CODEWITHSUNDEEP
c#deserialization
Selen
Selen

Reputation: 210

Deserialization problem while loading objects

My aim is to set the bool values where they left of by reading from txt.

Here is my problem, simply, and step by step;

  1. I set the values to "true" by clicking the set button

  2. In txt file, JSON objects are set to true successfully

  3. I closed and re-run the program

  4. I expect the current bool flags to be "true" from previous run

However they are still false, I there is a problem with "deserialize" Button2_Click_1 is just showing me the current values of the flags. Another point is that in the txt file flags are still true which seems okay.

I changed the order of deserialize and serialize yet nothing changed.

   [Serializable]
    class Class1
    {
        public bool flag { get; set; }
        public bool flag2 { get; set; }
        public Class1()
        {
            flag = false;
            flag2 = false;
        }
    }

[Serializable]
    public partial class Form1 : Form
    {

        public Form1()
        {
            InitializeComponent();
        }
        Class1 c1 = new Class1();


        private void Button1_Click(object sender, EventArgs e)
        {
            c1.flag = true;
            c1.flag2 = true;

            //deserialize
            string json2 = File.ReadAllText("path.txt");
            Class1 f2 = JsonConvert.DeserializeObject<Class1>(json2);

            //serialize
            string json = JsonConvert.SerializeObject(c1);
            File.WriteAllText("path.txt", json);


            Console.WriteLine(json);


        }

        private void Button2_Click_1(object sender, EventArgs e)
        {
            Console.WriteLine("Current Status of Flag1: "+c1.flag);
            Console.WriteLine("Current Status of Flag2: " + c1.flag2);
        }

Upvotes: 1

Views: 128

Answers (1)

Dan Scott
Dan Scott

Reputation: 564

If you are clicking Button2 without first clicking Button1 when the application starts up, c1 will be false by default since the default value of a boolean is false. if you wish to load the json when you click Button2 please add the following code above Console.WriteLine:

c1 = JsonConvert.DeserializeObject<Class1>(File.ReadAllText("path.txt"));

so that it becomes 

    private void Button2_Click_1(object sender, EventArgs e)
    {
        c1 = JsonConvert.DeserializeObject<Class1>(File.ReadAllText("path.txt"));
        Console.WriteLine("Current Status of Flag1: "+c1.flag);
        Console.WriteLine("Current Status of Flag2: " + c1.flag2);
    }

and this should fix your issue

Upvotes: 3

Related Questions