asp.net - 将ASP.NET 3.5更新为4.0-> Sys.WebForms.PageRequestManager未定义

如标题所示，我最近将包含UpdatePanels和类似AJAX技术的ASP.NET 3.5应用程序更新为ASP.NET 4.0。不幸的是，UpdatePanels不再起作用，并且整页的回发使一切都变得毫无意义。

Web.config文件

 <?xml version="1.0"?>
 <configuration>
    <configSections>
        <section name="exceptionHandling" type="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Configuration.ExceptionHandlingSettings, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling"/>
        <section name="loggingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.LoggingSettings, Microsoft.Practices.EnterpriseLibrary.Logging"/>
        <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data"/>
    </configSections>
    <system.net>
        <mailSettings>
            <smtp>
                <network host="localhost"/>
            </smtp>
        </mailSettings>
    </system.net>
    <system.web>
        <!--
             The <authentication> section enables configuration
             of the security authentication mode used by
             ASP.NET to identify an incoming user.
         -->
        <authentication mode="Forms">
            <forms loginUrl="~/Login.aspx" name=".ASPXFORMSAUTH" defaultUrl="~/Administration/SystemEvents.aspx"/>
        </authentication>
        <!--
             The <customErrors> section enables configuration
             of what to do if/when an unhandled error occurs
             during the execution of a request. Specifically,
             it enables developers to configure html error pages
             to be displayed in place of a error stack trace. -->
        <customErrors mode="RemoteOnly" defaultRedirect="~/Error.aspx">
            <error statusCode="401" redirect="~/Unauthorized.aspx"/>
        </customErrors>
        <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/></system.web>
    <system.webServer>
        <validation validateIntegratedModeConfiguration="false"/>
    </system.webServer>
 </configuration>

在Chrome中执行时出现Javascript错误:

Uncaught TypeError: Object function Function() { [native code] } has no method '_registerScript'
Uncaught TypeError: Cannot read property 'PageRequestManager' of undefined

我可能做错了什么？谢谢!

最佳答案

在ScriptManager中设置EnablePartialRendering="false"