Shrlalgo.RvKits/AntDesignWPF/Helpers/ProgressAssist.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Controls;
using System.Windows.Media.Animation;
using System.Windows;

namespace AntDesign.WPF.Helpers
{
    public class ProgressAssist
    {
        public static double GetSmoothValue(DependencyObject obj)
        {
            return (double)obj.GetValue(SmoothValueProperty);
        }

        public static void SetSmoothValue(DependencyObject obj, double value)
        {
            obj.SetValue(SmoothValueProperty, value);
        }

        public static readonly DependencyProperty SmoothValueProperty =
            DependencyProperty.RegisterAttached("SmoothValue", typeof(double), typeof(ProgressAssist), new PropertyMetadata(0.0, changing));

        private static void changing(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            var anim = new DoubleAnimation((double)e.OldValue, (double)e.NewValue, new TimeSpan(0, 0, 0, 0, 300));
            (d as ProgressBar).BeginAnimation(System.Windows.Controls.Primitives.RangeBase.ValueProperty, anim, HandoffBehavior.Compose);
        }
    }
}