C# Fotoğraf boyutlandırma

public static Image ResizeImage (Image Img, Size NewSize)
{
    Image newImage = new Bitmap(NewSize.Width, NewSize.Height);

    using (Graphics GFX = Graphics.FromImage((Bitmap)newImage))
    {
        GFX.InterpolationMode = InterpolationMode.HighQualityBicubic;
        GFX.SmoothingMode = SmoothingMode.HighQuality;
        GFX.PixelOffsetMode = PixelOffsetMode.HighQuality;
        GFX.CompositingQuality = CompositingQuality.HighQuality;
        GFX.DrawImage(Img, new Rectangle(Point.Empty, NewSize));
    }

    return newImage;
}

OpenFileDialog OpenFileDlg = new OpenFileDialog();

if(OpenFileDlg.ShowDialog() == DialogResult.OK)
{
    try
    {
        Image Img = Bitmap.FromFile(OpenFileDlg.FileName);
        Img = ResizeImage(Img, New Size(80, 80));
        Img.Save("Kaydetilecek Lokasyon.png", System.Drawing.Imaging.ImageFormat.Png);
    }
    catch (Exception exp)
    {
        // Eğer ki Hata Verirse Yazdırmak İçin MessageBoxtan Veyahut Console.Writeline Kullanabilirsin (Örn: Console.WriteLine("Hata : " + exp))
    }
}

OpenFileDlg.Dispose();