Stream 和 byte[] 之间的转换

1.Stream转byte[]，注意设置当前流的位置为流的开始

                        Stream saveStream = new MemoryStream();
                        doc.SaveToStream(saveStream, FileFormat.Auto);
                        // 设置当前流的位置为流的开始
                        saveStream.Seek(0, SeekOrigin.Begin);
                        byte[] fileContent = new byte[saveStream.Length];
                        saveStream.Read(fileContent, 0, fileContent.Length);
                        saveStream.Dispose();

2.byte[]转Stream

var  bytes =new bytes[length];
Stream stream = new MemoryStream(bytes);