what is the analogue of property 'Externalcallbackpage'?

[Valera]

what is the analogue of property 'Externalcallbackpage'
in new version?

[Rosi]

Hello Valera,

In RadComboBox for ASP.NET AJAX the ExternallCallBackPage mechanism is no longer needed.You can simply define the ItemsRequested event in the same (parent) page. It should work as expected.

Also the control could make a request to a Web Service.

Please review the following for more information:

• Loading Items from a Web Service Help Article
  
• Populate from WebService Online Example

I hope this helps.


All the best,
Rosi
the Telerik team

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[Valera]

I use Url Rewriting in my project like this (simplified version):

public virtual IHttpHandler GetHandler(HttpContext context, String requestType, String url, String pathTranslated)
        {
            url = HttpUtility.UrlDecode(url);
            if (url.Equals("/search/"))
            {
                string targetUrl = "/Search.aspx";
                return PageParser.GetCompiledPageInstance(targetUrl, context.Server.MapPath(targetUrl), context);
           }
}


Search.aspx contains multiple comboboxes.
OnItemsRequested cannot post an AJAX request and returns a javascript error:

[Exception... "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIXMLHttpRequest.open]"  nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)"  location: "JS frame :: http://test/WebResource.axd?d=K0OWJcgTCXpun5romeS0Fg2&t=633319519957187500 :: WebForm_DoCallback :: line 85"  data: no]
http://test/ScriptResource.axd?d=yrpPTO0G2xX8B6oO7Lr5xvu247QrFxFyGVyPpJOO73Z9w4pxTxs8VmHthTBrqU6S0if0mR-afdUFsHyrnAApsA2&t=633583814480000000
Line 655

You can download a complete project here:
http://xaf.cmsplanet.ru/delight/mymulticombo.zip

Previous versions of RadCombobox (2.8.2.0) worked fine.

How can I resolve the problem?
Thank you.

Valera.