WPF loading spinner

Question

The goal is to display the information that the application is working. So I\'m looking for an intelligent implementation sample of a loading spinner using WPF / MVVM.

Answer 1

CircularProgressBarBlue.xaml

CircularProgressBarBlue.xaml.cs

using System;

using System.Windows;

using System.Windows.Media.Animation;


        /// 

    /// Interaction logic for CircularProgressBarBlue.xaml
    /// 
    public partial class CircularProgressBarBlue
    {
        private Storyboard _sb;

        public CircularProgressBarBlue()
        {
            InitializeComponent();
            StartStoryBoard();
            IsVisibleChanged += CircularProgressBarBlueIsVisibleChanged;
        }

        void CircularProgressBarBlueIsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            if (_sb == null) return;
            if (e != null && e.NewValue != null && (((bool)e.NewValue)))
            {
                _sb.Begin();
                _sb.Resume();
            }
            else
            {
                _sb.Stop();
            }
        }

        void StartStoryBoard()
        {
            try
            {
                _sb = (Storyboard)TryFindResource("spinning");
                if (_sb != null)
                    _sb.Begin();
            }
            catch
            { }
        }
    }