Resize image in C# with aspect ratio and crop central image so there are no gaps

Question

I'm trying to resize user uploaded images to a landscape dimensions e.g. 450w and 250h while maintaining aspect ratio, but to avoid resized images like portrait images having gaps on the side I would like to crop the centre of the image to fill the resized dimensions.

I have found plenty of code to resize images while maintaining aspect ratio but not what I am looking for above, I'm hoping someone can help.

Answer 1

You should pass needToFill = true:

public static System.Drawing.Image FixedSize(Image image, int Width, int Height, bool needToFill) {     #region calculations     int sourceWidth = image.Width;     int sourceHeight = image.Height;     int sourceX = 0;     int sourceY = 0;     double destX = 0;     double destY = 0;      double nScale = 0;     double nScaleW = 0;     double nScaleH = 0;      nScaleW = ((double)Width / (double)sourceWidth);     nScaleH = ((double)Height / (double)sourceHeight);     if (!needToFill)     {         nScale = Math.Min(nScaleH, nScaleW);     }     else     {         nScale = Math.Max(nScaleH, nScaleW);         destY = (Height - sourceHeight * nScale) / 2;         destX = (Width - sourceWidth * nScale) / 2;     }      if (nScale > 1)         nScale = 1;      int destWidth = (int)Math.Round(sourceWidth * nScale);     int destHeight = (int)Math.Round(sourceHeight * nScale);     #endregion      System.Drawing.Bitmap bmPhoto = null;     try     {         bmPhoto = new System.Drawing.Bitmap(destWidth + (int)Math.Round(2 * destX), destHeight + (int)Math.Round(2 * destY));     }     catch (Exception ex)     {         throw new ApplicationException(string.Format("destWidth:{0}, destX:{1}, destHeight:{2}, desxtY:{3}, Width:{4}, Height:{5}",             destWidth, destX, destHeight, destY, Width, Height), ex);     }     using (System.Drawing.Graphics grPhoto = System.Drawing.Graphics.FromImage(bmPhoto))     {         grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic;         grPhoto.CompositingQuality = CompositingQuality.HighQuality;         grPhoto.SmoothingMode = SmoothingMode.HighQuality;          Rectangle to =  new System.Drawing.Rectangle((int)Math.Round(destX), (int)Math.Round(destY), destWidth, destHeight);         Rectangle from = new System.Drawing.Rectangle(sourceX, sourceY, sourceWidth, sourceHeight);         //Console.WriteLine("From: " + from.ToString());         //Console.WriteLine("To: " + to.ToString());         grPhoto.DrawImage(image, to, from, System.Drawing.GraphicsUnit.Pixel);          return bmPhoto;     } }