我正在尝试反序列化以下字符串
{
"city": [
{
"city_id": "31",
"City_Name": "Bergisch Gladbach",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340553787.JPG"
},
{
"city_id": "33",
"City_Name": "Bielefeld",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340553877.JPG"
},
{
"city_id": "30",
"City_Name": "Augsburg",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340553748.JPG"
},
{
"city_id": "27",
"City_Name": "Düsseldorf",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1339865688.JPG"
},
{
"city_id": "29",
"City_Name": "Aachen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340553717.JPG"
},
{
"city_id": "23",
"City_Name": "Jena",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1339000040.JPG"
},
{
"city_id": "12",
"City_Name": "Aachen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1336759859.JPG"
},
{
"city_id": "25",
"City_Name": "Berlin",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1339865665.JPG"
},
{
"city_id": "26",
"City_Name": "Essen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1339865677.JPG"
},
{
"city_id": "14",
"City_Name": "Bergisch Gladbach",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1336759880.JPG"
},
{
"city_id": "34",
"City_Name": "Bochum",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340553912.JPG"
},
{
"city_id": "21",
"City_Name": "Frankfurt am Main",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1337670208.JPG"
},
{
"city_id": "20",
"City_Name": "All",
"City_Image": "http://beta.preis-ente.de/admin/1"
},
{
"city_id": "35",
"City_Name": "Bonn",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340553958.JPG"
},
{
"city_id": "36",
"City_Name": "Bottrop",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340553996.JPG"
},
{
"city_id": "37",
"City_Name": "Braunschweig",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554029.JPG"
},
{
"city_id": "38",
"City_Name": "Bremen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554080.JPG"
},
{
"city_id": "39",
"City_Name": "Bremerhaven",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554112.JPG"
},
{
"city_id": "40",
"City_Name": "Chemnitz",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554147.JPG"
},
{
"city_id": "41",
"City_Name": "Cottbus",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554189.JPG"
},
{
"city_id": "42",
"City_Name": "Darmstadt",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554234.JPG"
},
{
"city_id": "43",
"City_Name": "Dessau ",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554279.JPG"
},
{
"city_id": "44",
"City_Name": "Dortmund",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554332.JPG"
},
{
"city_id": "45",
"City_Name": "Duisburg",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554432.JPG"
},
{
"city_id": "46",
"City_Name": "Düsseldorf",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554469.JPG"
},
{
"city_id": "47",
"City_Name": "Erfurt",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554505.JPG"
},
{
"city_id": "48",
"City_Name": "Erlangen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554546.JPG"
},
{
"city_id": "49",
"City_Name": "Essen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554585.JPG"
},
{
"city_id": "50",
"City_Name": "Essen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554585.JPG"
},
{
"city_id": "51",
"City_Name": "Flensburg ",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554625.JPG"
},
{
"city_id": "52",
"City_Name": "Frankfurt am Main",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554667.JPG"
},
{
"city_id": "53",
"City_Name": "Freiburg im Breisgau",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554703.JPG"
},
{
"city_id": "54",
"City_Name": "Fürth",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554740.JPG"
},
{
"city_id": "55",
"City_Name": "Gelsenkirchen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554783.JPG"
},
{
"city_id": "56",
"City_Name": "Gera",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554829.JPG"
},
{
"city_id": "57",
"City_Name": "Görlitz ",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554864.JPG"
},
{
"city_id": "58",
"City_Name": "Göttingen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554925.JPG"
},
{
"city_id": "59",
"City_Name": "Hagen (Westfalen)",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340554969.JPG"
},
{
"city_id": "60",
"City_Name": "Halle (Saale)",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555012.JPG"
},
{
"city_id": "61",
"City_Name": "Hamburg",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555055.JPG"
},
