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  • 简单的GDI+处理图片大小(C#代码)

            /// <summary>
            /// 缩放图片
            /// </summary>
            /// <param name="img">原图片</param>
            /// <param name="xWith">缩放宽比例,如果想缩小图片,小于100</param>
            /// <param name="yHeight">缩放高比例</param>
            /// <returns>返回处理后图片</returns>
            public Image scaleImg(System.Drawing.Image img, int xWith, int yHeight)
            {
                //计算处理后图片宽
                int i = Convert.ToInt32(img.Width * xWith / 100);
                //计算处理后图片高
                int j = Convert.ToInt32(img.Height * yHeight / 100);
                //格式化图片
                System.Drawing.Image imgScale = new System.Drawing.Bitmap(i, j, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
                System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(imgScale);
                System.Drawing.Rectangle srcRect = new System.Drawing.Rectangle(0, 0, img.Width, img.Height);
                System.Drawing.Rectangle desRect = new System.Drawing.Rectangle(0, 0, imgScale.Width, imgScale.Height);
                g.Clear(System.Drawing.Color.White);
                g.DrawImage(img, desRect, srcRect, System.Drawing.GraphicsUnit.Pixel);
                //处理后的图片另存
                imgScale.Save("E:\\1111.jpg", System.Drawing.Imaging.ImageFormat.Gif);
                g.Dispose();
                return imgScale;
            }
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  • 原文地址:https://www.cnblogs.com/cuihongyu3503319/p/656881.html
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