从后面的代码附加 Image/ImageBrush [英] Attach Image/ImageBrush from code behind
问题描述
我正在尝试添加图像作为 UserControl 的背景.根据变量的值,我需要更改背景,但无论我使用什么路径或 Uri 格式,背景都不会改变.
I'm trying to add an Image as the background of a UserControl. Depending on the value of a variable I need to change that background but whatever the path or Uri format I use, the background does not change.
我在 stackoverflow 中看到了很多问题,但没有一个能解决我的一个问题.我让下面的代码:
I've seen lots of questions here in stackoverflow but none fixes my single problem. I let the code below:
if (callback.liveUvis.ContainsUVI(uvi))
{
this.Status.Text = "LIVE";
ImageBrush imgB = new ImageBrush();
BitmapImage btpImg = new BitmapImage();
btpImg.UriSource = new Uri(@"///IMG///Live///bck_frame_info_video_live.png", UriKind.Relative);
//imgB.ImageSource = new BitmapImage(new Uri("~/IMG/Live/bck_frame_info_video_live.png", UriKind.RelativeOrAbsolute));
//imgB.ImageSource = new BitmapImage(new Uri("ms-appx:///IMG/Live/bck_frame_info_video_live.png"));
imgB.ImageSource = btpImg;
this.Background = imgB;
}
我在尝试附加图像时面临同样的问题......我想这也取决于 Uri 格式,但我也让代码以防万一:)
I'm facing the same problem when trying to attach an image... I guess it's up to the Uri format also, but I let the code too just in case :)
private void setIcon_Desc(string dd)
{
try
{
Image img = new Image();
img.Source = new BitmapImage(new Uri(this.BaseUri, "IMG/pictos_small/white/160dpi/" + dd + ".png"));
img.Stretch = Stretch.None;
this.Icon = img;
this.Sport.Text = callback.disc.getDescription(dd).ToUpper();
}
catch(Exception ex)
{
callback.exception.writeExceptions(ex);
}
}
提前致谢!
推荐答案
我可以在更改用户控件的背景时重现您的问题.
I can reproduce your issue when changing the background of a user control.
我目前使用的解决方法是更改控件中根 UIElement 的背景.
The current workaround I used was changing the background of root UIElement in the control.
<Grid x:Name="container">
<Grid.Background>
<ImageBrush Stretch="Fill" ImageSource="Images/bg-blue.png"/>
</Grid.Background>
<StackPanel>
<TextBlock>Hello World</TextBlock>
<Button Click="Button_Click">Change Background</Button>
<Image x:Name="display"></Image>
</StackPanel>
</Grid>
public sealed partial class MyUserControl : UserControl
{
public MyUserControl()
{
this.InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
ImageBrush imgB = new ImageBrush();
BitmapImage btpImg = new BitmapImage();
btpImg.UriSource = new Uri(@"ms-appx:///images/bg-light-blue.png");
imgB.ImageSource = btpImg;
container.Background = imgB;
}
}
这篇关于从后面的代码附加 Image/ImageBrush的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!