Question

我跟随json ..我将我的json转换为objectclass并获得subjectid和class id循环，但它不起作用。我想要subjectid和classid请帮助我怎么做。我是c的新人＃请帮助我我非常感谢你们

[{
    "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

执行以下步骤以实现您的需求：

使用我的答案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。
使用NewtonSoft NuGet包从json反序列化为C＃type
然后使用Linq或循环获取所需的属性。

以下是您的代码：

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

顺便说一下，这就是我的链接答案将为您生成的内容：

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; }
}

如何将json转换为object并获取数据循环

1 个答案: