c# wpf 进度条 圆形
时间: 2023-12-07 12:37:53 浏览: 194
以下是使用C# WPF实现圆形进度条的代码示例:
```csharp
<Window x:Class="CircularProgressBar.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Circular Progress Bar" Height="350" Width="350">
<Grid>
<Ellipse Width="100" Height="100" Stroke="Gray" StrokeThickness="10">
<Ellipse.Clip>
<EllipseGeometry Center="50,50" RadiusX="45" RadiusY="45"/>
</Ellipse.Clip>
</Ellipse>
<Path x:Name="progressIndicator" Stroke="Blue" StrokeThickness="10">
<Path.Data>
<PathGeometry>
<PathFigure x:Name="progressFigure" StartPoint="50,5">
<ArcSegment x:Name="progressArc" Point="50,5" Size="45,45" SweepDirection="Clockwise"/>
</PathFigure>
</PathGeometry>
</Path.Data>
</Path>
</Grid>
</Window>
```
在代码中,我们使用了一个`Ellipse`元素来绘制圆形进度条的背景,使用`Path`元素来绘制进度条的前景。`Path`元素中的`PathFigure`和`ArcSegment`元素用于绘制圆弧。
接下来,我们需要在C#代码中实现进度条的动态效果。我们可以使用`Storyboard`和`DoubleAnimation`来实现进度条的动态效果。以下是C#代码示例:
```csharp
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
Loaded += MainWindow_Loaded;
}
private void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
var storyboard = new Storyboard();
var animation = new DoubleAnimation(0, 360, new Duration(TimeSpan.FromSeconds(5)));
Storyboard.SetTarget(animation, progressArc);
Storyboard.SetTargetProperty(animation, new PropertyPath(ArcSegment.EndAngleProperty));
storyboard.Children.Add(animation);
storyboard.Begin();
}
}
```
在代码中,我们创建了一个`Storyboard`对象,并使用`DoubleAnimation`来实现进度条的动态效果。`Storyboard.SetTarget`和`Storyboard.SetTargetProperty`方法用于将动画应用到`progressArc`元素的`EndAngle`属性上。最后,我们调用`storyboard.Begin()`方法来启动动画。
阅读全文