c＃进度条IsIndeterminate动画卡在GUI线程中

Question

I got this code below that is called whenever a button is clicked. Now, since it's using Telnet and I had to add a bunch of Thread.Sleep(), this method takes a good 5-7 seconds to execute.

I was wondering if theres a way to have the animation of the Progress Bar at the same time as this run to let the user know that everything is fine.

Thanks.

private void rack_Click(object sender, RoutedEventArgs e)
            {
                progressBar.IsIndeterminate = true;

                // Extrait le nom du rack sélectionné 
                selectedRack = (sender as Button).Content.ToString().ToLower();

                // Console Update
                console.Text += "Connexion en cours...";

                // Ouvre la connection au PDU
                clientPDU = this.getConnectionPDU();

                // S'assure que la connection fut éffectué correctement
                if (clientPDU != null)
                {
                    // Disable les autres racks
                    for (int i = 65; i < 71; i++)
                    {
                        Button btn = (Button)FindName("rack_" + ((char)i));
                        if (btn.Content.ToString().ToLower() != selectedRack)
                            btn.IsEnabled = false;
                    }

                    // Active Rafraichir et Déconnecter
                    refresh.IsEnabled = true;
                    disconnect.IsEnabled = true;

                    // Console Update
                    console.Text += "\nConnexion établie";

                    // Mettre à jour les Port qui sont ouvert/fermé
                    this.getPortStatus();

                    // Active les boutons en correspondance à ce qui est On et Off
                    this.setButtonStatus();
                }
                else
                {
                    // Console Update
                    console.Text += "\n\nConnexion Impossible. Veuillez réessayer...\n";
                }

                // Scroll to end
                scroller.ScrollToEnd();

                progressBar.IsIndeterminate = false;
            }

Answer 1

You will need to set the IsIndeterminate property to false and specify values for the progress bar throughout the operation in order to provide for animation of the progressbar.:

progressBar.IsIndeterminate = false;
// set the maximum for the progressBar
progressBar.Maximum = 100;
// do work and increment value
progressBar.Value++;

The following page has an example of a ProgressBar with the IsIndeterminate property set to true and a picture of what the animation looks like (it provides no real user feedback). The page also has an example with IsIndeterminate set to false, but values must be specified. In this example, the work is done on a separate thread so as to allow for UI interaction while the work is being performed.

http://www.wpf-tutorial.com/misc-controls/the-progressbar-control/