Byte[]、Image、Bitmap 之间的相互转换

/// <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 = http://www.cnblogs.com/peasana/archive/2012/02/13/null;
           using (MemoryStream ms= new MemoryStream())

           {

                using (Bitmap Bitmap = new Bitmap(Image))

               {

                    Bitmap.Save(ms, imageFormat);

                   ms.Position = 0;

                    data = http://www.cnblogs.com/peasana/archive/2012/02/13/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;

               }

           }

    //Image转换Bitmap

   1. Bitmap img = new Bitmap(imgSelect.Image);

   2. Bitmap bmp = (Bitmap)pictureBox1.Image;

//Bitmap转换成Image

using System.IO;

private static System.Windows.Con
4000
trols.Image Bitmap2Image(System.Drawing.Bitmap Bi)

       {          

           MemoryStream ms = new MemoryStream();

           Bi.Save(ms, System.Drawing.Imaging.ImageFormat.Png);

           BitmapImage bImage = new BitmapImage();

           bImage.BeginInit();

           bImage.StreamSource = new MemoryStream(ms.ToArray());

           bImage.EndInit();

           ms.Dispose();

           Bi.Dispose();

           System.Windows.Controls.Image i = new System.Windows.Controls.Image();

           i.Source = bImage;

           return i ;

       }

//byte[] 转换 Bitmap

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();

           }

       } 

//Bitmap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();

           }

       }

   }