[C#] 이미지 파일을 비율에 맞게 Resize하여 저장

public static bool ResizeImageFile(string imageFilePath, in int newWidth, in int newHeight, in bool keepSizeRatio = true)
{
    try
    {
        byte[] byteArr = File.ReadAllBytes(imageFilePath);
 
        using (var stream = new System.IO.MemoryStream(byteArr))
        {
            Bitmap bitmap = new Bitmap(stream);
 
            int applyWidth = newWidth;
            int applyHeight = newHeight;
 
            if (keepSizeRatio)
            {
                double percentW = 0;
                double percentH = 0;
                double targetPercent = 0;
 
                percentW = (double)newWidth / bitmap.Width;
                percentH = (double)newHeight / bitmap.Height;
 
                if (percentW < percentH) targetPercent = percentW;
                else targetPercent = percentH;
 
                applyWidth = (int)(bitmap.Width * targetPercent);
                applyHeight = (int)(bitmap.Height * targetPercent);
 
                if (applyWidth > newWidth) applyWidth = newWidth;
                if (applyHeight > newHeight) applyHeight = newHeight;
            }
 
            bitmap = ResizeImage(bitmap, applyWidth, applyHeight);
            bitmap.Save(imageFilePath);
            bitmap.Dispose();
        }
 
        return true;
    }
    catch (Exception e)
    {
        Console.WriteLine(e);
        return false;
    }
}
 
public static Bitmap ResizeImage(Image image, int width, int height)
{
    var destRect = new Rectangle(0, 0, width, height);
    var destImage = new Bitmap(width, height);
 
    destImage.SetResolution(image.HorizontalResolution, image.VerticalResolution);
 
    using (var graphics = Graphics.FromImage(destImage))
    {
        graphics.CompositingMode = CompositingMode.SourceCopy;
        graphics.CompositingQuality = CompositingQuality.HighQuality;
        graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
        graphics.SmoothingMode = SmoothingMode.HighQuality;
        graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
 
        using (var wrapMode = new ImageAttributes())
        {
            wrapMode.SetWrapMode(WrapMode.TileFlipXY);
            graphics.DrawImage(image, destRect, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, wrapMode);
        }
    }
 
    return destImage;
}