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Asked: 2026-05-11T08:18:26+00:00

I have a simple webmethod on an asp.net 2.0 application (using the 1.0 extensions

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I have a simple webmethod on an asp.net 2.0 application (using the 1.0 extensions not the 3.5 ajax extensions). I’m attempting to call the method from jQuery and when I do it as the countless examples show on the Internet and here on SO, I get an Internal Server Error message returned.

Here’s my current code:

[WebMethod] [ScriptMethod(ResponseFormat=ResponseFormat.Json)] public string Select(string login) {     UserProfile profile = UserProfile.GetUserProfile(login);      return '{ FirstName: '' + profile.FirstName + '', ' +              'LastName: '' + profile.LastName + '', ' +              'EmailAddress: '' + profile.EmailAddress + '', ' +              'PhoneNumber: '' + profile.PhoneNumber + '' }';  }

And now the jquery:

$.ajax({     type: 'POST',     url: 'Services/ProfileService.asmx/Select',     dataType: 'json',     data: '{'login':'DOMAIN%5CUSER1'}',     contentType: 'application/json; charset=utf-8',     success: function(msg){ alert(msg); },     error: function(xhr){ alert(xhr.statusText);}      });

The webservice is decorated with the [ScriptService] attribute as well. If I comment out the contentType, change the dataType to text, and change the data to be a query string (name=value), I get the XML returned appropriately.

Where am I going wrong?

UPDATE: I am using jQuery v1.3.1 and testing in both IE6 and Firefox 3. I’m getting consistent results.

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1 Answer

  1. This was a stupid mistake on my part. The issue has been resolved. While I included the reference to the AJAX Extensions, I forgot to rewrite the httphandler for ASMX services to the ScriptHandlerFactory class.

    Adding this resolved the issue.

    Since I have got some emails inquiring about examples or how I fixed the issue, I wrote a blog post about how to do this soup to nuts.

    http://randomactsofcoding.blogspot.com/2009/03/jquery-json-and-asmx-20-services.html

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