Question 110926 in Json Question posted in
Our archive of expertly curated questions and answers provides insights and solutions to common problems related to this popular data interchange format. From parsing and manipulating JSON data to integrating it with various programming languages and web services, our archive has got you covered. Start exploring today and take your JSON skills to the next level

Deserializing a .json file to a dictionary in c#

I am trying to deserialize a dictionary that I was able to already serialize into a .json file.
I made have a class ‘Schedule’ that is basically the following:

Dictionary<Dag, Stack<Training>>

In my data layer I have the following .json file:

 {
  "FullSchedule": {
    "Maandag": [
      {
        "Name": "test",
        "Description": "test",
        "Trainingsort": 0,
        "Hours": 1,
        "Minutes": 0
      }
    ],
    "Dinsdag": [],
    "Woensdag": [
      {
        "Name": "test",
        "Description": "test",
        "Trainingsort": 0,
        "Hours": 0,
        "Minutes": 30
      }
    ],
    "Donderdag": [],
    "Vrijdag": [],
    "Zaterdag": [],
    "Zondag": []
  }
}

As you can see it has the days with a stack of Training objects. But I am not able to deserialize it back to the dictionary as shown above.

It’s a school project so I can’t use the Newtonsoft and I have to use System.Text.JSON

This is the code i have at the moment:

public static Dictionary<string, Stack<Training>> ReadJSON(string path)
    {
        if (!Directory.Exists(path)) throw new ArgumentException("Path does not exist");

        // First read the file in as a string, then parse it
        string scheduleString = "";
        try
        {
            using (StreamReader sr = new StreamReader($@"{path}.json"))
            {
                scheduleString = sr.ReadToEnd();
            }
        }
        catch (Exception e) { throw new Exception(e.Message); }

        var schedule = JsonSerializer.Deserialize<Dictionary<string, Stack<Training?>>>(scheduleString);
        return schedule;
    }

Thanks in advance!

Tags:

2

Answers


  1. 0

    According to how it looks, your json will be deserialized in such class:

    public class SomeClass
{
    public Dictionary<string, Stack<Training?>> FullSchedule { get; set; }
}
...
var schedule = System.Text.Json.JsonSerializer.Deserialize<SomeClass>(jsonString);
    Login or Signup to reply.
  2. 0

    you can parse json string and after this to deserialize a FullSchedule value

    var jsonDocument = JsonDocument.Parse(scheduleString);

Dictionary<string, Stack<Training?>> schedule = jsonDocument.RootElement
  .GetProperty("FullSchedule").Deserialize<Dictionary<string, Stack<Training?>>>();
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search