Best Extension Methods: Resize Image

If your site has more work on displaying product images then this extension method will best suit for you application. This extension method is able to resize the image.

 public static Image ResizeAndFit(this Image image, Size newSize)
    {
        var sourceIsLandscape = image.Width > image.Height;
        var targetIsLandscape = newSize.Width > newSize.Height;

        var ratioWidth = (double)newSize.Width / (double)image.Width;
        var ratioHeight = (double)newSize.Height / (double)image.Height;

        var ratio = 0.0;

        if (ratioWidth > ratioHeight && sourceIsLandscape == targetIsLandscape)
            ratio = ratioWidth;
        else
            ratio = ratioHeight;

        int targetWidth = (int)(image.Width * ratio);
        int targetHeight = (int)(image.Height * ratio);

        var bitmap = new Bitmap(newSize.Width, newSize.Height);
        var graphics = Graphics.FromImage((Image)bitmap);

        graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;

        var offsetX = ((double)(newSize.Width - targetWidth)) / 2;
        var offsetY = ((double)(newSize.Height - targetHeight)) / 2;

        graphics.DrawImage(image, (int)offsetX, (int)offsetY, targetWidth, targetHeight);
        graphics.Dispose();

        return (Image)bitmap;
    }

Compiled By: Rajesh Rolen

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