如何在 WPF C# 中三秒后在两个视图之间移动? [英] How to move between two views after three seconds in WPF C#?

问题描述

我目前正在处理一个项目，我有一个图像，我想显示 3 秒钟，然后在剩下的运行中隐藏它并显示主网格.

I am currently working on a project and I have an image which I want to show for 3 seconds, and then hide it for the rest of the run and show the main grid.

我尝试做的是将主网格放在子网格中，不透明度为 0 或 Visibility = Visibility.Hidden，并在公共 MainWindow() {} 方法的代码后面实现一个秒表.当我尝试 if 语句时:if (stopwatch.ElapsedMilliseconds > 3000) {Change Opacity}，我还没有达到条件并与第一个窗口堆叠.当我尝试使用 while 方法时，只需添加一个空的 while 循环，三秒钟内什么都没有显示，然后我立即看到了主网格.

What I tried to do is to put the main grid in a sub grid, with opacity 0 or Visibility = Visibility.Hidden, and implement a stopwatch in the code behind of the public MainWindow() {} Method. When I tried an if Statement: if (stopwatch.ElapsedMilliseconds > 3000) {Change Opacity}, I haven't reached the condition and stacked with the first window. When I tried a while approach, by simply adding an empty while loop, nothing was shown up for three seconds, and then I am seeing the main grid straight away.

我怎样才能得到想要的结果?

How can I get the desired result?

提前致谢！

public MainWindow()
        {
            InitializeComponent();

            ViewModel = (Application.Current as App).VM;
            DataContext = ViewModel;
            Dashboard.DataContext = ViewModel;

            this.Loaded += new RoutedEventHandler(MainWindow_Loaded);
            this.Loaded += new RoutedEventHandler(myMediaElement_MediaEnded);

            TimeGrinder();
            Page1.Opacity = 0;
            MainGrid.Opacity = 100;
        }

        public void TimeGrinder()
        {
            var stopWatch = new Stopwatch();
            stopWatch.Start();
            while (stopWatch.ElapsedMilliseconds < 3000) { }
            return;
        }

推荐答案

可能有帮助:

using System.Threading;

...

private async void HideGrid()
{
    Page1.Opacity = 0;
    MainGrid.Opacity = 100;
    await Task.Delay(3000);
    //await Task.Run(() => Thread.Sleep(3000));
    Page1.Opacity = 100;
    MainGrid.Opacity = 0;
}

按照@aepot 建议编辑

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