我如何在 Xamarin 中读取两个同名的 json 数据

Posted 2023-04-12

【中文标题】我如何在 Xamarin 中读取两个同名的 json 数据

【英文标题】：How can i read two same name json data in Xamarin

【发布时间】：2021-05-31 12:33:15

【问题描述】：

伙计们，它是我的 json 文件，但你可以看到它有多个名称 - ID 或类似的东西。我在 Xamarin 中有 2 页。在第一页中，我需要从 json 文件的第一部分获取数据。 “ID”-“名称”-“条形码”.... 等等。但是在第二页我需要从 Json 文件中的 CampaignList 中获取数据。但在活动列表部分也有“名称”-“ID”。因此，当我尝试从 CampaignList 程序中获取数据时，会为我提供来自 Root 类的数据。但我需要从 CampaignList 中获取。如何从 CampaignList 获取数据？ 我的 Json 文件：

    
  "ID": 370,
  "Name": "NIVEA Sun F50 Kids Sprey Hassas 200ml",
  "Barcode": "4005900253330",
  "ClassID": 0,
  "PriceSales": 139.13,
  "PriceSalesWithTax": 164.1734,
  "PriceList": 205.26,
  "PriceListWithTax": 242.2068,
  "PricePurchase": 139.13,
  "PricePurchaseWithTax": 164.1734,
  "DiscountSales": 0.0,
  "DiscountOfficial": 0.0,
  "DiscountAdvance": 0.0,
  "DiscountReturn": 0.0,
  "DiscountManual": 0.0,
  "TaxRate": 18,
  "MonthlyPurchaseLimit": 0,
  "UnitCost": 0.0,
  "TermDay": 0,
  "Increase": 0.0,
  "WebPriceSales": 0.0,
  "_PriceSales": 0.0,
  "ProductCompanyID": 0,
  "Company": "NIVEA BIERSDORF",
  "FollowingAmount": 0,
  "CampaignList": [
    
      "ID": 20458,
      "Name": "1A NIVEA KAMPANYALARI",
      "StartDate": "2020-04-13T00:00:00",
      "EndDate": "2020-12-31T00:00:00",
      "Amount": 1,
      "ExtraAmount": 0,
      "MinAmount": 0,
      "Discount1": 10.00,
      "Discount2": 0.00,
      "Discount3": 0.00,
      "Discount4": 0.00,
      "TermDay": 0,
      "CompanyCampaignDetailsID": 0,
      "ProductID": 0,
      "CampaignRate": 0.0,
      "UnitPriceWithDiscountWtihTax": 0.0,
      "UnitPriceAfterExtraAmount": 0.0,
      "UnitPriceWithDiscount": 0.0,
      "RowSummaryWithoutDiscount": 0.0,
      "RowSummary": 0.0,
      "DiscountTotal": 0.0,
      "RowSummaryWithTax": 0.0,
      "RowSummaryTaxAmount": 0.0,
      "RowSummaryPriceSales": 0.0,
      "UnitPriceAfterDiscount": 0.0
    

它在 c# 中

 public class CampaignList
    
        public int ID  get; set; 
        public string Name  get; set; 
        public DateTime StartDate  get; set; 
        public DateTime EndDate  get; set; 
        public int Amount  get; set; 
        public int ExtraAmount  get; set; 
        public int MinAmount  get; set; 
        public double Discount1  get; set; 
        public double Discount2  get; set; 
        public double Discount3  get; set; 
        public double Discount4  get; set; 
        
