UWP - ImageBrush full path to ImageSource

问题

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.

I've tried to add:

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

• C:\\Users\\someuser\\Pictures\\untitled.png which came from FilePicker

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

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

回答1:

You have to open the file first using 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
    };
}

来源：https://stackoverflow.com/questions/36736728/uwp-imagebrush-full-path-to-imagesource