QR code asp net core

Creating QR Code in asp.net core is important part of application development nowadays, so we can easily scan QR Code and get information about product or pay a payement etc.
ZXing.NET is used to generate QR Code in ASP.NET Core
Here is sample code

 var writer = new QRCodeWriter();
            //generate QR Code
            var resultBit = writer.encode(formCollection["QrCodeString"], BarcodeFormat.QR_CODE, 200, 200);
            //get Bitmatrix result
            var matrix = resultBit;

            //convert bitmatrix into image
            int scale = 2;

            Bitmap result = new Bitmap(matrix.Width * scale, matrix.Height * scale);
            for (int x = 0; x < matrix.Height; x++)
                for (int y = 0; y < matrix.Width; y++)
                {
                    Color pixel = matrix[x, y] ? Color.Black : Color.White;
                    for (int i = 0; i < scale; i++)
                        for (int j = 0; j < scale; j++)
                            result.SetPixel(x * scale + i, y * scale + j, pixel);
                }

Thanks.