C#单的二维码生成(中间带logo)

C#单的二维码生成

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using System.Drawing.Imaging;
using ZXing;
using System.IO;

namespace LotteryCustomerService.Common
{
    public class QRCodeHelper
    {
        /// <summary>
        /// 生成二维码
        /// </summary>
        /// <param name="msg">信息</param>
        /// <param name="px">长、宽长度</param>
        /// <returns>Img</returns>
        public static Bitmap GetQRCodeImg(string msg, int px = 250)
        {
            BarcodeWriter writer = new BarcodeWriter();
            writer.Format = BarcodeFormat.QR_CODE;
            writer.Options.Hints.Add(EncodeHintType.CHARACTER_SET, "UTF-8");//编码问题
            writer.Options.Hints.Add(
                EncodeHintType.ERROR_CORRECTION,
                ZXing.QrCode.Internal.ErrorCorrectionLevel.L //容错率，越高像素越大，图片越密
            );
            int codeSizeInPixels = px;   //设置图片长宽
            writer.Options.Height = writer.Options.Width = codeSizeInPixels;
            writer.Options.Margin = 0;//设置边框
            ZXing.Common.BitMatrix bm = writer.Encode(msg);
            Bitmap img = writer.Write(bm);
            return img;
        }

        /// <summary>
        /// 生成二维码
        /// </summary>
        /// <param name="msg">信息</param>
        /// <param name="px">长、宽长度</param>
        /// <returns>二进制流</returns>
        public static Stream GetQRCodeStream(string msg, int px)
        {
            Bitmap img = GetQRCodeImg(msg, px);
            using (MemoryStream ms = new MemoryStream())
            {
                img.Save(ms, ImageFormat.Jpeg);
                return ms;
            }
        }

        public static byte[] GetQRCodeArray(string msg, int px)
        {
            Bitmap img = GetQRCodeImg(msg, px);
            using (MemoryStream ms = new MemoryStream())
            {
                img.Save(ms, ImageFormat.Jpeg);
                byte[] data = new byte[ms.Length];
                data = ms.ToArray();
                return data;
            }
        }
    }
}