C#解决ajaxs跨域问题

在web.config中的<system.webServer>接点下面配置

<system.webServer>

    <httpProtocol>

          <customHeaders>

            <clear />

            <add name="Access-Control-Allow-Methods" value="OPTIONS,POST,GET" />

            <add name="Access-Control-Allow-Headers" value="x-requested-with,content-type" />

            <add name="Access-Control-Allow-Origin" value="*" />

          </customHeaders>

    </httpProtocol>

    <directoryBrowse enabled="true" />

  </system.webServer>