Code
            /// <summary>
            /// 将图像调整到指定尺寸
            /// </summary>
            /// <param name="图像">源图像</param>
            /// <param name="缩放尺寸">目标尺寸</param>
            /// <param name="插值算法">插值算法</param>
            /// <param name="平滑模式">平滑模式</param>
            /// <param name="合成质量">合成质量</param>
            /// <returns>调整后的图像</returns>
            public static Image 缩放图像(Image 图像, Size 缩放尺寸, InterpolationMode 插值算法, SmoothingMode 平滑模式, CompositingQuality 合成质量)
            {
                Bitmap resizedBmp = new Bitmap(缩放尺寸.Width, 缩放尺寸.Height);
                Graphics g = Graphics.FromImage(resizedBmp);
                g.InterpolationMode = 插值算法;
                g.SmoothingMode = 平滑模式;
                g.CompositingQuality = 合成质量;
                g.DrawImage(图像, new Rectangle(0, 0, 缩放尺寸.Width, 缩放尺寸.Height), new Rectangle(0, 0, 图像.Width, 图像.Height), GraphicsUnit.Pixel);
                return resizedBmp;
            }