第三方库：

　　WPFMediaKit.dll ()

　　zing.dll

 

NuGet安装这两个第三方dll

 

 

 

项目截图预览：

 

 项目代码：

using System;using System.Collections.Generic;using System.Drawing;using System.IO;using System.Linq;using System.Runtime.InteropServices;using System.Text;using System.Threading.Tasks;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;using System.Windows.Threading;using WPFMediaKit.DirectShow.Controls;using ZXing;using ZXing.Common;using ZXing.QrCode.Internal;namespace QRcode{    /// 
    /// MainWindow.xaml 的交互逻辑    /// 
    public partial class MainWindow : Window    {        /// 
        /// ZXING 二维码扫描类        /// 
        BarcodeReader codeReader = new BarcodeReader();        /// 
        /// 定时器        /// 
        DispatcherTimer cameraTimer = new DispatcherTimer();        public MainWindow()        {            InitializeComponent();            // 配置的摄像头名称            var camera = "Lenovo EasyCamera";            if (MultimediaUtil.VideoInputNames.Contains(camera))            {                //控件制定摄像头                vce.VideoCaptureSource = camera;                cameraTimer.IsEnabled = false;                cameraTimer.Interval = new TimeSpan(200); //执行间隔0.2秒                cameraTimer.Tick += cameraTimer_Tick;            }        }        /// 
        /// 计时器方法        /// 
        ///         ///         private void cameraTimer_Tick(object sender, EventArgs e)        {            RenderTargetBitmap bmp = new RenderTargetBitmap((int)vce.ActualWidth, (int)vce.ActualHeight, 96, 96, PixelFormats.Default);            vce.Measure(vce.RenderSize);            vce.Arrange(new Rect(vce.RenderSize));            bmp.Render(vce);            BitmapEncoder encoder = new JpegBitmapEncoder();            encoder.Frames.Add(BitmapFrame.Create(bmp));            using (MemoryStream ms = new MemoryStream())            {                encoder.Save(ms);                Bitmap btiMap = new Bitmap(ms);                var result = codeReader.Decode(btiMap);//解析条码                if (result != null)                {                    // 1:停止识别                    cameraTimer.Stop();                    vce.Play();                     MessageBox.Show($"识别内容为：{result}");                }            }        }        private void BtnShiBie_Click(object sender, RoutedEventArgs e)        {            cameraTimer.Start();        }        private void BtnShnegCeng_Click(object sender, RoutedEventArgs e)        {           var codimg= Create("hello world!!");            imgQR.Source = ChangeBitmapToImageSource(codimg);        }        /// 
        /// 创建二维码        /// 
        /// 二维码中保存的信息        /// 
             public static Bitmap Create(string msg)        {            MultiFormatWriter writer = new MultiFormatWriter();            Dictionary
     
       hint = new Dictionary
      
       ();            //设置二维码为utf-8编码            hint.Add(EncodeHintType.CHARACTER_SET, "utf-8");            //设置纠错等级， 高            hint.Add(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);            BitMatrix bm = writer.encode(msg, BarcodeFormat.QR_CODE, 200, 120, hint);            BarcodeWriter barcodeWriter = new BarcodeWriter();            Bitmap bitmap = barcodeWriter.Write(bm);            string codePath = Directory.GetCurrentDirectory() + "/code.jpg";            if (File.Exists(codePath))                File.Delete(codePath);            bitmap.Save(codePath);            return bitmap;        }        /// 
       
        /// 从bitmap转换成ImageSource        /// 
        /// 
               /// 
               public static ImageSource ChangeBitmapToImageSource(Bitmap bitmap)        {            IntPtr hBitmap = bitmap.GetHbitmap();            ImageSource wpfBitmap = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(                hBitmap,                IntPtr.Zero,                Int32Rect.Empty,                BitmapSizeOptions.FromEmptyOptions());            if (!DeleteObject(hBitmap))            {                throw new System.ComponentModel.Win32Exception();            }            return wpfBitmap;        }        [DllImport("gdi32.dll", SetLastError = true)]        private static extern bool DeleteObject(IntPtr hObject);    }}
      
     

　　

 项目源代码地址：