C# Base64加解密图片

代码  1    //  读取图片信息并用pictureBox显示  2                   byte [] imageBytes = Convert.FromBase64String(str_picture);  3                  MemoryStream memoryStream  =   new  MemoryStream(imageBytes,  0 , imageBytes.Length);  4                  memoryStream.Write(imageBytes,  0 , imageBytes.Length);  5                  Image image  =  Image.FromStream(memoryStream);  6                  memoryStream.Close();  7   8                   //  将图片放置在 PictureBox 中  9                   this .pictureBox1.SizeMode  =  PictureBoxSizeMode.Zoom; 10                   this .pictureBox1.Image  =  image; 11  12  // 将选中图片进行Base64加密 13                  OpenFileDialog openfile  =   new  OpenFileDialog(); 14                  openfile.Title  =   " 请为商品选择相应的图片 " ; 15                  openfile.Filter  =   " 商品图片                      (*.jpg;*.bmp;*png)|*.jpeg;*.jpg;*.bmp;*.png|AllFiles(*.*)|*.* " ; 16                   if  (DialogResult.OK  ==  openfile.ShowDialog()) 17                  { 18                      try 19                    { 20                      Bitmap bmp  =   new  Bitmap(openfile.FileName); 21                      pictureBox1.Image  =  bmp; 22                      pictureBox1.SizeMode  =  PictureBoxSizeMode.Zoom; 23                      MemoryStream ms  =   new  MemoryStream(); 24                      bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); 25                       byte [] arr  =   new   byte [ms.Length]; 26                      ms.Position  =   0 ; 27                      ms.Read(arr,  0 , ( int )ms.Length); 28                      ms.Close(); 29                      str_picture  =  Convert.ToBase64String(arr); 30                     } 31                     catch  { } 32                     }

 

转载于:https://www.cnblogs.com/angleSJW/archive/2010/03/16/1687457.html

相关资源：VB C# 图片 文字 加密 解密 base64