{
"city_id": "62",
"City_Name": "Hamm",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555097.JPG"
},
{
"city_id": "63",
"City_Name": "Hannover",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555143.JPG"
},
{
"city_id": "64",
"City_Name": "Heidelberg",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555192.JPG"
},
{
"city_id": "65",
"City_Name": "Heilbronn",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555550.JPG"
},
{
"city_id": "66",
"City_Name": "Herne",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555598.JPG"
},
{
"city_id": "67",
"City_Name": "Hildesheim",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555635.JPG"
},
{
"city_id": "68",
"City_Name": "Ingolstadt",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555774.JPG"
},
{
"city_id": "69",
"City_Name": "Jena",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555818.JPG"
},
{
"city_id": "70",
"City_Name": "Kaiserslautern ",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555863.JPG"
},
{
"city_id": "71",
"City_Name": "Karlsruhe",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555908.JPG"
},
{
"city_id": "72",
"City_Name": "Kassel",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555942.JPG"
},
{
"city_id": "73",
"City_Name": "Kiel",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340555977.JPG"
},
{
"city_id": "74",
"City_Name": "Koblenz",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340556039.JPG"
},
{
"city_id": "75",
"City_Name": "Köln",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340556080.JPG"
},
{
"city_id": "76",
"City_Name": "Krefeld",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340556125.JPG"
},
{
"city_id": "77",
"City_Name": "Leipzig",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340556161.JPG"
},
{
"city_id": "78",
"City_Name": "Leverkusen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340556197.JPG"
},
{
"city_id": "79",
"City_Name": "Lübeck",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340556239.JPG"
},
{
"city_id": "80",
"City_Name": "Ludwigshafen am Rhein",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340556278.JPG"
},
{
"city_id": "81",
"City_Name": "Magdeburg",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340556325.JPG"
},
{
"city_id": "82",
"City_Name": "Mainz",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340557473.JPG"
},
{
"city_id": "83",
"City_Name": "Mannheim",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340557533.JPG"
},
{
"city_id": "84",
"City_Name": "Moers",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340557586.JPG"
},
{
"city_id": "85",
"City_Name": "Mönchengladbach",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340557637.JPG"
},
{
"city_id": "86",
"City_Name": "München",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340557760.JPG"
},
{
"city_id": "87",
"City_Name": "Neuss",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340557855.JPG"
},
{
"city_id": "88",
"City_Name": "Nürnberg",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340557896.JPG"
},
{
"city_id": "89",
"City_Name": "Oberhausen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340557934.JPG"
},
{
"city_id": "90",
"City_Name": "Offenbach am Main",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340557984.JPG"
},
{
"city_id": "91",
"City_Name": "Oldenburg",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558036.JPG"
},
{
"city_id": "92",
"City_Name": "Osnabrück",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558082.JPG"
},
{
"city_id": "93",
"City_Name": "Paderborn",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558119.JPG"
},
{
"city_id": "94",
"City_Name": "Pforzheim",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558158.JPG"
},
{
"city_id": "95",
"City_Name": "Plauen ",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558196.JPG"
},
{
"city_id": "96",
"City_Name": "Potsdam",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558232.JPG"
},
{
"city_id": "97",
"City_Name": "Recklinghausen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558279.JPG"
},
{
"city_id": "98",
"City_Name": "Regensburg",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558320.JPG"
},
{
"city_id": "99",
"City_Name": "Remscheid",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558369.JPG"
},
{
"city_id": "100",
"City_Name": "Rostock",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558482.JPG"
},
{
"city_id": "101",
"City_Name": "Saarbrücken",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558527.JPG"
},
{
