閱讀json字符串的內容

Question

所以我即將做一個HttpWebRequest它返回一個jsonstring。反序列化的字符串看起來是這樣的：

{ 
    "have_warnings": "20", 
    "pp_active": false, 
    "noofslots": 2, 
    "paused": true, 
    "pause_int": "0", 
    "mbleft": 7071.03378, 
    "diskspace2": 55.610168, 
    "diskspace1": 55.610168, 
    "jobs": [{ 
     "timeleft": "0:00:00", 
     "mb": 6918.785553, 
     "msgid": "", 
     "filename": "xxxx", 
     "mbleft": 5869.015694, 
     "id": "xx" 
    }, 
    { 
     "timeleft": "0:00:00", 
     "mb": 2238.526516, 
     "msgid": "", 
     "filename": "xxxx", 
     "mbleft": 1202.018086, 
     "id": "xxxx" 
    }], 
    "speed": "0 ", 
    "timeleft": "0:00:00", 
    "mb": 9157.312069, 
    "state": "Paused", 
    "loadavg": "0.11 | 0.08 | 0.08 | V=444M R=88M", 
    "kbpersec": 0.0 
} 

現在我想在我的UI中的標籤顯示的一些數據。什麼是最好的方法來做到這一點？

我tryed：

dynamic array = JsonConvert.DeserializeObject(qstatusOutput); 

     foreach (var item in array) 
     { 
      MessageBox.Show("{0}{1}", item.timeleft, item.mbleft); 
     } 

但我得到一個錯誤

'Newtonsoft.Json.Linq.JProperty' 不包含一個定義 '的timeleft'

Answer 1

舉一個類型安全的方法，你可以使用這個網站：http://json2csharp.com/

var root = JsonConvert.DeserializeObject<RootObject>(qstatusOutput); 
foreach (var job in root.jobs) 
{ 
    Console.WriteLine(job.timeleft); 
} 

public class Job 
{ 
    public string timeleft { get; set; } 
    public double mb { get; set; } 
    public string msgid { get; set; } 
    public string filename { get; set; } 
    public double mbleft { get; set; } 
    public string id { get; set; } 
} 

public class RootObject 
{ 
    public string have_warnings { get; set; } 
    public bool pp_active { get; set; } 
    public int noofslots { get; set; } 
    public bool paused { get; set; } 
    public string pause_int { get; set; } 
    public double mbleft { get; set; } 
    public double diskspace2 { get; set; } 
    public double diskspace1 { get; set; } 
    public List<Job> jobs { get; set; } 
    public string speed { get; set; } 
    public string timeleft { get; set; } 
    public double mb { get; set; } 
    public string state { get; set; } 
    public string loadavg { get; set; } 
    public double kbpersec { get; set; } 
} 

，但如果你想使用dynamic然後

dynamic array = JsonConvert.DeserializeObject(qstatusOutput); 

foreach (var item in array.jobs) 
{ 
    MessageBox.Show(String.Format("{0} {1}", item.timeleft, item.mbleft)); 
} 

Answer 2

剩下的時間就在裏面工作，所以下面試試

foreach (var item in array.jobs) 
{ 
    MessageBox.Show("{0}{1}", item.timeleft, item.mbleft); 
} 

Answer 3

您的結果來自DeserializeObject不是陣列。它是一個包含數組作爲一個屬性的結構。

dynamic result = JsonConvert.DeserializeObject(qstatusOutput); 
dynamic array = result.jobs; 

foreach (var item in array) 
{ 
    MessageBox.Show("{0}{1}", item.timeleft, item.mbleft); 
}