WPF刷新界面

最新推荐文章于 2024-02-13 22:00:44 发布

ayouayouwei

最新推荐文章于 2024-02-13 22:00:44 发布

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分类专栏： c# 文章标签： wpf

原文链接：https://www.cnblogs.com/FengShenMeng/p/6054571.html

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Winform 里有 Application.DoEvents();可刷新！

WPF 里没这个，尽管可用委托实现多线程，但是刷新还是不行！

后来找到了类似App.DoEvents()的方法（）；

代码：

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Windows;

using System.Text;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Threading;
using System.Windows.Threading;

namespace wgscd
{

public partial class App : Application
{
    private static DispatcherOperationCallback exitFrameCallback = new DispatcherOperationCallback(ExitFrame);
    public static void DoEvents()
    {
        DispatcherFrame nestedFrame = new DispatcherFrame();
        DispatcherOperation exitOperation =  Dispatcher.CurrentDispatcher.BeginInvoke (DispatcherPriority.Background, exitFrameCallback, nestedFrame);
        Dispatcher.PushFrame(nestedFrame);
        if (exitOperation.Status !=
        DispatcherOperationStatus.Completed)
        {
            exitOperation.Abort();
        }
    }

    private static Object ExitFrame (Object state)
    {
        DispatcherFrame frame = state as
        DispatcherFrame;
        frame.Continue = false;
        return null;
    }


}

}

这样在需要调用刷新的地方就可:App.DoEvents();