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  • 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;  
       }  
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  • 原文地址:https://www.cnblogs.com/qishiguilai/p/3743992.html
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