一.前台页面代码:

            
    
        
         
    
    
    
        
             
             
             
             
     去黑边        
             
     矫正    
    

二.后台处方法: (本方法写在了页面上)

HttpFileCollection files = this.Request.Files;       if (files.Count > 0)       {           for (int i = 0; i < files.Count; i++)           {               System.IO.Stream stream = files[i].InputStream;               string fileFullName = files[i].FileName;               int index = fileFullName.LastIndexOf("\\");               string fileName = fileFullName.Substring(index + 1);               //得到指定上传文件的字节输入流                  int imgDataLen = (int)(stream.Length);               byte[] imgData = new byte[imgDataLen];               int n = stream.Read(imgData, 0, imgDataLen);               stream.Close();               System.IO.FileStream myFileStream = new System.IO.FileStream(Server.MapPath(fileName),                    System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write);               myFileStream.Write(imgData, 0, imgDataLen);               myFileStream.Flush();               myFileStream.Close();           }                  }     %>