image - 将随机图像保存并加载到隔离存储

Question

我在我的项目中添加了一些图片（png），并在 stackpanel 加载了一个随机图像。我想将该图像保存到独立存储并从中加载，但是我如何保存随机图像？？？

Answer 1

使用此代码将图像字节流保存到 IS：

            using (IsolatedStorageFileStream fileStream = new IsolatedStorageFileStream(tempJPEG, FileMode.Create, myIsolatedStorage))
            {
                using (BinaryWriter writer = new BinaryWriter(fileStream))
                {
                    Stream resourceStream = new MemoryStream(imageData); //Byte[] imageData
                    long length = resourceStream.Length;
                    byte[] buffer = new byte[32];
                    int readCount = 0;

                    using (resourceStream)
                    {   
                        resourceStream.Seek(0, SeekOrigin.Begin);

                        // Read file in chunks in order to reduce memory consumption and increase performance
                        while (readCount < length)
                        {
                            int actual = resourceStream.Read(buffer, 0, buffer.Length);
                            readCount += actual;
                            writer.Write(buffer, 0, actual);
                        }
                    }
                }

                fileStream.Close();
            }