獲取文本之間的字符串文本中說串

Question

可以說我有一個字符串，它看起來像這樣

{ 
    "_links": { 
    "next": "https://api.twitch.tv/kraken/users/test_user1/follows/channels?direction=DESC&limit=25&offset=25", 
    "self": "https://api.twitch.tv/kraken/users/test_user1/follows/channels?direction=DESC&limit=25&offset=0" 
    }, 
    "follows": [ 
    { 
     "created_at": "2013-06-02T09:38:45Z", 
     "_links": { 
     "self": "https://api.twitch.tv/kraken/users/test_user1/follows/channels/test_channel" 
     }, 
     "channel": { 
     "banner": null, 
     "_id": 1, 
     "url": "http://www.twitch.tv/test_channel", 
     "mature": null, 
     "teams": [ 

     ], 
     "status": null, 
     "logo": null, 
     "name": "test_channel", 
     "video_banner": null, 
     "display_name": "test_channel", 
     "created_at": "2007-05-22T10:37:47Z", 
     "delay": 0, 
     "game": null, 
     "_links": { 
      "stream_key": "https://api.twitch.tv/kraken/channels/test_channel/stream_key", 
      "self": "https://api.twitch.tv/kraken/channels/test_channel", 
      "videos": "https://api.twitch.tv/kraken/channels/test_channel/videos", 
      "commercial": "https://api.twitch.tv/kraken/channels/test_channel/commercial", 
      "chat": "https://api.twitch.tv/kraken/chat/test_channel", 
      "features": "https://api.twitch.tv/kraken/channels/test_channel/features" 
     }, 
     "updated_at": "2008-02-12T06:04:29Z", 
     "background": null 
     } 
    }, 
    ... 
    ] 
} 

通道的部分會具有不同的值「名稱」部分出現的次數X量。我將如何使用正則表達式或者沒有獲得上面代碼中「test_channel」值的「name」中的值。所有的時間，它出現，然後將其打印到一個文本框

我覺得我已經成功的唯一部分是正則表達式部分

string regex = @"(""name"":)\s+(\w+)(,""video_banner"")"; 

Answer 1

使用Json.Net和this site

var obj = JsonConvert.DeserializeObject<Krysvac.RootObject>(yourJsonString); 
foreach(var item in obj.follows) 
{ 
    Console.WriteLine(item.channel.name); 
} 

---

public class Krysvac 
{ 
    public class Links 
    { 
     public string next { get; set; } 
     public string self { get; set; } 
    } 

    public class Links2 
    { 
     public string self { get; set; } 
    } 

    public class Links3 
    { 
     public string stream_key { get; set; } 
     public string self { get; set; } 
     public string videos { get; set; } 
     public string commercial { get; set; } 
     public string chat { get; set; } 
     public string features { get; set; } 
    } 

    public class Channel 
    { 
     public object banner { get; set; } 
     public int _id { get; set; } 
     public string url { get; set; } 
     public object mature { get; set; } 
     public List<object> teams { get; set; } 
     public object status { get; set; } 
     public object logo { get; set; } 
     public string name { get; set; } 
     public object video_banner { get; set; } 
     public string display_name { get; set; } 
     public string created_at { get; set; } 
     public int delay { get; set; } 
     public object game { get; set; } 
     public Links3 _links { get; set; } 
     public string updated_at { get; set; } 
     public object background { get; set; } 
    } 

    public class Follow 
    { 
     public string created_at { get; set; } 
     public Links2 _links { get; set; } 
     public Channel channel { get; set; } 
    } 

    public class RootObject 
    { 
     public Links _links { get; set; } 
     public List<Follow> follows { get; set; } 
    } 
} 

如果您不想聲明這些類，則也可以使用dynamic關鍵字

dynamic obj = JsonConvert.DeserializeObject(yourJsonString); 
foreach(var item in obj.follows) 
{ 
    Console.WriteLine(item.channel.name); 
} 

Answer 2

如果你建立類，如使用json2csharp.com下，你會得到以下類的輸入字符串：

public class Links 
{ 
    public string next { get; set; } 
    public string self { get; set; } 
} 

public class Links2 
{ 
    public string self { get; set; } 
} 

public class Links3 
{ 
    public string stream_key { get; set; } 
    public string self { get; set; } 
    public string videos { get; set; } 
    public string commercial { get; set; } 
    public string chat { get; set; } 
    public string features { get; set; } 
} 

public class Channel 
{ 
    public object banner { get; set; } 
    public int _id { get; set; } 
    public string url { get; set; } 
    public object mature { get; set; } 
    public List<object> teams { get; set; } 
    public object status { get; set; } 
    public object logo { get; set; } 
    public string name { get; set; } 
    public object video_banner { get; set; } 
    public string display_name { get; set; } 
    public string created_at { get; set; } 
    public int delay { get; set; } 
    public object game { get; set; } 
    public Links3 _links { get; set; } 
    public string updated_at { get; set; } 
    public object background { get; set; } 
} 

public class Follow 
{ 
    public string created_at { get; set; } 
    public Links2 _links { get; set; } 
    public Channel channel { get; set; } 
} 

public class RootObject 
{ 
    public Links _links { get; set; } 
    public List<Follow> follows { get; set; } 
} 

現在，你只需要輸入JSON字符串反序列化RootObject類獲取所有name S IN使用稱爲Json.net

string json = "JSON STRING"; 
RootObject root = JsonConvert.DeserializeObject<RootObject>(json); 
List<string> names = root.follows.Select(follow => follow.channel.name).ToList(); 

foreach (string name in names) 
{ 
    txtBox += name + "; "; 
} 

Answer 3

好其他實用程序的輸入字符串，所以我得到了它的工作沒有W，但是，如果我用我的用戶名找回JSON，我得到一個巨大的代碼，你可以查看這裏一片：https://api.twitch.tv/kraken/users/krysvac/follows/channels

我folllow 31人，但是當我使用我的程序就可以用代碼

using (var w = new WebClient()) 
      { 
       string json_data = w.DownloadString("https://api.twitch.tv/kraken/users/" + input + "/follows/channels"); 

       dynamic obj = JsonConvert.DeserializeObject(json_data); 
       foreach (var item in obj.follows) 
       { 
        textBox1.AppendText(item.channel.name.ToString() + Environment.NewLine);          
       } 
      } 

我從我的31個人中的25個回到了文本框中，我不知道爲什麼，我試了一個人，應該返回超過100人，並有6人回來。