C# Byte[]、Image、Bitmap 之间的相互转换

https://my.oschina.net/smartsmile/blog/814810

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//Image转换Bitmap         //1. Bitmap img = new Bitmap(imgSelect.Image);         //2. Bitmap bmp = (Bitmap)pictureBox1.Image;           /// <summary>         /// 将图片Image转换成Byte[]         /// </summary>         /// <param name="Image">image对象</param>         /// <param name="imageFormat">后缀名</param>         /// <returns></returns>         public static byte[] ImageToBytes(Image Image, System.Drawing.Imaging.ImageFormat imageFormat)         {             if (Image == null) { return null; }             byte[] data = null;             using (MemoryStream ms = new MemoryStream())             {                 using (Bitmap Bitmap = new Bitmap(Image))                 {                     Bitmap.Save(ms, imageFormat);                     ms.Position = 0;                     data = new byte[ms.Length];                     ms.Read(data, 0, Convert.ToInt32(ms.Length));                     ms.Flush();                 }             }             return data;         }           /// <summary>         /// byte[]转换成Image         /// </summary>         /// <param name="byteArrayIn">二进制图片流</param>         /// <returns>Image</returns>         public static System.Drawing.Image byteArrayToImage(byte[] byteArrayIn)         {             if (byteArrayIn == null)                 return null;             using (System.IO.MemoryStream ms = new System.IO.MemoryStream(byteArrayIn))             {                 System.Drawing.Image returnImage = System.Drawing.Image.FromStream(ms);                 ms.Flush();                 return returnImage;             }         }           /// <summary>         /// byte[] 转换 Bitmap         /// </summary>         /// <param name="Bytes">byte[]</param>         /// <returns></returns>         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();             }         }           /// <summary>         /// Bitmap转byte[]          /// </summary>         /// <param name="Bitmap">Bitmap</param>         /// <returns></returns>         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();             }         }