WPF实现进度条实时更新效果

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原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文实例为大家分享了WPF实现一个实时更新的进度条，供大家参考，具体内容如下

效果图

xaml代码

<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>

后台代码

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) });
      }
    }
  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持极客世界。