c# 情节提要 Begin() 不触发
本文关键字:Begin | 更新日期: 2023-09-27 18:32:35
我通过<Viewbox>
在画布上有大约 50 个<Path>
元素。<Viewbox>
也是嵌套的。我想更改<Path>
的位置与传感器数据位置匹配时的不透明度。代码一直工作到 Begin() 方法。它不会给出错误,也不会做任何事情。我还尝试创建不同的NameScopes
但无法确定正确的 namspace。除this
以外的任何内容都不会进入 Begin() 方法。如果我在 if 语句中创建一个新的 Scope:"if (wantedNode is System.Windows.Shapes.Path)
",它会进入 Begin() 一次,不会触发,并且永远不会回来!
if (angle > 0)
{
if (angle <= 180 && angle > 150)
{
if (mag <= sweetSpot)
{
//posAlertTxt.Text = "On target...";
}
else if (mag <= step)
{
selectedStep = "step0108";
}
else if (mag <= step * 2)
.
.
.
.
在涵盖所有角度和幅度之后:
redBrush.Color = Colors.IndianRed;
System.Windows.Media.Animation.DoubleAnimation opacityAnimation = new System.Windows.Media.Animation.DoubleAnimation();
opacityAnimation.To = 1.0;
opacityAnimation.Duration = TimeSpan.FromSeconds(1);
opacityAnimation.AutoReverse = true;
RegisterName("redBrush", redBrush);
Storyboard sb = new System.Windows.Media.Animation.Storyboard();
Storyboard.SetTargetName(opacityAnimation, "redBrush");
Storyboard.SetTargetProperty(opacityAnimation, new PropertyPath(SolidColorBrush.OpacityProperty));
sb.Children.Add(opacityAnimation);
object wantedNode = indicatorBounds.FindName(selectedStep);
if (wantedNode is System.Windows.Shapes.Path){
System.Windows.Shapes.Path wantedChild = wantedNode as System.Windows.Shapes.Path;
wantedChild.Fill = redBrush;
//System.Diagnostics.Debug.WriteLine(wantedChild.Opacity);
sb.Begin(this);
最后,XAML :
.
.
.
.
<Viewbox Name="forceGradientContainer" Width="126" Height="457"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Canvas.Left="117" Canvas.Top="17">
<Canvas Name="indicatorBounds" Width="126.378" Height="457.004">
<Canvas Name="holder">
.
.
.
.
<Path Fill="IndianRed" Opacity="0" x:Name="step0108" Data="F1 M 28.802,209.027 L 49.252,221.067 C 47.922,223.377 47.162,226.057 47.162,228.917 L 23.432,228.917 C 23.432,221.667 25.392,214.867 28.802,209.027 Z"/>`
.
.
.
</Canvas>
</Canvas>
</Viewbox>
试试
Storyboard.SetTarget(opacityAnimation, redBrush);
而不是
RegisterName("redBrush", redBrush);
Storyboard.SetTargetName(opacityAnimation, "redBrush");
为什么不对元素本身的不透明度进行动画处理呢?
Storyboard.SetTarget(opacityAnimation, wantedChild);
Storyboard.SetTargetProperty(opacityAnimation, new PropertyPath("Opacity"));