json - 需要帮助在Windows应用程序

json - 需要帮助在Windows应用程序,第1张

假设这是我通过API收到的JSON数据......

var client = new HttpClient();

        var uri = new Uri("blabla.com");
        var response = await client.GetAsync(uri);
        string result = await response.Content.ReadAsStringAsync();

[

{

" id":" 1",

    "title": "Test_rom",
    "subtitle": "",
    "icon": "http://lpl.info/Admin/upload/cat.1.png"
},
{
    "id": "2",
    "title": "Jewelry",
    "subtitle": "",
    "icon": "http://lpl.info/Admin/upload/cat.2.png"
},

{
    "id": "3",
    "title": "Jackets",
    "subtitle": "All sizes available",
    "icon": "http://lpl.info/Admin/upload/cat.3.png"
}

] 在此之后我创建了一个类RootObject ... 公共类RootObject  {

public string id {get;组; }

public string title { get; set; }
public string subtitle { get; set; }
public string icon { get; set; }

}

NoW我只想显示" title"的值。键...(使用C#)

RootObject TotalList = new RootObject();

string hub =" &#34 ;;

foreach(TotalList.title中的var d)

{hub = hub " " d.ToString(); }

ResultsText.Text =毂;

但这是错误的..plz帮助

最佳答案:

2 个答案:

答案 0 :(得分:0)

也许不是等待你应该使用。 Await将继续处理而不等待响应,因此您将看到null。

var response = client.GetAsync(uri).Result;

您不应该遍历您的类对象字段。这是错误的

foreach (var d in TotalList.title)

{hub = hub   " "   d.ToString(); }

如果填充了TotalList(您应该能够在调试器中看到它),则可以使用

访问title的值
TotalList.title

我希望这对你有所帮助,不要放弃。

答案 1 :(得分:0)

我使用这种格式解决了这个问题......

private async void button_Click(object sender,RoutedEventArgs e)

    {
        var client = new HttpClient();
        var uri = new Uri("http://blabla.com");
        var response = await client.GetAsync(uri);
        var result = await response.Content.ReadAsStringAsync();

        RootObject TotalList = new RootObject();

           MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(result));
          DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(List<RootObject>));
          List <RootObject> resu =(List<RootObject>)ser.ReadObject(ms);

string hub =&#34; &#34 ;;

foreach(Resu中的RootObject d)

{hub = hub &#34; &#34; d.title.ToString(); }

ResultsText.Text = hub;

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