$.ajax not calling WebService

Question

i am new in jquery ajax.i want to call web service but in not working. this is my jquery code.

$(document).ready(function () {
             $('#TxBx_BasicSalary').focusout(function () {
                 var EmployeeId = $('#Hid_EmpID').val();

                 $.ajax({
                     type: "POST",
                     cache: false,
                     contentType: "application/json; charset=utf-8",
                     url: '/WebService/IncDedWebService.asmx/GetInceDed',
                     data: JSON.stringify({ id: EmployeeId }),
                     dataType: 'json',
                     success: function (data) {
                         alert("")

                     },
                     error: function () { alert("error"); }



                 });

             });

this is WebService Method.

 [WebMethod]
    [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
    public string GetInceDed(int id)
    {
        ClsSalary salary = new ClsSalary();
        //var abc  salary=.GetIncDedByEmpId(id);

        var serializer = new JavaScriptSerializer();
        var json = serializer.Serialize(salary.GetIncDedByEmpId(id));
        return json;

    }

this is not working when ever i call.it execute error portion. please help me.what i did wrong.

Answer 1

You haven't posted the exact error message, but there are a couple of things to look for:

1. Note that you've specified POST in your $.ajax call, whereas your ScriptMethod has UseHttpGet = true. I've assumed POST.

2. The class containing the Web / Script methods must have the [System.Web.Script.Services.ScriptService] in order to be callable from ajax (as per the comment added by the asmx code Template)

The following server code works for me:

[WebService(Namespace = "http://YourNameSpaceGoesHere/")]
[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 IncDedWebService : System.Web.Services.WebService
{
    [WebMethod]
    [ScriptMethod(UseHttpGet = false, ResponseFormat = ResponseFormat.Json)]
    public string GetInceDed(int id)
    {
        ClsSalary salary = new ClsSalary();
        //var abc  salary=.GetIncDedByEmpId(id);

        var serializer = new JavaScriptSerializer();
        var json = serializer.Serialize(new ClsSalary
                                            {
                                              Amount   = 1234,
                                              Id = 123,
                                              Name = "Basic Salary"
                                            });
        return json;
    }
}

public class ClsSalary
{
    public int Id { get; set; }
    public string Name { get; set; }
    public decimal Amount { get; set; }
}

The json returned is:

{"d":"{\"Id\":123,\"Name\":\"Basic Salary\",\"Amount\":1234}"}

Answer 2

try these changes:

$(document).ready(function () {
             $('#TxBx_BasicSalary').focusout(function () {
                 var EmployeeId = $('#Hid_EmpID').val();

             $.ajax({
                 type: "POST",
                 cache: false,
                 contentType: "application/json; charset=utf-8",
                 url: '/WebService/IncDedWebService.asmx/GetInceDed',
                 data: '{ "id": "' + EmployeeId + '" }', //THIS LINE
                 dataType: 'json',
                 success: function (data) {
                     var emp = $.toJson(data.d); //THIS
                     alert(emp.IncDeb.EmpID); //AND THIS

                 },
                 error: function () { alert("error"); }



             });

         });

this is WebService Method.

[WebMethod]
    [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
    public string GetInceDed(int id)
    {
        ClsSalary salary = new ClsSalary();
        var abc  salary=.GetIncDedByEmpId(id);
        string json = "{\"IncDeb\":[\"EmpId\":\"" + abc.EmpId +"\"]"; //And you have to keep going with the other members  
        return json;

    }