将BitmapImage加载到WriteableBitmap中，但不存在任何方法 [英] Load BitmapImage into WriteableBitmap but no method existing

问题描述

在Windows 8中，WriteableBitmap类的构造函数仅采用两个参数:该对象的高度和宽度.同时，对于Silverlight，它接受BitmapImage对象作为参数. (在MSDN上验证: WriteableBitmap.WriteableBitmap构造函数)

The constructor of WriteableBitmap class with Windows 8 only takes two arguments: the height and the width of this object. Meanwhile with Silverlight it accepts a BitmapImage object as argument. (Verified on MSDN : WriteableBitmap.WriteableBitmap constructor)

我想加载此BitmapImage，因为我试图模糊我的Assets文件夹中已经存在的图像.

I would like to load this BitmapImage because I'm trying to blur an image which already exists on my Assets folder.

推荐答案

感谢您的帮助，我成功使我的形象模糊了.这是为了将BitmapImage链接到WriteableBitmap对象的示例:

Thanks for your help, I succeed to blur my image. Here is the sample in order to link the BitmapImage into the WriteableBitmap object :

BitmapImage bi = new BitmapImage(new Uri(filename, UriKind.RelativeOrAbsolute));
WriteableBitmap wb = new WriteableBitmap(bi.PixelWidth, bi.PixelHeight);

var streamFile = await GetFileStream(myFile);
await wb.SetSourceAsync(streamFile);
wb = wb.Convolute(WriteableBitmapExtensions.KernelGaussianBlur5x5);

然后只需将WriteableBitmap写入LocalStorage！

Then just write the WriteableBitmap into the LocalStorage !

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