Ajax调用Web方法在VS2010中不起作用

Question

I'm trying to set up a very simple web method call in VS 2010, and failing miserably. The exact same setup works in VS2008 and I can't figure out where the difference is. The code is as follows:

test.aspx ajax call (I also tried without the localhost):

$(document).ready(function ()
{
    $("#btnAjax").click(function ()
    {
        var testData = "test";
        $.ajax({
            type: "POST",
            url: "http://localhost/test.aspx/Test",
            data: JSON.stringify({ test: testData }),
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function (msg)
            {
                alert("ok");
            },
            error: function (xhr, err)
            {
                alert("readyState: " + xhr.readyState + "\nstatus: " + xhr.status);
                alert("responseText: " + xhr.responseText);
            }
        })
    });
});

test.aspx.cs (breakpoint shows the method is never reached):

    [WebMethod()]
    public static string Test(string test)
    {
        return "xyz";
    }

web.config (I took those from the VS2008 version that works):

<modules>
<remove name="ScriptModule"/>
<add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</modules>
<handlers>
<remove name="WebServiceHandlerFactory-Integrated"/>
<remove name="ScriptHandlerFactory"/>
<remove name="ScriptHandlerFactoryAppServices"/>
<remove name="ScriptResource"/>
<add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
    <add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
    <add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</handlers>

The ready state returned is always 0 and the response text empty; firebug shows the correct data is posted, the response tab shows the page html; I've not had to use the firebug debugger before, so perhaps there's something more I should look at. Console/Net are enabled but I did not see anything glaringly obvious.

I searched a lot but can't find anything that helps or that I haven't tried already. In a word, I don't know where else to look...

Perhaps one pointer might be the fact that I initially tried to implement a WCF service but it kept failing with 'authentication failed' - from what I read it has to with IIS setup, but none of the posts I found worked. Since it does not have to be WCF, I eventually thought I go back to basics, ie this simple web method. I don't know how I could verify if it's an authentication issue or something else. What makes me think this is not is the fact that the VS2008 version works with the exact same server.

Any suggestions are massively appreciated.

Answer 1

got it to work... finally... posting it as an answer in case someone else runs into this

the problem was the call needs async: false, or - at least in my case - it fails on most browsers; it doesn't make sense to me though as to why, so i'll post a separate question, hopefully someone can explain