NET数据库存储图片教程

[STAThread]   
      static   void   Main()     
      {   
        Application.Run(new   frmMain());   
      }   
    
      private   void   btnUpload_Click(object   sender,   System.EventArgs   e)   
      {   
        try   
        {   
          //用文件的路径信息创建一个文件对象   
          FileInfo   MyPicture=new   FileInfo(this.txtFilePath.Text);   
          //检查文件的存在性   
          if(!MyPicture.Exists)   
          {   
            MessageBox.Show("文件不存在!");   
          }   
          else   
          {   
            //检查文件的扩展名,如果不符合要求就返回   
            switch(MyPicture.Extension.ToUpper())   
            {   
              case   ".JPG":this.UpLoadImageFile(MyPicture);break;   
              case   ".GIF":this.UpLoadImageFile(MyPicture);break;   
              case   ".BMP":this.UpLoadImageFile(MyPicture);break;   
              default:MessageBox.Show("文件类型不正确!");break;   
            }   
          }   
        }   
        catch