/* - - - - - - - - - - - - - - - - - - - - - - - - * Stream 和 byte[] 之间的转换 * - - - - - - - - - - - - - - - - - - - - - - - */ /// 
 /// 将 Stream 转成 byte[] /// 
 public byte[] StreamToBytes(Stream stream) { byte[] bytes = new byte[stream.Length]; stream.Read(bytes, 0, bytes.Length); // 设置当前流的位置为流的开始 stream.Seek(0, SeekOrigin.Begin); return bytes; } /// 
 /// 将 byte[] 转成 Stream /// 
 public Stream BytesToStream(byte[] bytes) { Stream stream = new MemoryStream(bytes); return stream; } /* - - - - - - - - - - - - - - - - - - - - - - - - * Stream 和 文件之间的转换 * - - - - - - - - - - - - - - - - - - - - - - - */ /// 
 /// 将 Stream 写入文件 /// 
 public void StreamToFile(Stream stream,string fileName) { // 把 Stream 转换成 byte[] byte[] bytes = new byte[stream.Length]; stream.Read(bytes, 0, bytes.Length); // 设置当前流的位置为流的开始 stream.Seek(0, SeekOrigin.Begin); // 把 byte[] 写入文件 FileStream fs = new FileStream(fileName, FileMode.Create); BinaryWriter bw = new BinaryWriter(fs); bw.Write(bytes); bw.Close(); fs.Close(); } /// 
 /// 从文件读取 Stream /// 
 public Stream FileToStream(string fileName) { // 打开文件 FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read); // 读取文件的 byte[] byte[] bytes = new byte[fileStream.Length]; fileStream.Read(bytes, 0, bytes.Length); fileStream.Close(); // 把 byte[] 转换成 Stream Stream stream = new MemoryStream(bytes); return stream; }