C#生成高清缩略图 （装在自OPEN经验库）

来源 http://www.open-open.com/lib/view/open1389943861320.html

代码如下实现图片的高清缩略图

/// <summary>

   /// 为图片生成缩略图

   /// </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 GetThumbnail(System.Drawing.Image image, int width, int height)

   {

       Bitmap bmp = new Bitmap(width, height);

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

       System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage(bmp);

       //设置

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

       //下面这个也设成高质量

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

       //下面这个设成High

       gr.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

       System.Drawing.Rectangle rectDestination = new System.Drawing.Rectangle(0, 0, width, height);

gr.DrawImage(image, rectDestination, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel);

       return bmp;

   }  

C#生成高清缩略图 （装在自OPEN经验库）