"city_id": "102",
"City_Name": "Salzgitter",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558573.JPG"
},
{
"city_id": "103",
"City_Name": "Schwerin ",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558621.JPG"
},
{
"city_id": "104",
"City_Name": "Siegen",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558671.JPG"
},
{
"city_id": "105",
"City_Name": "Solingen",
"City_Image": "files/city/1340558822.jpg"
},
{
"city_id": "106",
"City_Name": "Stuttgart",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558759.JPG"
},
{
"city_id": "107",
"City_Name": "Trier",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558803.JPG"
},
{
"city_id": "108",
"City_Name": "Ulm",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558854.JPG"
},
{
"city_id": "109",
"City_Name": "Wiesbaden",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558898.JPG"
},
{
"city_id": "110",
"City_Name": "Wilhelmshaven ",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558939.JPG"
},
{
"city_id": "111",
"City_Name": "Witten",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340558974.JPG"
},
{
"city_id": "112",
"City_Name": "Wolfsburg",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340559036.JPG"
},
{
"city_id": "113",
"City_Name": "Wuppertal",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340559075.JPG"
},
{
"city_id": "114",
"City_Name": "Würzburg",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340559126.JPG"
},
{
"city_id": "115",
"City_Name": "Zwickau",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340559178.JPG"
},
{
"city_id": "116",
"City_Name": "Dresden",
"City_Image": "http://beta.preis-ente.de/admin/files/city/1340615331.JPG"
}
],
"success": "true"
}
使用以下代码：
public static List<T> Deserialize<T>(string json)
{
List<T> obj = new List<T>();
MemoryStream ms = new MemoryStream(Encoding.Unicode.GetBytes(json));
System.Runtime.Serialization.Json.DataContractJsonSerializer serializer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(obj.GetType());
obj = (List<T>)serializer.ReadObject(ms);
ms.Close();
ms.Dispose();
return obj;
}
[DataContract]
public class CityList
{
public CityList()
{
this.city_id = string.Empty;
this.City_Image = string.Empty;
this.City_Name = string.Empty;
}
#region city id
[DataMember]
public string city_id { get; set; }
#endregion
#region City Name
[DataMember]
public string City_Name { get; set; }
#endregion
#region City Image
[DataMember]
public string City_Image { get; set; }
#endregion
}
当我调用函数Deserialize＆gt;（jsonString）时 我怎样才能解决这个问题？ 我收到了以下错误：
Error: InvalidCastException was Unhandled
at ListPickerSample.Common.Utility.Deserialize[T](String json)
at ListPickerSample.MainPage.client_DownloadStringCompleted(Object sender, DownloadStringCompletedEventArgs e)
at System.Net.WebClient.OnDownloadStringCompleted(DownloadStringCompletedEventArgs e)
at System.Net.WebClient.DownloadStringOperationCompleted(Object arg)
at System.Reflection.RuntimeMethodInfo.InternalInvoke(RuntimeMethodInfo rtmi, Object obj, BindingFlags invokeAttr, Binder binder, Object parameters, CultureInfo culture, Boolean isBinderDefault, Assembly caller, Boolean verifyAccess, StackCrawlMark& stackMark)
at System.Reflection.RuntimeMethodInfo.InternalInvoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, StackCrawlMark& stackMark)
at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
at System.Delegate.DynamicInvokeOne(Object[] args)
at System.MulticastDelegate.DynamicInvokeImpl(Object[] args)
at System.Delegate.DynamicInvoke(Object[] args)
at System.Windows.Threading.DispatcherOperation.Invoke()
at System.Windows.Threading.Dispatcher.Dispatch(DispatcherPriority priority)
at System.Windows.Threading.Dispatcher.OnInvoke(Object context)
at System.Windows.Hosting.CallbackCookie.Invoke(Object[] args)
at System.Windows.Hosting.DelegateWrapper.InternalInvoke(Object[] args)
at System.Windows.RuntimeHost.ManagedHost.InvokeDelegate(IntPtr pHandle, Int32 nParamCount, ScriptParam[] pParams, ScriptParam& pResult)
答案 0 :(得分：1)
是的，您的City对象与您的JSON字符串不匹配。
这是一个有效的版本：
public class CityList
{
public List<City> city { get; set; }
public bool success { get; set; }
}
public class City
{
public string city_id { get; set; }
public string City_Name { get; set; }
public string City_Image { get; set; }
}
public class Program
{
private static void Main(string[] args)
{
var input = YOUR_STRING;
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(CityList));
using (var ms = new MemoryStream(Encoding.Unicode.GetBytes(input)))
{
var zz = serializer.ReadObject(ms);
}
}
}