[英]how to deserialize json into objects in c#
could not deserialize json into objects. 无法将json反序列化为对象。 try to use DataContractJsonSerializer .
尝试使用DataContractJsonSerializer 。
here is how i use it 这是我的用法
have NO idea how to cope with it.. 不知道该如何应对。
CLASS 类
[Serializable]
public class user
{
public user() { }
public user(string _uid, string _first_name, string _last_name, string _online)
{
this._uid = _uid;
this._first_name = _first_name;
this._last_name = _last_name;
this._online = _online;
}
string _uid;
string _first_name;
string _last_name;
string _online;
[DataMember]
public string uid
{
get { return _uid; }
set { _uid = value; }
}
[DataMember]
public string first_name
{
get { return _first_name; }
set { _first_name = value; }
}
[DataMember]
public string last_name
{
get { return _last_name; }
set { _last_name = value; }
}
[DataMember]
public string online
{
get { return _online; }
set { _online = value; }
}
}
DataContractJsonSerializer Usage DataContractJsonSerializer的用法
WebRequest w = WebRequest.Create(string.Format("https://api.vk.com/method/friends.get?uid=6631031&fields=uid,first_name,last_name&access_token={0}",_accesstoken));
Stream stream = w.GetResponse().GetResponseStream();
//StreamReader sread = new StreamReader(stream);//here i can get the result into a string
//string sLine = sread.ReadLine(); //to make sure the result is valid json
DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(user[]));
var result = (user[]) json.ReadObject(stream);
EXAMPLE OF MY JSON 我的JSON示例
"{\"response\":[{\"uid\":779358,\"first_name\":\"Dark\",\"last_name\":\"Knight\",\"online\":0},{\"uid\":1023931,\"first_name\":\"Екатерина\",\"last_name\":\"Гаврилова\",\"online\":0},{\"uid\":2475856,\"first_name\":\"Даша\",\"last_name\":\"Матвеева\",\"online\":0},......]}"
You could define a wrapper object containing a response
property of type user[]
in order to reflect your JSON structure: 您可以定义一个包装对象,其中包含类型为
user[]
的response
属性,以反映您的JSON结构:
[DataContract]
public class Result
{
[DataMember]
public user[] response { get; set; }
}
and then: 接着:
DataContractJsonSerializer json = new DataContractJsonSerializer(typeof(Result));
Result result = (Result)json.ReadObject(stream);
user[] users = result.response;
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