Question

I have application that have button i want when click this button every 1 second add special text add to a TextBox but when click this button all time wait and enter all text together.

what is problem ?

for example :

 private void button2_Click(object sender, RoutedEventArgs e)
        {
            Random rand = new Random(DateTime.Now.Millisecond);
            textBox1.Text = "";
            for (int i = 0; i < 10; i++)
            {
                textBox1.Text += rand.Next(1,10) + "\n";
                System.Threading.Thread.Sleep(1000);
            }
        }

thanks.

Answer 1

You’re sleeping on the UI thread.
This freezes the UI.

Instead, use a BackgroundWorker and its progress events.