Question

I’ve noticed that there is a difference in the time it takes for a WPF Progress Bar and a WinForms Progress Bar to fill completely.

Fill completely as in set the Value to 100 in both Forms and WPF, one can notice that WinForms fills the bar smoothly whereas the WPF fills it instantly.

I wanted to know if there is a property that we can edit in the templates to change that.

Hope I made it clear, I can post a video too if anyone wants.

EDIT

Here’s a video of what I’m talking about, notice the difference ?

EDIT 2

Filling the progress bar with a timer ?

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Animation;

namespace WpfApplication2
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            this.InitializeComponent();
            this.Title = "WPF Progress Bar Demo";
        }

        private void fill(int from, int to)
        {
            Duration duration = new Duration(TimeSpan.FromSeconds(0.5));
            DoubleAnimation doubleanimation = new DoubleAnimation(from, to, duration);
            progb.BeginAnimation(ProgressBar.ValueProperty, doubleanimation);
        }

        private void fill_Click(object sender, RoutedEventArgs e)
        {
            fill(0, 100);
        }
    }
}

Is that OK and will it work anywhere ?

Feel free to change it.

Thanks.

Answer 1

It looks like it’s a problem (or not) with only WPF progress bar…another user reported it here

1. WPF Control, exactly progress bar, does not update itself when
   copying When I test to copy a big file, the complete GUI just
   completely freezes. The progress bar doesn’t run smoothly. It just
   jumps from 0 to 100.

It was solved by adding an extension method:

 //Your Code
    pbBar.Value = some_value;
    pbBar.Refresh();
 //Your Code

public static class ExtensionMethods
{
    private static Action EmptyDelegate = delegate() { };
    public static void Refresh(this UIElement uiElement)
    {
        uiElement.Dispatcher.Invoke(DispatcherPriority.Render, EmptyDelegate);
    }

    public static void RefreshInput(this UIElement uiElement)
    {
        uiElement.Dispatcher.Invoke(DispatcherPriority.Input, EmptyDelegate);
    }
}

Calling the Refresh() method after setting the value solved the issue.

But, what I found was even after applying the refresh() method, the progress bar jumps on each run (from different values).

Using a backgroundworker and reportprogress gives the exact result with no "jumps".