最近看到满大街的二维码扫码有惊喜，对二维码也有过一些了解，想看看到底是什么原理，在网上找了一些资料，自己弄了一个实例，采用的是MVC,贴出来分享一下

一维码生成

Controller

        public ActionResult QRCodView()
        {
            return View();
        }

1   <div class="col-md-4">
2         <h2>一维码生成</h2>
3         <div><input type="number" maxlength="24" placeholder="请输入24位数字" id="text1" class="form-control" /><i id="btnGO1" class="button btn-primary h6">生成一维码</i></div>
4         <img id="BarCod" src="~/Image/e78b58d4-c4d4-4561-a1a0-854170419f73.jpg" class="img-thumbnail" />
5     </div>

View

1    $("#btnGO1").click(function () {
2         $.post("/Data/Create", { context: $("#text1").val() }, function (d) {
3             $("#BarCod").attr("src", d);
4         });
5     });

JS代码

   //一维码生成
        public string Create()
        {
            string context = Request.Form["context"];
            string imgPath = CommCor.BarCodeUnit.CreateBarCode(context, Server.MapPath("~/TempFiled/"));

            return "/TempFiled/" + imgPath;
        }

//引用命名空间
using ZXing;
using System.Drawing;
using ZXing.QrCode;
using ZXing.Common;
using System.Text.RegularExpressions;
using System.Drawing.Imaging;
using ZXing.QrCode.Internal;
using System.IO;

        /// <summary>
        /// 一维码生成
        /// </summary>
        /// <param name="contents"></param>
        public static string CreateBarCode(string contents, string tempPath)
        {

            EncodingOptions options = null;
            BarcodeWriter writer = null;
            options = new EncodingOptions
            {
                Width = 200,
                Height = 200
            };
            writer = new BarcodeWriter();
            writer.Format = BarcodeFormat.ITF;
            writer.Options = options;
            Bitmap bitmap = writer.Write(contents);
            string fileName = Guid.NewGuid().ToString() + ".png";
            bitmap.Save(tempPath + fileName);
            return fileName;

        }

一维码生成核心代码

效果如上图