如何将json转换为对象并获取数据循环

Question

我有以下json ..我将我的json转换为objectclass并获得了subjectid和class id循环，但它不工作。我想subjectid和CLASSID请帮助我如何干这事我在C＃中新请帮助我，我很thanful给你们

[{ 
    "teacherid": 1, 
    "teachername": "Addi Teacher", 
    "class": {  
     "class_id": 2,  
     "class_name": "Class 9" 
    }, 
    "subjecname": { 

     "subject_id": 2,   
     "Subject_Name": "chemistry" 
    }, 
    "$$hashKey": "object:10" 
}, { 
    "teacherid": 1, 
    "teachername": "Addi Teacher", 
    "class": {  
     "class_id": 2,  
     "class_name": "Class 9" 
    }, 
    "subjecname": { 
     "subject_id": 4,   
     "Subject_Name": "Science" 
    }, 
    "$$hashKey": "object:12" 
}, { 
    "teacherid": 1, 
    "teachername": "Addi Teacher", 
    "class": { 

     "class_id": 2,  
     "class_name": "Class 9" 
    }, 
    "subjecname": { 

     "subject_id": 3,   
     "Subject_Name": "P.Study" 
    }, 
    "$$hashKey": "object:14" 
}] 


//c# class 
public class Class 
{ 
    public int class_id { get; set; } 
    public string class_name { get; set; } 
} 

public class Subjecname 
{ 
    public int subject_id { get; set; } 
    public string Subject_Name { get; set; } 
} 

public class RootObject 
{ 
    public int teacherid { get; set; } 
    public string teachername { get; set; } 
    public Class @class { get; set; } 
    public Subjecname subjecname { get; set; } 
    public string __invalid_name__$$hashKey { get; set; } 
} 

// code 
    subjectobject objsub = new JavaScriptSerializer().Deserialize<subjectobject>(jsonstring); 

Answer 1

执行以下步骤来实现你所需要的：

1. 使用我的回答here为您的JSON生成C＃类。您手动创建的那个不能准确反映您的JSON。
2. 使用NewtonSoft NuGet包从json反序列化到C＃类型
3. 然后使用Linq或循环获取您需要的属性。

这里是你R代码里面会是什么样子：

var obj = JsonConvert.DeserializeObject<Rootobject>("your json"); 
var result = obj.Property1.Select(x => 
    new { ClassId = x._class.class_id, SubjectId = x.subjecname.subject_id }); 

---

顺便说一句，这是我的链接的答案将为您生成：

public class Rootobject 
{ 
    public Class1[] Property1 { get; set; } 
} 

public class Class1 
{ 
    public int teacherid { get; set; } 
    public string teachername { get; set; } 
    public Class2 _class { get; set; } 
    public Subjecname subjecname { get; set; } 
    public string hashKey { get; set; } 
} 

public class Class2 
{ 
    public int class_id { get; set; } 
    public string class_name { get; set; } 
} 

public class Subjecname 
{ 
    public int subject_id { get; set; } 
    public string Subject_Name { get; set; } 
}