Detect search engine crawler then render snapshot. It prevent Ajax content not indexed issue.

1. Add Seo.Prerender dll reference

2. Add SeoHttpModule in Web Config

   <system.webServer>
     <modules>
       <remove name="SeoModule" />
       <add name="SeoModule" type="Seo.Prerender.SeoHttpModule" />
     </modules>
   </system.webServer>

3. Add <meta name="fragment" content="!"> in every pages

4. Add Prerender.config in project root

   <?xml version="1.0" encoding="UTF-8"?>
   <PreRenderSetting xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
     <CrawlerUserAgents>188bot,188crawler</CrawlerUserAgents>
     <DomainSettings>
       <DomainSetting Domain="default" AccessPath="C:\Agilebet\share\snapshot" ByPassPaths="/"/>
       <DomainSetting Domain="uk.ngstar.sb.com" AccessPath="C:\Agilebet\share\uksnapshot" ByPassPaths="/"/>
     </DomainSettings>
     <MailNotifySetting Enable="false" MailServer="smtp.xuenn.com" Port="25" Recipients="andy.chen@xuenn.com,kid.liu@xuenn.com,joseph.tsai@xuenn.com" Sender="srv.cshhelp@xuenn.com" />
   </PreRenderSetting>

1. Add ?_escaped_fragment_ after request url or modify your useragent to search-engine crawler by chrome-extension
2. Check developer tool - Network - doc to see if HTML document in response is already rendered with AJAX content or not