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[ASP.net教程]WPF好看的进度条实现浅谈(效果有点类似VS2012安装界面)


  为了界面友好,一般的操作时间较长时,都需要增加进度条提示。由于WPF自带的进度条其实不怎么好看,而且没啥视觉效果。后来,装VS2012时,发现安装过程中进度条效果不错,于是上网查了资料。学习了ModernUI(开源的),地址:https://github.com/firstfloorsoftware/mui。

  后来,做了尝试写了个Demo,效果不错。另外,专门录制了tif文件,方便大家看到效果。废话不多说,先展示效果:

一、效果展示

  A、VS2012安装界面图;

         

  B、个人尝试Demo效果图: 

       

二、实现说明

  1、下载MUI相关代码或者dll文件;

  2、工程中引入该dll,并引入其资源文件;

<Application.Resources>    <ResourceDictionary>      <ResourceDictionary.MergedDictionaries>        <ResourceDictionary Source="/FirstFloor.ModernUI;component/Assets/ModernUI.xaml" />        <ResourceDictionary Source="/FirstFloor.ModernUI;component/Assets/ModernUI.Light.xaml"/>      </ResourceDictionary.MergedDictionaries>    </ResourceDictionary>  </Application.Resources>

  3、在需要显示进度条的页面,加入控件(其实还是WPF控件,只是MUI扩展了其样式而已);

<Label Margin="280,169,0,0" Style="{StaticResource BackGroundContentText}" x:Name="lblMainState" HorizontalAlignment="Left" VerticalAlignment="Top">正在启动:</Label>    <ProgressBar Margin="280,200,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Width="500" Minimum="0" x:Name="ProgressControlRealValue" Maximum="1" Value="0.1" Height="16" IsIndeterminate="False"/>    <Label Margin="280,212,0,0" Style="{StaticResource BackGroundContentText}" x:Name="lblProcess" HorizontalAlignment="Left" VerticalAlignment="Top">正在加载地图数据...</Label>    <ProgressBar Margin="280,250,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Minimum="0" x:Name="ProgressControl" Width="500" Maximum="2" Height="16" IsIndeterminate="True" />

  4、后台实现,由于要根据情况更新进度文字及进度条的值。所以,这里用到了异步BackgroundWorker(具体可以网上查查相关资料);

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.ComponentModel;namespace Monitor.Class{  /// <summary>  /// 异步操作  /// </summary>  public class CWorker  {    /// <summary>    /// 对象    /// </summary>    private BackgroundWorker backgroundWorker;    /// <summary>    /// 后台执行的操作    /// </summary>    public Action BackgroundWork { get; set; }    /// <summary>    /// 后台任务执行完毕后事件    /// </summary>    public event EventHandler<BackgroundWorkerEventArgs> BackgroundWorkerCompleted;    private BackgroundWorkerEventArgs _eventArgs;//异常参数    /// <summary>    /// 构造    /// </summary>    public CWorker()    {      _eventArgs = new BackgroundWorkerEventArgs();      backgroundWorker = new BackgroundWorker();      backgroundWorker.WorkerReportsProgress = true;      backgroundWorker.WorkerSupportsCancellation = true;      backgroundWorker.DoWork += new DoWorkEventHandler(backgroundWorker1_DoWork);      backgroundWorker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);    }    /// <summary>    /// 开始工作    /// </summary>    public void BegionWork()    {      if (backgroundWorker.IsBusy)        return;      backgroundWorker.RunWorkerAsync();    }    /// <summary>    /// 工作    /// </summary>    /// <param name="sender"></param>    /// <param name="e"></param>    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)    {      if (BackgroundWork != null)      {        try        {          BackgroundWork();        }        catch (Exception ex)        {          _eventArgs.BackGroundException = ex;        }      }    }    /// <summary>    /// 完成    /// </summary>    /// <param name="sender"></param>    /// <param name="e"></param>    private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)    {      if (this.BackgroundWorkerCompleted != null)      {        this.BackgroundWorkerCompleted(null, _eventArgs);      }    }  }  /// <summary>  /// 事件  /// </summary>  public class BackgroundWorkerEventArgs : EventArgs  {    /// <summary>    /// 后台程序运行时抛出的异常    /// </summary>    public Exception BackGroundException { get; set; }  }}

namespace Monitor{  /// <summary>  /// Splash.xaml 的交互逻辑  /// </summary>  public partial class Splash : Window  {    MainWindow m_MainWindow = null;//主窗口    CWorker m_Work = null;//任务    public Splash()    {      InitializeComponent();      m_MainWindow = new MainWindow();//创建主窗口对象      m_Work = new CWorker();      m_Work.BackgroundWork = this.ProcessDo;      m_Work.BackgroundWorkerCompleted += new EventHandler<BackgroundWorkerEventArgs>(m_Work_BackgroundWorkerCompleted);    }    /// <summary>    /// 进度提示    /// </summary>    public void ProcessDo()    {      m_MainWindow.InitData(this);    }    /// <summary>    /// 移动    /// </summary>    /// <param name="sender"></param>    /// <param name="e"></param>    private void Grid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)    {      this.DragMove();    }    /// <summary>    /// 窗口加载    /// </summary>    /// <param name="sender"></param>    /// <param name="e"></param>    private void Window_Loaded(object sender, RoutedEventArgs e)    {      m_Work.BegionWork();    }    /// <summary>    /// 执行完成    /// </summary>    /// <param name="sender"></param>    /// <param name="e"></param>    void m_Work_BackgroundWorkerCompleted(object sender, BackgroundWorkerEventArgs e)    {      m_MainWindow.Show();      this.Close();    }    /// <summary>    /// 赋值    /// </summary>    /// <param name="text"></param>    private delegate void SetProcessLabelDelegate(string text, double processValue);    public void SetProcessValue(string text, double processValue)    {      if (!Dispatcher.CheckAccess())      {        Dispatcher.Invoke(DispatcherPriority.Send, new SetProcessLabelDelegate(SetProcessValue), text, processValue);        return;      }      this.lblProcess.Content = text;      this.ProgressControlRealValue.Value = processValue;    }  }}