c# json使用集

            // CS.Json; net 4.0
            var data = new  JsonObject();
            data.Add("cart_id", 123456);
            data.Add("item_count", 8);

            var items = new JsonArray();
            for (int i = 0; i < 8; i++) {
                var node = new CS.Json.JsonObject();
                node.Add("item_name", "项目名称");
                node.Add("item_price", "价格");
                items.Add(node);
            }
            data.Add("items", items);
            Response.Write(JsonConvert.SerializeObject(data));



            //using Newtonsoft.Json; net 2.0
            StringBuilder sb = new StringBuilder();
            StringWriter sw = new StringWriter(sb);
            using (JsonWriter jsonWriter = new JsonTextWriter(sw))
            {
                JsonSerializer ser = new JsonSerializer();

                jsonWriter.Formatting = Formatting.Indented;
                jsonWriter.WriteStartObject();

                jsonWriter.WritePropertyName("CPU");
                jsonWriter.WriteValue("Intel");
                jsonWriter.WritePropertyName("PSU");
                jsonWriter.WriteValue("500W");
                jsonWriter.WritePropertyName("Drives");

                jsonWriter.WriteStartArray();
                for (int i = 1; i <= 8; i++) {
                    jsonWriter.WriteStartObject();

                    jsonWriter.WritePropertyName("num");
                    ser.Serialize(jsonWriter,i.ToString());

                    jsonWriter.WriteEndObject();

                }
                jsonWriter.WriteEndArray();

                jsonWriter.WriteStartArray();
                jsonWriter.WriteValue("DVD read/writer");
                jsonWriter.WriteComment("(broken)");
                jsonWriter.WriteValue("500 gigabyte hard drive");
                jsonWriter.WriteValue("200 gigabype hard drive");
                jsonWriter.WriteEndArray();

                jsonWriter.WriteEndObject();
            }
            Response.Write(sb.ToString());





            //using LitJson; net 2.0
            //序列化 demo1
            JsonData data = new JsonData();
            data["name"] = "peiandsky";
            data["age"] = 28;
            data["sex"] = "male";
            var items = new JsonData();
            for (int i = 0; i < 8; i++)
            {
                var node = new JsonData();
                node["item_num"] =  i.ToString();
                items.Add(node);
            }
             data["items"] =items;
            string json1 = data.ToJson();
            Response.Write(json1+ Environment.NewLine);


            //序列化 demo2
            JsonWriter writer2 = new JsonWriter();
            writer2.WriteObjectStart();
            writer2.WritePropertyName("book");
                writer2.WriteObjectStart();
                writer2.WritePropertyName("title");
                writer2.Write("android game!");
                writer2.WritePropertyName("author");
                writer2.Write("pei");
                writer2.WritePropertyName("bookdetail");
                    writer2.WriteObjectStart();
                    writer2.WritePropertyName("pages");
                    writer2.Write(429);
                    writer2.WritePropertyName("about");
                    writer2.Write(null);
                    writer2.WriteObjectEnd();
                writer2.WriteObjectEnd();
            writer2.WritePropertyName("items");
                writer2.WriteArrayStart();
                for (int i = 1; i <= 8; i++) {
                    writer2.WriteObjectStart();
                    writer2.WritePropertyName("item_num");
                    writer2.Write(i);
                    writer2.WriteObjectEnd();
                }
                writer2.WriteArrayEnd();
            writer2.WriteObjectEnd();
            Response.Write(writer2.ToString() + Environment.NewLine);

            //反序列化 demo
            JsonData pa = JsonMapper.ToObject(@"{""items"":[{""num"":""001""},{""num"":""002""}]}");

            for (int i = 0; i < pa["items"].Count; i++)
            {
                Response.Write(pa["items"][i]["num"] + Environment.NewLine);

            }