C# 编写简单二维码条形码工具

C# 二维码条形码工具

该工具简单实现了二维码条形码生成与识别功能，识别方式：通过摄像头实时识别或通过图片文件识别。
在这里插入图片描述
using AForge.Genetic;
using AForge.Video.DirectShow;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

using ZXing;
using ZXing.Common;
using ZXing.OneD;
using ZXing.QrCode;
using ZXing.QrCode.Internal;
using ZXing.Rendering;
using static System.Runtime.CompilerServices.RuntimeHelpers;

namespace BarCodeTools
{
    public partial class FormMain : Form
    {
        private Bitmap bitmap;
        private ImageFormat imgFormat = ImageFormat.Bmp; // 保存图片格式

        private string openPath = "";   // 识别图片路径
        //private string savePath = "";   // 图片保存路径
        private string logoPath = "";   // 二维码LOGO图片路径
        //private int cameraIndex = 0;    // 选择的摄像头Index

        private Color BackgroundColor = Color.White;
        private Color ForegroundColor = Color.Black;
  
        private FilterInfoCollection videoFilter;       // 摄像头设备集合
        private VideoCaptureDevice videoCaptureDevice;  // 捕获设备源

        public FormMain()
        {
            InitializeComponent();
        }

        private static Bitmap RemoveWhiteMargin(ZXing.Common.BitMatrix bitMatrix, Bitmap bitmap)
        {
            //获取参数
            int[] rec = bitMatrix.getEnclosingRectangle();
            int left = rec[0];
            int top = rec[1];
            int width = rec[2];
            int height = rec[3];
            Bitmap newImg = new Bitmap(width, height);
            Graphics g = Graphics.FromImage(newImg);
            //截取
            g.DrawImage(bitmap, 0, 0, new Rectangle(left, top, newImg.Width, newImg.Height), GraphicsUnit.Pixel);
            return newImg;
        }


        /// <summary>
        /// 生成条形码
        /// </summary>
        /// <returns></returns>
        private Bitmap GenerateBarCode()
        {             
            BarcodeWriter barCodeWriter = new BarcodeWriter();
            EAN8Writer eAN8Writer = new EAN8Writer();
            EAN13Writer eAN13Writer = new EAN13Writer();
            UPCAWriter upCAWriter = new UPCAWriter();
            UPCEWriter UPCEWriter = new UPCEWriter();

            EncodingOptions options = new EncodingOptions()
            {
                Width = Convert.ToInt32(numBarCodeWidth.Value),
                Height = Convert.ToInt32(numBarCodeHeigh.Value),
                Margin = Convert.ToInt32(numBarCodeMargin.Value),
            };
                               
            barCodeWriter.Options = options;
            
            string text = textBoxBarCodeText.Text.Trim();

            if (cmboxBarCodeFormat.Text == "CODE_128")
            {
                barCodeWriter.Format = BarcodeFormat.CODE_128;
            }
            else if (cmboxBarCodeFormat.Text == "CODE_39") {
                barCodeWriter.Format = BarcodeFormat.CODE_39;
            }
            else if (cmboxBarCodeFormat.Text == "CODE_93")
            {
                barCodeWriter.Format = BarcodeFormat.CODE_93;
            }            
            else if (cmboxBarCodeFormat.Text == "EAN_13")
            {
                // 输入信息必须是12位数字，不能有字母
                barCodeWriter.Format = BarcodeFormat.EAN_13;
            }
            else if (cmboxBarCodeFormat.Text == "EAN_8")
            {
                // 输入信息必须是7位数字，不能有字母
                barCodeWriter.Format = BarcodeFormat.EAN_8;
            }
            else if (cmboxBarCodeFormat.Text == "UPC_A")
            {
                // 输入信息必须是11位数字，不能有字母
                barCodeWriter.Format = BarcodeFormat.UPC_A;
            }
            else if (cmboxBarCodeFormat.Text == "UPC_E")
            {
                // 输入信息必须是7位数字，不能有字母，且第一位只能是0或1
                barCodeWriter.Format = BarcodeFormat.UPC_E;
            }

            Bitmap map = null;
            try { 
                map = barCodeWriter.Write(text);
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString(), "条形码生成错误");
                Console.WriteLine(e.ToString());
            }
            return map;
        }


        /// <summary>
        /// 生成二维码
        /// </summary>
        /// <returns></returns>
        private Bitmap GenerateQrCode()
        {
            BarcodeWriter barcodeWriter = new BarcodeWriter();
            barcodeWriter.Format = BarcodeFormat.QR_CODE;
            QrCodeEncodingOptions options = new QrCodeEncodingOptions();
            options.DisableECI = false;
            options.CharacterSet = "UTF-8";
            options.Width = Convert.ToInt32(numQrCodeWidth.Value);
            options.Height = Convert.ToInt32(numQrCodeHeight.Value);
            options.Margin = Convert.ToInt32(numQrCodeMargin.Value);          
            barcodeWriter.Options = options;

            barcodeWriter.Renderer = new BitmapRenderer
            {
                Background = BackgroundColor, //Color.White,
                Foreground = ForegroundColor  //Color.Black
            };

