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POjQuery: Ajax call to asp.net webservice fails, server return 500 error
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  1. POjQuery: Ajax call to asp.net webservice fails, server return 500 error
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    copied!<p>Ok, so I created a test project just to verify that jQuery AJAX works with asp.net service, and it does no problems. I used a default HelloWorld service created in VS studio. I am calling the service via jQuery like this:</p> <p>in Default.aspx:</p> <pre><code>&lt;script language="javascript" type="text/javascript"&gt; $(document).ready(function() { //test web service $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: "TestService.asmx/HelloWorld", data: "{}", dataType: "json", success: function(msg) { alert(msg);}, error: function (XMLHttpRequest, textStatus, errorThrown) { debugger; } }); }); &lt;/script&gt; </code></pre> <p>in TestService.asmx</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Services; namespace WebServiceTestWitJQuery { /// &lt;summary&gt; /// Summary description for TestService /// &lt;/summary&gt; [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [System.ComponentModel.ToolboxItem(false)] // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. [System.Web.Script.Services.ScriptService] public class TestService : System.Web.Services.WebService { [WebMethod] public string HelloWorld() { return "Hello World"; } } } </code></pre> <p>I then proceeded and copied everything exactly as it is in my project and it does not work. I get a 500 server error. </p> <p>I verified following:</p> <ol> <li>web.configs identical</li> <li>pages identical</li> <li>service class identical</li> <li>jquery ajax call identical</li> <li>I can navigate to <a href="http://localhost:3272/TestService.asmx?op=HelloWorld" rel="nofollow noreferrer">http://localhost:3272/TestService.asmx?op=HelloWorld</a> and webservice works fine.</li> </ol> <p>What else?</p>
 

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