[WebMethod]
        public object Get_List()
        {
          
            List<Artist> art = new List<Artist>();
         
            Artist k = new Artist();
            k.artist_id = 0;
            k.artist_name = "Vasq";
            art.Add(k);

            return JsonConvert.SerializeObject(art);
        }

 function artist_fill()
         {
            var params = "{ }";
            $.ajax({
                type: "POST",
                url: "select_service.asmx/Get_List",
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                data: params,
                success:GetSuccess              

            });
        }

function GetSuccess(result) {
             
         var obj = eval('('+result+')'); 
}

return JsonConvert.SerializeObject(art,Formatting.Indented);

System.Web.Script.Serialization.JavaScriptSerializer oSerializer = new System.Web.Script.Serialization.JavaScriptSerializer();
return oSerializer.Serialize(art);