New Post: Increase DPI from 72 to 300 does not work

            using (MagickImage resize = new MagickImage(folder + filename))
            {
                Single DPIChangeRatio = Convert.ToSingle(density) / Convert.ToSingle(res.X);
                resize.VirtualPixelMethod = VirtualPixelMethod.Transparent;
                resize.Resize(Convert.ToInt32(Convert.ToSingle(resize.Width) * DPIChangeRatio), Convert.ToInt32(Convert.ToSingle(resize.Height) * DPIChangeRatio));
                resize.Resample(density, density);
                resize.Density = new Density(density, density, DensityUnit.PixelsPerInch);

                filename = Guid.NewGuid().ToString() + System.IO.Path.GetExtension(filename);
                resize.Write(folder + filename);
            }