如何从代码后台更改资源中的矢量颜色
如何从代码后台更改资源中的矢量颜色
提问于 2018-06-05 03:43:59
我如何从后面的代码中更改矢量颜色？此示例中的代码不起作用。
从资源字典..
<VisualBrush x:Key="Alarm-Light">
<VisualBrush.Visual>
<Canvas>
<Path Data="M12,22A10,10 0 0,1 2,12A10,10 0 0,1 12,2A10,10 0 0,1 22,12A10,10 0 0,1 12,22M12,7L7,12H10V16H14V12H17L12,7Z" Fill="#424242" />
</Canvas>
</VisualBrush.Visual>
</VisualBrush>从Xaml..
<TextBlock x:Name="TextConnect" Width="20">
<Rectangle x:Name="AlarmLight" Fill="{StaticResource Alarm-Light}" Height="16" Width="16" />
代码隐藏...
private void Connection_Check()
{
var brush = LocalSystem.Connected ? new SolidColorBrush(Colors.GreenYellow) : new SolidColorBrush(Colors.DimGray);
AlarmLight.Fill = brush;
}回答 1
Stack Overflow用户
回答已采纳
发布于 2018-06-05 05:06:43
这是可行的：
<VisualBrush x:Key="Alarm-Light">
<VisualBrush.Visual>
<Canvas>
<Path Fill="{Binding RelativeSource={RelativeSource AncestorType={x:Type Window}}, Path=AlarmFill}" Data="M12,22A10,10 0 0,1 2,12A10,10 0 0,1 12,2A10,10 0 0,1 22,12A10,10 0 0,1 12,22M12,7L7,12H10V16H14V12H17L12,7Z" />
</Canvas>
</VisualBrush.Visual>
</VisualBrush>使用下面的代码：
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
AlarmFill = new SolidColorBrush(Colors.Blue);
}
/// <summary>
/// Gets or Sets AlarmFill Dependency Property
/// </summary>
public Brush AlarmFill
{
get { return (Brush)GetValue(AlarmFillProperty); }
set { SetValue(AlarmFillProperty, value); }
}
public static readonly DependencyProperty AlarmFillProperty =
DependencyProperty.Register("AlarmFill", typeof(Brush), typeof(MainWindow), new PropertyMetadata(null));
}或者这个：
<VisualBrush x:Key="Alarm-Light">
<VisualBrush.Visual>
<Canvas>
<Path Fill="{Binding RelativeSource={RelativeSource AncestorType={x:Type Window}}, Path=DataContext.AlarmFill}" Data="M12,22A10,10 0 0,1 2,12A10,10 0 0,1 12,2A10,10 0 0,1 22,12A10,10 0 0,1 12,22M12,7L7,12H10V16H14V12H17L12,7Z" />
</Canvas>
</VisualBrush.Visual>
</VisualBrush>使用下面的代码：
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataContext = this;
AlarmFill = new SolidColorBrush(Colors.Blue);
}
/// <summary>
/// Gets or Sets AlarmFill Dependency Property
/// </summary>
public Brush AlarmFill
{
get { return (Brush)GetValue(AlarmFillProperty); }
set { SetValue(AlarmFillProperty, value); }
}
public static readonly DependencyProperty AlarmFillProperty =
DependencyProperty.Register("AlarmFill", typeof(Brush), typeof(MainWindow), new PropertyMetadata(null));
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/50687739
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