在C＃中转换JSON对象

Question

The problem is that is not printing anything. I have list of surnames in aspx.cs, and I am trying to parse in JSON object so I can use them in aspx. I think the problem is in the script because when I Response.Write('jsonString') it prints in a correctly JsonFormat .

WebForm1.aspx.cs

I have List of Surnames

public List<String> surname= new List<String>();

and a method that is making the list to jsonString

 public string getJson() {
            JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
            string jsonString = javaScriptSerializer.Serialize(surname);
            return jsonString;
        }  

WebForm1.aspx

this is the script 
 <script>
        $(function () {
            $.ajax({
                url: "WebForm1.aspx/getJson",
                dataType: "json",
                success: function (data) {
                    $("#Label2").append(data + " ");
                }
            });
        });

    </script>

and web contorl

 <asp:Label ID="Label2" runat="server" Text=""></asp:Label>

Answer 1

have tried following line ?

in asp.net you have to get client id and than set your data

$('#<%=Label2.ClientID%>').html(data)

Answer 2

Your WebMethod should be like:

[WebMethod]
public static List<string> getJson()
{
      List<String> surname = YourFunctionForSurnames();
      return surname;
}

Your JavaScript

$(function () {
        $.ajax({
            type:'post',
            url: "WebForm1.aspx/getJson",
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function (data) {
                console.log(data);
                $("#Label2").append(data.d + " ");                    

            }, error: function (XMLHttpRequest, textStatus, errorThrown) {
                alert(XMLHttpRequest + '  ' +textStatus + '  ' + errorThrown);
            }
        });
    });

I testing and working on my machine.

Answer 3

我认为您需要在js中使用对象之前添加JSON序列化，例如JSON.parse（jsonString）;