- //byte[] 转图片
- public static Bitmap BytesToBitmap(byte[] Bytes)
- {
- MemoryStream stream = null;
- try
- {
- stream = new MemoryStream(Bytes);
- return new Bitmap((Image)new Bitmap(stream));
- }
- catch (ArgumentNullException ex)
- {
- throw ex;
- }
- catch (ArgumentException ex)
- {
- throw ex;
- }
- finally
- {
- stream.Close();
- }
- }
- //图片转byte[]
- public static byte[] BitmapToBytes(Bitmap Bitmap)
- {
- MemoryStream ms = null;
- try
- {
- ms = new MemoryStream();
- Bitmap.Save(ms, Bitmap.RawFormat);
- byte[] byteImage = new Byte[ms.Length];
- byteImage = ms.ToArray();
- return byteImage;
- }
- catch (ArgumentNullException ex)
- {
- throw ex;
- }
- finally
- {
- ms.Close();
- }
- }
- }
- =====================
- * Stream 和 byte[] 之间的转换
- * - - - - - - - - - - - - - - - - - - - - - - - */
- /// <summary>
- /// 将 Stream 转成 byte[]
- /// </summary>
- 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;
- }
- /// <summary>
- /// 将 byte[] 转成 Stream
- /// </summary>
- public Stream BytesToStream(byte[] bytes)
- {
- Stream stream = new MemoryStream(bytes);
- return stream;
- }
- /* - - - - - - - - - - - - - - - - - - - - - - - -
- * Stream 和 文件之间的转换
- * - - - - - - - - - - - - - - - - - - - - - - - */
- /// <summary>
- /// 将 Stream 写入文件
- /// </summary>
- 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();
- }
- /// <summary>
- /// 从文件读取 Stream
- /// </summary>
- 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;
- }
- //byte[] 转图片
- public static Bitmap BytesToBitmap(byte[] Bytes)
- {
- MemoryStream stream = null;
- try
- {
- stream = new MemoryStream(Bytes);
- return new Bitmap((Image)new Bitmap(stream));
- }
- catch (ArgumentNullException ex)
- {
- throw ex;
- }
- catch (ArgumentException ex)
- {
- throw ex;
- }
- finally
- {
- stream.Close();
- }
- }
- //图片转byte[]
- public static byte[] BitmapToBytes(Bitmap Bitmap)
- {
- MemoryStream ms = null;
- try
- {
- ms = new MemoryStream();
- Bitmap.Save(ms, Bitmap.RawFormat);
- byte[] byteImage = new Byte[ms.Length];
- byteImage = ms.ToArray();
- return byteImage;
- }
- catch (ArgumentNullException ex)
- {
- throw ex;
- }
- finally
- {
- ms.Close();
- }
- }
- }
- =====================
- * Stream 和 byte[] 之间的转换
- * - - - - - - - - - - - - - - - - - - - - - - - */
- /// <summary>
- /// 将 Stream 转成 byte[]
- /// </summary>
- 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;
- }
- /// <summary>
- /// 将 byte[] 转成 Stream
- /// </summary>
- public Stream BytesToStream(byte[] bytes)
- {
- Stream stream = new MemoryStream(bytes);
- return stream;
- }
- /* - - - - - - - - - - - - - - - - - - - - - - - -
- * Stream 和 文件之间的转换
- * - - - - - - - - - - - - - - - - - - - - - - - */
- /// <summary>
- /// 将 Stream 写入文件
- /// </summary>
- 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();
- }
- /// <summary>
- /// 从文件读取 Stream
- /// </summary>
- 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;
- }