#region Create (从零创建)

        public static string CreateFromZero()

        {

            StringBuilder jsonText = new StringBuilder();

            StringWriter sw = new StringWriter(jsonText);

            using (JsonWriter writer = new JsonTextWriter(sw))

            {

                writer.Formatting = Formatting.None;

                writer.WriteStartObject();//{

                #region children

                writer.WritePropertyName("children");

                writer.WriteStartArray();//[ 

                writer.WriteStartObject();//{

                writer.WritePropertyName("children");

                writer.WriteStartArray();//[ 

                writer.WriteStartObject();//{

                writer.WritePropertyName("organizationCode");

                writer.WriteValue("grandson");

                writer.WritePropertyName("organizationName");

                writer.WriteValue("孙子节点");

                writer.WriteEndObject();//}  

                writer.WriteEndArray();//] 

                writer.WritePropertyName("organizationCode");

                writer.WriteValue("son");

                writer.WritePropertyName("organizationName");

                writer.WriteValue("子节点");

                writer.WriteEndObject();//}  

                writer.WriteEndArray();//]

                #endregion

                writer.WritePropertyName("organizationCode");

                writer.WriteValue("root");

                writer.WritePropertyName("organizationName");

                writer.WriteValue("根节点");

                writer.WriteEndObject();//}  

            }

            return jsonText.ToString();

        }

        #endregion

        #region Delete ,Update (删除指定节点 + 在指定节点前后添加 + 修改节点)

        public static string OperateNode()

        {

            string jsonText = CreateFromZero();

            JToken jobject = JObject.Parse(jsonText);

            #region 新节点

            StringBuilder jsonTextNew = new StringBuilder();

            StringWriter sw = new StringWriter(jsonTextNew);

            using (JsonWriter writer = new JsonTextWriter(sw))

            {

                writer.Formatting = Formatting.None;

                writer.WriteStartObject();//{

                writer.WritePropertyName("organizationCode");

                writer.WriteValue("newson");

                writer.WritePropertyName("organizationName");

                writer.WriteValue("新节点");

                writer.WriteEndObject();//}

            }

            #endregion

            JToken jobjectNew = JObject.Parse(jsonTextNew.ToString());

            string[] field = new string[] { "孙子节点" };

            List<JToken> removeNodes = new List<JToken>();

            GetRemoveNodes(jobject, field, ref removeNodes);

            foreach (JToken node in removeNodes)

            {

                JToken nodeObj = node.Parent;

                //nodeObj.Remove();  //删除此节点

                //nodeObj.AddAfterSelf(jobjectNew); //在此节点后添加 json 对象

                //nodeObj.AddBeforeSelf(jobjectNew);//在此节点前添加 json 对象

                nodeObj.Replace(jobjectNew);  //修改此节点, 通过替换实现

            }

            return jobject.ToString();

        }

        private static void GetRemoveNodes(JToken token, string[] fields, ref List<JToken> removeNodes)

        {

            JContainer container = token as JContainer;

            if (container == null) return;

            foreach (JToken el in container.Children())

            {

                JProperty p = el as JProperty;

                if (p != null && fields.Contains(p.Value.ToString()))

                {

                    removeNodes.Add(el);

                }

                GetRemoveNodes(el, fields, ref removeNodes);

            }

        }

        #endregion

        #region Retrieve (查询)

        //官网例子比较好:

        //http://www.newtonsoft.com/json/help/html/QueryingLINQtoJSON.htm

        #endregion