bia*_*bit 27 c# wpf background-image
我有几个图像配置为应用程序资源.
当我的应用程序启动时,主窗口的背景是通过XAML设置的:
<Window.Background>
<ImageBrush ImageSource="/myapp;component/Images/icon.png" />
</Window.Background>
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如果发生给定事件,我想将此背景更改为另一个资源("/myapp;component/Images/icon_gray.png").
我尝试过使用两个常量:
private static readonly ImageBrush ENABLED_BACKGROUND =
new ImageBrush(new BitmapImage(new Uri("/myapp;component/Images/icon.png")));
private static readonly ImageBrush DISABLED_BACKGROUND =
new ImageBrush(new BitmapImage(new Uri("/myapp;component/Images/icon_gray.png")));
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...但很自然地,我得到一个带有无效URI的例外.
有没有一种简单的方法来this.Background = ...使用包Uri或资源(即:) 更改WPF窗口的背景图像(via Myapp.Properties.Resources.icon)?
Dar*_*nda 39
那这个呢:
new ImageBrush(new BitmapImage(new Uri(BaseUriHelper.GetBaseUri(this), "Images/icon.png")))
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或者,这个:
this.Background = new ImageBrush(new BitmapImage(new Uri(@"pack://application:,,,/myapp;component/Images/icon.png")));
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这里是XAML版本
<Window.Background>
<ImageBrush>
<ImageBrush.ImageSource>
<BitmapImage UriSource="//your source .."/>
</ImageBrush.ImageSource>
</ImageBrush>
</Window.Background>
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问题是你在代码中使用它的方式.试试下面的代码吧
public partial class MainView : Window
{
public MainView()
{
InitializeComponent();
ImageBrush myBrush = new ImageBrush();
myBrush.ImageSource =
new BitmapImage(new Uri("pack://application:,,,/icon.jpg", UriKind.Absolute));
this.Background = myBrush;
}
}
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您可以在http://msdn.microsoft.com/en-us/library/aa970069.aspx中找到有关此内容的更多详细信息.