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Code run - after instantiate GUI-Controls in Thread - is not executed ???

MSFanboy
MSFanboy asked
on
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Last Modified: 2012-05-06
Hello

I have 2 Form. In the MainWindow I start a thread which creates the second Form -ProgressWindow - and I try to set a value in the ProgressBar but nothings happens, WHY?

I get no exception just nothing happens after the Dialog is shown.
FORM_1:
 
public partial class MainWindow : Form
    {
        public MainWindow()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            var myThread = new Thread(Calculate_Tread);
            myThread.Start();
        }
 
        public void Calculate_Tread()
        {
            var myProgressWindow = new ProgressWindow();
            myProgressWindow.ShowDialog();
            Console.WriteLine("code after ShowDialog");
            myProgressWindow.SetValue(80);
 
        }
    }
 
FORM_2:
 
public partial class ProgressWindow : Form
    {
        public ProgressWindow()
        {
            InitializeComponent();
        }
 
        public void SetValue(int value)
        {
            progressBar1.Value = value;
        }
    }

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