如何將JS對象的集合發送給ASP.NET API服務？

Question

我想送JavaScript對象的集合，我的API服務，但是服務器接收空的對象列表！

<script> 

    //Collection 
    var Collection = function() { 
     this.count = 0; 
     this.collection = {}; 

     this.add = function (key, item) { 
      if (this.collection[key] != undefined) 
       return undefined; 
      this.collection[key] = item; 
      return ++this.count 
     } 
     this.remove = function (key) { 
      if (this.collection[key] == undefined) 
       return undefined; 
      delete this.collection[key] 
      return --this.count 
     } 
     this.item = function (key) { 
      return this.collection[key]; 
     } 
     this.forEach = function (block) { 
      for (key in this.collection) { 
       if (this.collection.hasOwnProperty(key)) { 
        block(this.collection[key]); 
       } 
      } 
     } 
    } 

// the JavaScript class for food 
    function foodcls(no,qunt,name, cals, carb, fat, prt,unt) { 
     this.no = no; 
     this.qunt = qunt; 
     this.name = name; 
     this.cals = cals; 
     this.carb = carb; 
     this.fat = fat; 
     this.prt = prt; 
     this.unt = unt; 
    } 
// instantiate new obj 
var fod = new foodcls(3, 5, 'SomeName', 300, 180, 100, 20, 'Gram'); 
var fno =333; 


var timCol = new Collection(); 
timCol.add(fno, fod); 

    var urlpaths = '/api/FoodServ'; 
$.ajax({ 
     url: urlpaths, 
     method: "POST", 
     contentType: 'application/json; charset=utf-8', 
     data: JSON.stringify(timCol), 
     success: function (data) { 
// any thing 
} 
}); 

</script> 

代碼在ASP.NET API：

 [HttpPost] 
    public HttpResponseMessage Post(List<foodcls> fods) // Here fods is empty 
    { 
     int rslt=0; 
     string UserId = "sam@am.com";//User.Identity.Name; 
     List<Foods_Meal_TBL> fooditems = new List<Foods_Meal_TBL>(); 
      if (fods.Count()>0) 
      { 
       foreach (foodcls item in fods) 
     { 
      Foods_Meal_TBL fooditem = new Foods_Meal_TBL(); 
      fooditem.FoodNo = item.no; 
      fooditem.Quantity = item.qunt; 
      fooditem.PersonID = UserId; 
fooditems.Add(fooditem); 
     } 
     } 
     rslt = SaveAllItems(fooditems); // rslt Meal No 
     return Request.CreateResponse(HttpStatusCode.OK, rslt); 
    } 

任何幫助嗎？

Answer 1

我發現程轉換來解決這一問題的集合陣列，我知道這是不是最好的解決方案，我希望有人能找到更好的解決方案，避免使用數組，但直到有人給一個更好的答案，我把我的方式來解決這個問題如下： 我已經添加了功能toArr //手段隱蔽採集到數組如下：

//Collection 
var Collection = function() { 
this.count = 0; 
this.collection = {}; 

this.add = function (key, item) { 
    if (this.collection[key] != undefined) 
     return undefined; 
    this.collection[key] = item; 
    return ++this.count 
} 
this.remove = function (key) { 
    if (this.collection[key] == undefined) 
     return undefined; 
    delete this.collection[key] 
    return --this.count 
} 
this.item = function (key) { 
    return this.collection[key]; 
} 
this.forEach = function (block) { 
    for (key in this.collection) { 
     if (this.collection.hasOwnProperty(key)) { 
      block(this.collection[key]); 
     } 
    } 
} 
this.toArr = function (block) { //ToArray 
    var fodarr = []; 
    for (key in this.collection) { 
     if (this.collection.hasOwnProperty(key)) { 
      fodarr.push(this.collection[key]);// block(this.collection[key]); 
     } 
    } 
    return fodarr; 
} 

}

ASP.NET API函數：

[HttpPost] 
     public HttpResponseMessage Post(foodcls[] fods) 

。希望幫助別人的未來...

Answer 2

您可以爲本地收藏轉換你的JSON對象的內部集合添加方法。

var Collection = function() { 
     this.count = 0; 
     this.collection = {}; 

     this.add = function (key, item) { 
      if (this.collection[key] != undefined) 
       return undefined; 
      this.collection[key] = item; 
      return ++this.count 
     } 
     this.remove = function (key) { 
      if (this.collection[key] == undefined) 
       return undefined; 
      delete this.collection[key] 
      return --this.count 
     } 
     this.item = function (key) { 
      return this.collection[key]; 
     } 
     this.toJSON = function(){ 
      return JSON.stringify(this.collection); 
     } 
     this.forEach = function (block) { 
      for (key in this.collection) { 
       if (this.collection.hasOwnProperty(key)) { 
        block(this.collection[key]); 
       } 
      } 
     } 
    } 

希望，這將有所幫助。另外建議：不要使用對象來存儲值，因爲它們是slower then arrays。