在UWP 将BitmapImage转换为 WriteableBitmap

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原文: How to convert BitmapImage to WriteableBitmap in Universal application for windows 10?

您可以直接从文件将图像加载到WriteableBitmap对象。var filePicker = new FileOpenPicker();
filePicker.FileTypeFilter.Add(".jpg");
var result = await filePicker.PickSingleFileAsync();if (result != null)
{using (IRandomAccessStream stream = await result.OpenAsync(FileAccessMode.Read)){BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream);WriteableBitmap bmp = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);bmp.SetSource(stream);// show the image in the UI if you want.MyImage.Source = bmp;}
}
这样你可以使用WriteableBitmap，你可以使用WriteableBitmapEx库。