I am trying to get the array of json string in jquery ajax function from c# webmethod . I am getting error 500 [on hold]

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I am trying to get the array of json string in jquery ajax function in aspx page from c# webmethod resides in code behind . I am getting error 500 in my jquery alert .

Jquery code:

$(document).ready(function () {
    $.ajax({
        type: 'GET',
        dataType: 'json',
        async: false,
        url: 'MyWebService.asmx/SayHelloJson',
        cache: false,
        contentType: 'application/json; charset=utf-8',
        success: function (data) {
            alert('success');
        },
        error: function (err) {
            alert(err.status);
        }
    });
});

C# code:

<pre lang="cs">[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.Web.Script.Services.ScriptService]
public class MyWebService : System.Web.Services.WebService
{
    [WebMethod]
    [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
    public string SayHelloJson()
    {
        var data = new { Greeting = &quot;Hello&quot;, Name = &quot;test&quot; };

       JavaScriptSerializer js=new JavaScriptSerializer();

        return js.Serialize(data);
    }
}</pre>

Posted 9-Feb-14 5:51am

Member 10582903

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Sampath Lokuge · Answer 1 · 2014-02-09T06:16:00

Please try is as below.

Note:Use Post instead of Get.

$(document).ready(function () {
    $.ajax({
        type: 'POST',
        dataType: 'json',
        async: false,
        url: 'MyWebService.asmx/SayHelloJson',
        cache: false,
        contentType: 'application/json; charset=utf-8',
        success: function (data) {
            alert('success');
        },
        error: function (err) {
            alert(err.status);
        }
    });
});

Check for more info : 3 mistakes to avoid when using jQuery with ASP.NET AJAX