Ajax调用webmethod在asp.net中未成功

Question

i have an ajax request in a page say Test.aspx

  $.ajax({
                type: "POST",
                url: "Test.aspx/TestMethod",
                data: "{ 'Parameter':'Parameter'}",
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: function (res) {
                    alert('success');
                },
                error: function (xhr, ajaxOptions, thrownError) {
                    alert('error getting Regions');
                }
            });

and in the code behind

   [WebMethod()]
    public static string TestMethod(string Parameter)
    {
      return "teststring";
    }

Issue is control is not going in to success inside ajax, any idea?''

Answer 1

Testtry this

$.ajax({
                type: "POST",
                url: "Test.aspx/TestMethod",
                data: "{ 'Parameter':'Parameter'}",
                contentType: "application/json; charset=utf-8",
                success: function (res) {

                    var s = JSON.stringify(res);
                    alert(s);
                },
                error: function () {
                    alert('error getting Regions');
                }
            });

Answer 2

There are few things you need to make sure you are doing.

First thing you need to add script manager with enable page method property true like below.

<asp:ScriptManager ID="scriptManager" runat="server" EnablePageMethods="true">
</asp:ScriptManager>

See my blog post about How to call ASP.Net page method with jQuery

Check the Page URL and everything. It should be correct and should be exactly same as page name and method name as it is case sensitive.

Check parameter also. There is another good post with parameter is also below for your reference.

http://www.aspsnippets.com/Articles/Call-ASPNet-Page-Method-using-jQuery-AJAX-Example.aspx