UWP - ImageBrush 到 ImageSource 的完整路径 [英] UWP - ImageBrush full path to ImageSource

问题描述

我有一个椭圆，我想用图像填充它.我想将图像的完整路径设置为 ImageBrush 的 ImageSource 属性.但我没能完成它.

I have an ellipse and I want to fill it with image. And I would like to set full path to the image to ImageSource property of ImageBrush. But I wasn't able to accomplish it.

我尝试添加:

• C:/Users/someuser/Pictures/untitled.png

C:\\Users\\someuser\\Pictures\\untitled.png 来自 FilePicker

C:\Users\misko\Pictures\untitled.png.

但这些都不起作用.你能向我解释一下如何正确设置完整路径吗?

But non of this works. Can you please explain to me how to properly set full path?

推荐答案

您必须先使用 FilePicker

if (file != null)
{
    var stream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);

    var bitmapImage = new Windows.UI.Xaml.Media.Imaging.BitmapImage();
    await bitmapImage.SetSourceAsync(stream);

    var decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(stream);

    grid.Background = new ImageBrush
    {

        ImageSource = bitmapImage
    };
}

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