/// <summary>

         /// 为图片生成缩略图 by 何问起

         /// </summary>

         /// <param name="phyPath">原图片的路径</param>

         /// <param name="width">缩略图宽</param>

         /// <param name="height">缩略图高</param>

         /// <returns></returns>

         public System.Drawing.Image GetHvtThumbnail(System.Drawing.Image image, int width, int height)

         {

           //代码是从开源项目HoverTreeCMS中获取的

           //更多信息请参考：http://hovertree.com/menu/hovertreecms/

             Bitmap m_hovertreeBmp = new Bitmap(width, height);

             //从Bitmap创建一个System.Drawing.Graphics

             Graphics m_HvtGr = Graphics.FromImage(m_hovertreeBmp);

             //设置

             m_HvtGr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

             //下面这个也设成高质量

             m_HvtGr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;

             //下面这个设成High

             m_HvtGr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;

             //把原始图像绘制成上面所设置宽高的缩小图

             Rectangle rectDestination = new Rectangle(, , width, height);

             int m_width, m_height;

             if (image.Width * height > image.Height * width)

             {

                 m_height = image.Height;

                 m_width = (image.Height * width) / height;

             }

             else

             {

                 m_width = image.Width;

                 m_height = (image.Width * height) / width;

             }

             m_HvtGr.DrawImage(image, rectDestination, , , m_width, m_height, GraphicsUnit.Pixel);

             return m_hovertreeBmp;

         }