Image Management Code (Cropping And Resizing) In C#

ResizeImage.cs

public static Image ResizeImage(Image imgToResize, Size destinationSize)
        {
            var originalWidth = imgToResize.Width;
            var originalHeight = imgToResize.Height;

            //how many units are there to make the original length
            var hRatio = (float)originalHeight/destinationSize.Height;
            var wRatio = (float)originalWidth/destinationSize.Width;

            //get the shorter side
            var ratio = Math.Min(hRatio, wRatio);

            var hScale = Convert.ToInt32(destinationSize.Height * ratio);
            var wScale = Convert.ToInt32(destinationSize.Width * ratio);

            //start cropping from the center
            var startX = (originalWidth - wScale)/2;
            var startY = (originalHeight - hScale)/2;

            //crop the image from the specified location and size
            var sourceRectangle = new Rectangle(startX, startY, wScale, hScale);

            //the future size of the image
            var bitmap = new Bitmap(destinationSize.Width, destinationSize.Height);

            //fill-in the whole bitmap
            var destinationRectangle = new Rectangle(0, 0, bitmap.Width, bitmap.Height);

            //generate the new image
            using (var g = Graphics.FromImage(bitmap))
            {
                g.InterpolationMode = InterpolationMode.HighQualityBicubic;
                g.DrawImage(imgToResize, destinationRectangle, sourceRectangle, GraphicsUnit.Pixel);
            }

            return bitmap;

        }

// var thumbImage = ImageHelper.ResizeImage(image, new Size(45, 45));
// thumbImage.Save(thumbFullPath);

SaveCroppedImage.cs

bool SaveCroppedImage(Image image, int targetWidth, int targetHeight, string filePath)
{
    ImageCodecInfo jpgInfo = ImageCodecInfo.GetImageEncoders().Where(codecInfo => codecInfo.MimeType == "image/jpeg").First();
    Image finalImage = image;
    System.Drawing.Bitmap bitmap = null;
    try
    {
        int left = 0;
        int top = 0;
        int srcWidth = targetWidth;
        int srcHeight = targetHeight;
        bitmap = new System.Drawing.Bitmap(targetWidth, targetHeight);
        double croppedHeightToWidth = (double)targetHeight / targetWidth;
        double croppedWidthToHeight = (double)targetWidth / targetHeight;

        if (image.Width > image.Height)
        {
            srcWidth = (int)(Math.Round(image.Height * croppedWidthToHeight));
            if (srcWidth < image.Width)
            {
                srcHeight = image.Height;
                left = (image.Width - srcWidth) / 2;
            }
            else
            {
                srcHeight = (int)Math.Round(image.Height * ((double)image.Width / srcWidth));
                srcWidth = image.Width;
                top = (image.Height - srcHeight) / 2;
            }
        }
        else
        {
            srcHeight = (int)(Math.Round(image.Width * croppedHeightToWidth));
            if (srcHeight < image.Height)
            {
                srcWidth = image.Width;
                top = (image.Height - srcHeight) / 2;
            }
            else
            {
                srcWidth = (int)Math.Round(image.Width * ((double)image.Height / srcHeight));
                srcHeight = image.Height;
                left = (image.Width - srcWidth) / 2;
            }
        }
        using (Graphics g = Graphics.FromImage(bitmap))
        {
            g.SmoothingMode = SmoothingMode.HighQuality;
            g.PixelOffsetMode = PixelOffsetMode.HighQuality;
            g.CompositingQuality = CompositingQuality.HighQuality;
            g.InterpolationMode = InterpolationMode.HighQualityBicubic;
            g.DrawImage(image, new Rectangle(0, 0, bitmap.Width, bitmap.Height), new Rectangle(left, top, srcWidth, srcHeight), GraphicsUnit.Pixel);
        }
        finalImage = bitmap;
    }
    catch { }
    try
    {
        using (EncoderParameters encParams = new EncoderParameters(1))
        {
            encParams.Param[0] = new EncoderParameter(Encoder.Quality, (long)100);
            //quality should be in the range [0..100] .. 100 for max, 0 for min (0 best compression)
            finalImage.Save(filePath, jpgInfo, encParams);
            return true;
        }
    }
    catch { }
    if (bitmap != null)
    {
        bitmap.Dispose();
    }
    return false;
}

SimpleScale.cs

int originalHeight;
int originalWidth;
int imageHeight;
int imageWidth;
int requiredHeight;
int requiredWidth;
double scale;

if(originalHeight > requiredHeight)
{
    scale = requiredHeight / originalHeight;
    imageHeight = requiredHeight;
    imageWidth = originalHeight * scale;
}

if(imageWidth > requiredWidth)
{
    scale = requiredWidth / imageWidth;
    imageWidth = requiredWidth;
    imageHeight = imageHeight * scale;
}