[英]Adding animation to an ellipse that I've created in code c# wpf
我在代碼中創建了多個橢圓並添加了 MouseEnter 和 Leave 事件。 我的問題是,當我使用 cursor 進入橢圓時,它會改變整個 window 的不透明度,而不僅僅是那個橢圓。
在這里,我創建了橢圓:
for (int i = 0; i < L2.Count; i++)
{
Ellipse myEllipse = new Ellipse();
myEllipse.Opacity = .5;
myEllipse.MouseEnter += MyEllipse_MouseEnter;
myEllipse.MouseLeave += MyEllipse_MouseLeave;
users_profiles.Children.Add(myEllipse);
}
和事件:
private void MyEllipse_MouseLeave(object sender, MouseEventArgs e)
{
DoubleAnimation open_an = new DoubleAnimation();
open_an.From = 1;
open_an.To = .5;
open_an.Duration = TimeSpan.FromSeconds(.3);
BeginAnimation(OpacityProperty, open_an); // this.BeginAnimation(...) has the same result.
}
它改變了整個 window 的不透明度
顯然,因為您在 MainWindow 實例上調用BeginAnimation
。
從 sender 參數中獲取 Ellipse:
private void MyEllipse_MouseLeave(object sender, MouseEventArgs e)
{
var ellipse = (Ellipse)sender;
var open_an = new DoubleAnimation
{
From = 1,
To = .5,
Duration = TimeSpan.FromSeconds(.3)
};
ellipse.BeginAnimation(UIElement.OpacityProperty, open_an);
}
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