我试图使用这里提供的说明在我的WPF应用程序中添加QR码生成器：https://www.kailashsblogs.com/2020/05/generate-qr-code-in-wpf.html?m=0&fbclid=IwAR0CMMRGwE1eH-ASW4jVzML1oyEszLeSWAosK2QfuwOKCot_665O2aR1tEA
我安装了中兴。但是在将代码复制到我的MainWindow.xaml.cs后，我得到了错误“使用泛型类型'barcodereader'需要1个类型参数”

private void BtnConvert_Click(object sender, RoutedEventArgs e)
    {
        try
        {
            System.Drawing.Image img = null;
            BitmapImage bimg = new BitmapImage();
            using (var ms = new MemoryStream())
            {
                BarcodeWriter writer; <- HERE
                writer = new ZXing.BarcodeWriter() { Format = BarcodeFormat.QR_CODE }; <-HERE
                writer.Options.Height = 80;
                writer.Options.Width = 280;
                writer.Options.PureBarcode = true;
                img = writer.Write(this.txtbarcodecontent.Text);
                img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
                ms.Position = 0;
                bimg.BeginInit();
                bimg.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
                bimg.CacheOption = BitmapCacheOption.OnLoad;
                bimg.UriSource = null;
                bimg.StreamSource = ms;
                bimg.EndInit();
                this.imgbarcode.Source = bimg;// return File(ms.ToArray(), "image/jpeg");  
                this.tbkbarcodecontent.Text = this.txtbarcodecontent.Text;
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Imaging;
using System.IO;
using ZXing;
using System.Drawing;

我该怎么修理它？