使用 .NET 在 Windows 中创建弹出式 toastr 通知

WPF让这件事变得非常简单:它可能需要10分钟或更少的时间.以下是步骤:

1. 创建一个窗口，设置AllowTransparency="true"并向其添加网格
2. 将网格的RenderTransform设置为原点为0，1的ScaleTransform
3. 在网格上创建一个动画，将ScaleX动画设置为0到1，然后再将不透明度设置为1到0
4. 在构造函数计算窗口中.顶部和windows .Left可将窗口置于屏幕的右下角.

这就是全部.

使用Expression Blend，我花了大约8分钟生成以下工作代码:

<Window
    x:Class="NotificationWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="Notification Popup" Width="300" SizeToContent="Height"
  WindowStyle="None" AllowsTransparency="True" Background="Transparent">

  <Grid RenderTransformOrigin="0,1" >

    <!-- Notification area -->
    <Border BorderThickness="1" Background="Beige" BorderBrush="Black" CornerRadius="10">
      <StackPanel Margin="20">
        <TextBlock TextWrapping="Wrap" Margin="5">
          <Bold>Notification data</Bold><LineBreak /><LineBreak />
          Something just happened and you are being notified of it.
        </TextBlock>
        <CheckBox Content="Checkable" Margin="5 5 0 5" />
        <Button Content="Clickable" HorizontalAlignment="Center" />
      </StackPanel>
    </Border>

    <!-- Animation -->
    <Grid.Triggers>
      <EventTrigger RoutedEvent="FrameworkElement.Loaded">
        <BeginStoryboard>
          <Storyboard>
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(ScaleTransform.ScaleY)">
              <SplineDoubleKeyFrame KeyTime="0:0:0" Value="0"/>
              <SplineDoubleKeyFrame KeyTime="0:0:0.5" Value="1"/>
            </DoubleAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)">
              <SplineDoubleKeyFrame KeyTime="0:0:2" Value="1"/>
              <SplineDoubleKeyFrame KeyTime="0:0:4" Value="0"/>
            </DoubleAnimationUsingKeyFrames>
          </Storyboard>
        </BeginStoryboard>
      </EventTrigger>
    </Grid.Triggers>

    <Grid.RenderTransform>
      <ScaleTransform ScaleY="1" />
    </Grid.RenderTransform>

  </Grid>

</Window>

代码隐藏:

using System;
using System.Windows;
using System.Windows.Threading;

public partial class NotificationWindow
{
  public NotificationWindow()
  {
    InitializeComponent();

    Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, new Action(() =>
    {
      var workingArea = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea;
      var transform = PresentationSource.FromVisual(this).CompositionTarget.TransformFromDevice;
      var corner = transform.Transform(new Point(workingArea.Right, workingArea.Bottom));

      this.Left = corner.X - this.ActualWidth - 100;
      this.Top = corner.Y - this.ActualHeight;
    }));
  }
}

因为WPF是常规的.NET库，答案是肯定的，使用"常规的.NET库"可以实现这一点.

如果你问是否有不使用WPF的方法，答案仍然是肯定的，但它非常复杂，需要5天而不是5分钟.