Updated ASP.NET 3.5 to 4.0 -> Sys.WebForms.PageReq

问题:

As the title indicates, I recently updated an ASP.NET 3.5 application containing UpdatePanels and similar AJAX technologies to ASP.NET 4.0. Unfortunately, the UpdatePanels work no more and full page postbacks makes it all go south.

Web.config-file

 <?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>

Javascript error upon execution in Chrome:

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

What is there that I could've done wrong? Thank you!

回答1:

I was having trouble with this recently as I was updating an older project and followed your steps above but it was still giving me the same error. I found that I needed to update a line in the web.config file which fixed it.

I changed:

<xhtmlConformance mode="Legacy"/>

to:

<xhtmlConformance mode="Transitional"/>

回答2:

Set EnablePartialRendering="false" in ScriptManager

回答3:

... and I've solved it myself by replacing the UpdatePanels and by removing the scripting managers.