Can't update value on the main form

debugcn Published at Dev

Dima Kozyr

I my game on the WF I have a main form (left) and it's child form (right). In the child form I can change value of the progress bar and it works fine. But I have the same progress bar on the main form and I want to update it too. I can't do it.

VIDEO

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Code of the child form:

private MainForm mainForm = new MainForm();

// Button "Close"
private void button2_Click(object sender, EventArgs e)
{
    mainForm.MyInitializeComponent(); // This code must update value on the main form
    this.Close();
}

Code of the main form:

public void MyInitializeComponent()
{
    label33.Text = indicators.Food + "%";
    progressBar1.Value = indicators.Food;
}

If I'll open child form after I closed it, I see the changed value, ie it is stored. In both forms, the value is taken from a single variable.

Indicators.cs:

public sealed class Indicators
    {
        public Indicators()
        {
            Indicators.food = 75;
        }

        private static int food;

        public int Food
        {
            get { return food; }
            set { food = value; }
        }
    }

Servy

Have the main form add a form closed handler to the child form to update it's UI when the child is closed:

var childForm = new ChildForm();
childForm.FormClosed += (s, args) => MyInitializeComponent();
//...
childForm.Show();

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edited at2021-07-6

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