Byte[]、Image、Bitmap_之间的相互转换

1.将图片Image转换成Byte[]

///
<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;

}

2. byte[]转换成Image

/// <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;
              
}
           }

3.  Image转换Bitmap

//Image转换Bitmap

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

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

4. Bitmap转换成Image

//Bitmap转换成Image

using System.IO;

private static System.Windows.Controls.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 ;
       }

5. byte[] 转换 Bitmap

//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();
           }
       } 
6. Bitmap转byte[] 
    //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();
           }
       }
   }