C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using Newtonsoft.Json;

public class Name
{
	public string type { get; set; }
}

public class Items
{	
	public string type { get; set; }
}

public class Hobbies
{
	public Hobbies()
	{
		items = new Items();
	}
	public string type { get; set; }
	public Items items { get; set; }
}

public class Properties
{
	public Properties()
	{
		hobbies = new Hobbies();
		name = new Name(); 
	}
	public Name name { get; set; }
	public Hobbies hobbies { get; set; }
}

public class Example
{
	public Example()
	{
		properties = new Properties();
	}
	public string description { get; set; }
	public string type { get; set; }
	public Properties properties { get; set; }
}
					
public class Program
{
	public static void Main()
	{
		Example model = new Example();
        model.properties.name.type = "cc";
		var data = JsonConvert.SerializeObject(model);
		System.Console.WriteLine(data);
	}
}

​x
 
using Newtonsoft.Json;
​
public class Name
{
    public string type { get; set; }
}
​
public class Items
{   
    public string type { get; set; }
}
​
public class Hobbies
{
    public Hobbies()
    {
        items = new Items();
    }
    public string type { get; set; }
    public Items items { get; set; }
}
​
public class Properties
{
    public Properties()
    {
        hobbies = new Hobbies();
        name = new Name(); 
    }
    public Name name { get; set; }
    public Hobbies hobbies { get; set; }
}
​
public class Example
{
    public Example()
    {
        properties = new Properties();
    }
    public string description { get; set; }
    public string type { get; set; }
    public Properties properties { get; set; }
}
                    
public class Program
{
    public static void Main()
    {
        Example model = new Example();
        model.properties.name.type = "cc";
        var data = JsonConvert.SerializeObject(model);
        System.Console.WriteLine(data);
    }
}

Compilation error (line 33, col 1): A using clause must precede all other elements defined in the namespace except extern alias declarations
Compilation error (line 34, col 1): A using clause must precede all other elements defined in the namespace except extern alias declarations
Compilation error (line 35, col 1): A using clause must precede all other elements defined in the namespace except extern alias declarations
Compilation error (line 36, col 1): A using clause must precede all other elements defined in the namespace except extern alias declarations
Compilation error (line 37, col 1): A using clause must precede all other elements defined in the namespace except extern alias declarations
Compilation error (line 38, col 1): A using clause must precede all other elements defined in the namespace except extern alias declarations
Compilation error (line 39, col 1): A using clause must precede all other elements defined in the namespace except extern alias declarations
Compilation error (line 40, col 1): A using clause must precede all other elements defined in the namespace except extern alias declarations
Compilation error (line 41, col 1): A using clause must precede all other elements defined in the namespace except extern alias declarations

Last Run:	7:06:42 am
Compile:	0s
Execute:	0.031s
Memory:	0b
CPU:	0s

View IL Code