1.先下载NuGet包(ZXing.Net)
2.新建控制器及编写后台代码
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using ZXing;
using ZXing.QrCode;
namespace WebApplication1.Controllers
{
public cl
