asp.net (C#) WebMethod return string

index.cs protected void Page_Load(object sender, EventArgs e) { string abc= GetData("asdf"); Response.Write(abc); } [WebMethod()] public static string GetData(string userid) { /*You can do database operations here if required*/ return "{'aa':'bb'}"; } index.aspx <script type="text/javascript"> $(document).ready(function () { $("#click").click(function () { jQuery.ajax({ url: 'index.aspx/GetData', type: "POST", data: "{'userid2':'1asdf'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function (data) { alert(data.d); } }); }); }); </script> index.cs 에서 return 은 data.d 로 넘겨준다.