WPF实现进度条实时更新效果

<Window x:Class="ProgressBar.MainWindow"
 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
 xmlns:local="clr-namespace:ProgressBar"
 mc:Ignorable="d"
 Title="MainWindow" Height="250" Width="400">
 <Grid>
 <ProgressBar Name="progressBar" Minimum="1" Maximum="1000" Height="50"/>
 <Button Content="Done" VerticalAlignment="Bottom" HorizontalAlignment="Center" FontSize="20" Margin="10" Click="Button_Click"/>
 </Grid>
</Window>

using System;
using System.Windows;
using System.Windows.Controls.Primitives;
using System.Windows.Threading;
 
namespace ProgressBar
{
 /// <summary>
 /// MainWindow.xaml 的交互逻辑
 /// </summary>
 public partial class MainWindow : Window
 {
 public MainWindow()
 {
 InitializeComponent();
 }
 
 private delegate void UpdateProgressBarDelegate(DependencyProperty dp, object value);
 
 private void Button_Click(object sender, RoutedEventArgs e)
 {
 UpdateProgressBarDelegate updateProgressBaDelegate = new UpdateProgressBarDelegate(progressBar.SetValue);
 for (int i = (int)progressBar.Minimum; i <= (int)progressBar.Maximum; i++)
 {
 Dispatcher.Invoke(updateProgressBaDelegate, DispatcherPriority.Background, new object[] { RangeBase.ValueProperty, Convert.ToDouble(i) });
 }
 }
 }
}