Convert BitmapSource to Bitmap

bitmap.cs

        private Bitmap GetBitmap(BitmapSource source)
        {
            Bitmap bmp = new Bitmap
            (
              source.PixelWidth,
              source.PixelHeight,
              System.Drawing.Imaging.PixelFormat.Format32bppPArgb
            );

            BitmapData data = bmp.LockBits
            (
                new System.Drawing.Rectangle(System.Drawing.Point.Empty, bmp.Size),
                ImageLockMode.WriteOnly,
                System.Drawing.Imaging.PixelFormat.Format32bppPArgb
            );

            source.CopyPixels
            (
              Int32Rect.Empty,
              data.Scan0,
              data.Height * data.Stride,
              data.Stride
            );

            bmp.UnlockBits(data);

            return bmp;
        }