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Home Forums Deserialize json to object with a dictionary System.Text.Json in .Net Core 6. – MindStick
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1 Answers

Aryan Kumar
Aryan Kumar 08 Nov 2023
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In .NET Core 6, you can use the System.Text.Json library to deserialize JSON into an object that includes a dictionary. Here's how you can do it:

Let's assume you have a JSON object like this:

{
  "name": "John",
  "age": 30,
  "address": {
    "street": "123 Main St",
    "city": "New York"
  }
}

And you want to deserialize it into a C# class that includes a dictionary. Here's how you can achieve this:

  1. Define your C# classes, including the one with a dictionary property. For example:
using System.Collections.Generic;

public class Address
{
    public string Street { get; set; }
    public string City { get; set; }
}

public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
    public Dictionary<string, Address> Address { get; set; }
}
  1. Use the System.Text.Json.JsonSerializer class to deserialize the JSON string into an instance of your C# class. Here's how you can do it:
using System;
using System.Text.Json;

class Program
{
    static void Main()
    {
        string json = "{\"name\":\"John\",\"age\":30,\"address\":{\"street\":\"123 Main St\",\"city\":\"New York\"}}";

        // Deserialize the JSON string into a Person object
        Person person = JsonSerializer.Deserialize<Person>(json);

        // Access the deserialized object
        Console.WriteLine($"Name: {person.Name}");
        Console.WriteLine($"Age: {person.Age}");
        foreach

This code will deserialize the JSON string into a Person object, which includes a dictionary of addresses. You can then access the properties and the dictionary entries as needed.

Ensure you have the necessary using directives and the System.Text.Json library added to your .NET Core 6 project to use this deserialization approach.

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