How can i access data from public object value c# Windows App

Question

public class Rootobject
{
public string id { get; set; }
public string id_form { get; set; }
public string name { get; set; }
public string id_creator { get; set; }
public DateTime creation_date { get; set; }
public DateTime modification_date { get; set; }
public Item[] items { get; set; }
}

public class Item  
{  
    public int id_form_item { get; set; }  
    public string item_type { get; set; }  
    public object value { get; set; }  
}

Answer 1

@Ahmed Abdo , Welcome to Microsoft Q&A, based on my test, I find that your json file has the problem. Please delete the comment // This value in your json file.

Then, you could try the following code to access the value by using class object.

  public partial class Form1 : Form  
    {  
        public Form1()  
        {  
            InitializeComponent();  
        }  
  
        private void button1_Click(object sender, EventArgs e)  
        {  
            var myJsonResponse = File.ReadAllText(@"C:\Users\username\Desktop\2.txt");  
            dynamic myDeserializedClass = JsonConvert.DeserializeObject<Root>(myJsonResponse);  
             textBox1.Text = myDeserializedClass.items[9].value[0][0].id_form_item;  
        }  
    }  
  
  
    public class Item  
    {  
        public int id_form_item { get; set; }  
        public string item_type { get; set; }  
        public object value { get; set; }  
    }  
  
    public class Root  
    {  
        public string id { get; set; }  
        public string id_form { get; set; }  
        public string name { get; set; }  
        public string id_creator { get; set; }  
        public DateTime creation_date { get; set; }  
        public DateTime modification_date { get; set; }  
        public List<Item> items { get; set; }  
    }  

Result:

Best Regards,
Jack

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Answer 2

Use a static class or a Singleton

Singleton example which is thread safe done with .NET Core, C# 9

public sealed class RootObject  
{  
    private static readonly Lazy<RootObject> Lazy = new(() => new RootObject());  
    public static RootObject Instance => Lazy.Value;  
    public int Id { get; set; }  
    public string Name { get; set; }  
}  

Set a property

RootObject.Instance.Id = 0;  

Get the property

SomeId = RootObject.Instance.Id;  

Syntax for .NET Framework

public sealed class RootObject  
{  
    private static readonly Lazy<RootObject> Lazy =  
        new Lazy<RootObject>(() =>  
            new RootObject());  
  
    public int Id { get; set; }  
    public string Name { get; set; }  
    public static RootObject Instance => Lazy.Value;  
}  

Answer 3

thank you for your Support

we get JSON data from API but can't access this value

211526-jsonfiledata.txt

Answer 4

Thanks @Jack J Jun