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[ASP.net教程].net又一个生成缩略图的方法,不变形


生成缩略图是一个十分常用功能,找到了一个方法,重写部分代码,实用又好用,.net又一个生成缩略图的方法,不变形

 

 1     /// <summary>  2     /// 为图片生成缩略图 by 何问起 3     /// </summary>  4     /// <param name="phyPath">原图片的路径</param>  5     /// <param name="width">缩略图宽</param>  6     /// <param name="height">缩略图高</param>  7     /// <returns></returns>  8     public System.Drawing.Image GetHvtThumbnail(System.Drawing.Image image, int width, int height) 9     {10      //代码是从开源项目HoverTreeCMS中获取的11      //更多信息请参考:http://hovertree.com/menu/hovertreecms/12       Bitmap m_hovertreeBmp = new Bitmap(width, height);13       //从Bitmap创建一个System.Drawing.Graphics 14       Graphics m_HvtGr = Graphics.FromImage(m_hovertreeBmp);15       //设置 16       m_HvtGr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;17       //下面这个也设成高质量 18       m_HvtGr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;19       //下面这个设成High 20       m_HvtGr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;21       //把原始图像绘制成上面所设置宽高的缩小图 22       Rectangle rectDestination = new Rectangle(0, 0, width, height);23 24       int m_width, m_height;25       if (image.Width * height > image.Height * width)26       {27         m_height = image.Height;28         m_width = (image.Height * width) / height;29       }30       else31       {32         m_width = image.Width;33         m_height = (image.Width * height) / width;34       }35 36       m_HvtGr.DrawImage(image, rectDestination, 0, 0, m_width, m_height, GraphicsUnit.Pixel);37 38       return m_hovertreeBmp;39     }

 

 

需要引用命名空间:System.Drawing

转载自:http://hovertree.com/hvtart/bjae/9o2rqm6t.htm

ASP.NET开源CMS  http://www.cnblogs.com/sosoft/p/cms.html

开发技术文章收集 http://www.cnblogs.com/sosoft/p/kaifajishu.html