    
        public class Root
         
        public int ID  get; set; 
        public string Name  get; set; 
        public string Barcode  get; set; 
        public int ClassID  get; set; 
        public double PriceSales  get; set; 
        public double PriceSalesWithTax  get; set; 
        public double PriceList  get; set; 
        public double PriceListWithTax  get; set; 
        public double PricePurchase  get; set; 
        public double PricePurchaseWithTax  get; set; 
        public double DiscountSales  get; set; 
        public double DiscountOfficial  get; set; 
        public double DiscountAdvance  get; set; 
        public double DiscountReturn  get; set; 
        public double DiscountManual  get; set; 
        public int TaxRate  get; set; 
        public int MonthlyPurchaseLimit  get; set; 
        public double UnitCost  get; set; 
        public int TermDay  get; set; 
        public double Increase  get; set; 
        public double WebPriceSales  get; set; 
        public double _PriceSales  get; set; 
        public int ProductCompanyID  get; set; 
        public string Company  get; set; 
        public int FollowingAmount  get; set; 
        public List<CampaignList> CampaignList  get; set; 
        public List<ImageList> ImageList  get; set; 
        public int TotalQuantity  get; set; 
        public double TotalAmount  get; set; 
        public bool IsCampaign  get; set; 
    

我在 Xamarin 中有 2 页。在第一页中，它应该显示来自 Roots 的 json 文件的第一部分，例如名称：NIVEA Sun F50 Kids Sprey Hassas 200ml 但在第二页中，它应该显示来自 CampaignList 的 json 文件的第二部分，例如：名称：1A NIVEA KAMPANYALARI 所以它是我的代码页： 第一页（它的作品。它没有任何问题）：

public async void GetJason()
        

            HttpClient httpClient = new HttpClient();
            var url = "http://api.lokmanecza.com/api/products/4005900253330";
            var response = await httpClient.GetStringAsync(url);


            Root myProducts = JsonConvert.DeserializeObject<Root>(response);
            urunadi.Text = myProducts.Name;
            kdv.Text = "%" + myProducts.TaxRate.ToString();
            firma.Text = myProducts.Company;
            dsf.Text = myProducts.PriceSalesWithTax.ToString("0.00");
            psf.Text = myProducts.PriceListWithTax.ToString("0.00");
            barkod.Text = myProducts.Barcode;

第二页：

public async void GetJason()
    

        HttpClient httpClient = new HttpClient();
        var url = "http://api.lokmanecza.com/api/products/4005900253330";
        var response2 = await httpClient.GetStringAsync(url);
        CampaignList myCampaignList = JsonConvert.DeserializeObject<CampaignList>(response2);
        CampName.Text = myCampaignList.ID.ToString();
        Miktar.Text = myCampaignList.Amount.ToString();
        MF.Text = myCampaignList.ExtraAmount.ToString();
        Oran.Text = "-----";
        Minmiktar.Text = myCampaignList.MinAmount.ToString();
        isk1.Text = myCampaignList.Discount1.ToString("0:00");
        isk2.Text = myCampaignList.Discount2.ToString("0:00");
        isk3.Text = myCampaignList.Discount3.ToString("0:00");
        isk4.Text = myCampaignList.Discount4.ToString("0:00");

【问题讨论】：

请不要将代码或错误或数据（如 json）作为图像发布。请花时间将其作为文本发布并正确格式化以使其可读。

好的。谢谢你。我现在编辑它。

@Cfun 对不起兄弟，我再次编辑我的问题。我尽量说得好。但我猜我的英语还不够。对不起。

【参考方案1】：

两个页面都将相同的数据反序列化为两个完全不同的模型。这行不通。第二页需要CampaignList 数据，它是第一页上Root 对象的数据的子元素。无需两次请求相同的数据

你可以做这样的事情

// pass the myProducts object from page1 to page2 on the constructor
// instead of calling the service again
CampaignList myCampaignList = myProducts.CampaignList;

// myCampaignList is a list of objects, you have to specify which one to use
CampName.Text = myCampaignList[0].ID.ToString();
Miktar.Text = myCampaignList[0].Amount.ToString();
MF.Text = myCampaignList[0].ExtraAmount.ToString();

这也将帮助很多人学会使用数据绑定而不是手动设置所有 UI 元素的值

【讨论】：

兄弟你太棒了，非常感谢你