jQuery Ajax发布数据查询

Question

i have a doubt in jquery ajax data format. what is the data type of user data when passing from client to server? . if data is passing like data: { // user data} giving 500 error. but if passing like data:'{}' or data:"{}" giving result as success. do i need to enclose the data between '' or "" ?

 $.ajax({
                type: "POST",
                url: "Contact.aspx/add",
                dataType: "json",
                data: '{ "Data": "hii" }',
                contentType: "application/json; charset=utf-8",
                success: function (response) {

                },

                error: function (msg) {
                    alert(msg.status);
                }
            });
       ------c#-------
      [WebMethod]
    public static void add(string Data)
    {
    }

Answer 1

you need to use JSON.stringify to stringify the obj data.

var jsonData = JSON.stringify({ "Data": "hii" }); 
$.ajax({
                    type: "POST",
                    url: "Contact.aspx/add",
                    dataType: "json",
                    data: jsonData,
                    contentType: "application/json; charset=utf-8",
                    success: function (response) {

                    },

                    error: function (msg) {
                        alert(msg.status);
                    }
                });
           ------c#-------
          [WebMethod]
        public static void add(string Data)
        {
        }