Json在asp.net开发中的应用

一、asp.net后台返回Json数据，前台js解析

在后台读取数据，并手动封装成Json格式：

        public ContentResult getUsersByOrgId(int Id)

        {

            DataTable table = UsersLogic.getUsersByOrgId(Id);

            StringBuilder data = new StringBuilder();

            foreach (DataRow row in table.Rows)

            {

                data.Append(",{");

                data.Append("\"UserId\":\"" + row["UserId"] + "\",");

                data.Append("\"UserName\":\"" + row["UserName"] + "\"");

                data.Append("}");

            }



            if (data.Length > 0)

                data = data.Remove(0, 1);

            string result = "{\"items\":[" + Convert.ToString(data) + "]}";

            return Content(result, "application/json");



        }

在前台用js解析，并展示到页面：

    function GetOrgUsers(Id) {

        $.post("/StockManage/Ware/getUsersByOrgId", { Id: Id }, function (data) { 

            var rJson = JSON.parse(JSON.stringify(data));  //转为josn数据

            if (rJson != "" && rJson != null && rJson != "undefined") {

                var htmlData = "";

                for (m = 0; m < rJson.items.length; m++) {

                    var uid = rJson.items[m]["UserId"];

                    var uname = rJson.items[m]["UserName"];

                    htmlData += "<option value='" + uid + "'>" + uname + "</options>";

                }

                $("#Select").html(htmlData);

            }

            return;

        });

    }

二、js封装Json数据，传给后台解析

js封装Json数组：

　　　　　　  var arr = [];

            var jsonObj = {};

            jsonObj.UserId= 2;

            jsonObj.UserName= "Hellow World!";

            jsonObj.Phone= "10086100101";

            arr.push(jsonObj);



            $.post('/UserArea/User/SaveData', { "param": JSON.stringify(arr) }, function (data) {

                Success(data);

            });

ASP.NET后台解析：

        #region 控制器接收数据

        public JsonResult SaveData(string param)

        {

　　　　　　  try

            {

                UserLogic.AddConstruct(param);  return Json(new { Result = "OK", Message = "操作成功" });

                  

            }

            catch (Exception ex)

            {

                return Json(new { Result = "ERROR", Message = ex.Message });

            }

        }

        #endregion



        #region 保存数据到数据库

        public static bool AddConstruct(string json)

        {

            bool status = false;



            try

            {

                JArray jObject = (JArray)JsonConvert.DeserializeObject(json);

                for (int i = 0; i < jObject.Count; i++)

                {

                    User cs = new User();

                    var tmpObj = (JObject)jObject[i];



                    cs.UserId= Convert.Int(tmpObj["UserId"]);

                    cs.UserName= tmpObj["UserName"].ToString();

                    cs.Phone= tmpObj["Phone"].ToString();//向主表插入数据

                    UserContext.Instance.Insert(cs);



                }

                status = true;

            }

            catch

            {

                status = false;

            }

            return status;

        }

        #endregion