Question

我正在尝试将图像保存，即存在于我的项目中的隔离存储中。我尝试使用以下代码，但它抛出System.NullReferenceException。

IsolatedStorageFileStream fileStream1 = myIsolatedStorage.CreateFile("shared/shellcontent/image.jpg");
Uri uri = new Uri(@"/myapp;/component/contact.bmp", UriKind.Relative);
                    BitmapImage bitmapImage = new BitmapImage();
                    bitmapImage.UriSource = uri;
                    WriteableBitmap wb = new WriteableBitmap(bitmapImage); //throwing exception
                    Extensions.SaveJpeg(wb, fileStream1, wb.PixelWidth, wb.PixelHeight, 0, 85);

我也尝试了jpg图像。复制到输出目录设置为从不复制。还尝试将构建操作设置为内容

............. 刚试过这段代码，现在没有显示异常，但仍然在设置为平铺背景时。它的空白

Uri uri = new Uri("contact.jpg", UriKind.Relative);
                    StreamResourceInfo sri = null;
                    sri = Application.GetResourceStream(uri);
                    BitmapImage bitmapImage = new BitmapImage();
                    bitmapImage.SetSource(sri.Stream);
                    WriteableBitmap wb = new WriteableBitmap(bitmapImage);
                    Extensions.SaveJpeg(wb, fileStream1, wb.PixelWidth, wb.PixelHeight, 0, 85);

更新：问题已解决。文件流未关闭。傻了我

将资源图像存储到Isolatedstorage抛出System.NullReferenceException

0 个答案: