Why does Thread.Sleep() freeze the Form?

Question

I try to experiment with Thread.Sleep(). I created basic Windows Forms application with one button.

    private void button1_Click(object sender, Ev         


        

Answer 1

Re-arrange code as following

private void button1_Click(object sender, EventArgs e)
{
        Thread thread1 = new Thread(DoStuff);
        thread1.Start();
}

public void DoStuff()
{     
        for (int i = 0; i < 100000; i++)
        {
            Thread.Sleep(500);
            //Invoke goes here
        }
}

Now you run your WORK in a separate thread and release your UI thread for usual work (Drawing related or other work)

NOTE - Now you will need Invoke methods to change Button text , else you will get warning for "Cross-thread operation not valid"

More on Invokes - How to update the GUI from another thread in C#?