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