            Bitmap map = null;
            try
            {
                string text = richTextBoxQrCode.Text.Trim();
                map = barcodeWriter.Write(text);
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString(), "二维码生成错误", MessageBoxButtons.OK, MessageBoxIcon.Error);                
            }          

            return map;
        }


        private Bitmap GenerateQrCodeWithLogo()
        {
            Bitmap bmpimg = null; // 最终生成的二维码图片

            // 载入Logo图片
            Bitmap logo = new Bitmap(logoPath);

            // 构造二维码写码器
            MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
            Dictionary<EncodeHintType, object> hint = new Dictionary<EncodeHintType, object>();
            hint.Add(EncodeHintType.CHARACTER_SET, "UTF-8");
            hint.Add(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);

            // 生成二维码
            string text = richTextBoxQrCode.Text.Trim();
            Int32 width = Convert.ToInt32(numQrCodeWidth.Value);
            Int32 height = Convert.ToInt32(numQrCodeHeight.Value);
            BitMatrix bm = multiFormatWriter.encode(text, BarcodeFormat.QR_CODE, width, height, hint);
            BarcodeWriter barcodeWriter = new BarcodeWriter();            
            barcodeWriter.Renderer = new BitmapRenderer
            {
                Background = BackgroundColor, //Color.White,
                Foreground = ForegroundColor //Color.Black
            };
            Bitmap qrcode_map = barcodeWriter.Write(bm);


            // h获取二维码实际尺寸（去掉二维码两边空白后的尺寸）
            int[] rectangle = bm.getEnclosingRectangle();

            // 计算LOGO图片插入的大小位置信息
            int W = Math.Min((int)(rectangle[2] / 3.5), logo.Width);
            int H = Math.Min((int)(rectangle[3] / 3.5), logo.Height);
            int L = (qrcode_map.Width - W) / 2;
            int T = (qrcode_map.Height - H) / 2;

#if true
            // 将img转换成bmp格式，否则后面无法创建Graphics对象
            bmpimg = new Bitmap(qrcode_map.Width, qrcode_map.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            using (Graphics g = Graphics.FromImage(bmpimg))
            {
                g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
                g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
                g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
                g.DrawImage(qrcode_map, 0, 0);
            }

            // 将二维码插入到图片
            Graphics mGraphics = Graphics.FromImage(bmpimg);

            // 白底
            mGraphics.FillRectangle(Brushes.White, L, T, W, H);
            mGraphics.DrawImage(logo, L, T, W, H);
#endif
            return bmpimg;
        }

        private void FormMain_Load(object sender, EventArgs e)
        {
            timer1.Enabled = false;
            timer1.Interval = 200;  // 摄像头实时识别周期
        }

        //-----------------------------------生成条形码------------------------------------------------------

        private void btnBarCodeGenerate_Click(object sender, EventArgs e)
        {
            
            bitmap = GenerateBarCode();

            //bitmap.Save("");

            if (bitmap != null) { 
                pictureBoxBarCodePreView.Image = Image.FromHbitmap(bitmap.GetHbitmap());
            }

           //bitmap.Dispose();
        }

        private void btnBarCodeSave_Click(object sender, EventArgs e)
        {
            if (bitmap == null) {
                MessageBox.Show("请先生成条形码","图片保存失败");
                return;
            }

            try {
                //bitmap.Save(textBoxBarCodeSavePath.Text.Trim(), System.Drawing.Imaging.ImageFormat.Png);
                bitmap.Save(textBoxBarCodeSavePath.Text.Trim(), imgFormat);
                MessageBox.Show("图片保存成功");
            }
            catch (Exception ex)
            {
                MessageBox.Show("图片保存失败"+ex.ToString());
            }            
        }

        private void btnBarCodeSavePath_Click(object sender, EventArgs e)
        {
            SaveFileDialog saveFileDialog = new SaveFileDialog();
            saveFileDialog.Filter = "PNG Image|*.png|Bitmap Image|*.bmp";
            saveFileDialog.DefaultExt = "*.bmp";

            if (saveFileDialog.ShowDialog() == DialogResult.OK) { 
                string fName = saveFileDialog.FileName;
                textBoxBarCodeSavePath.Text = fName;

                switch (saveFileDialog.FilterIndex)
                {
                    case 0:
                        // SAVE PNG
                        imgFormat = ImageFormat.Png;
                        break;
                    case 1:
                        // SAVE BMP
                        imgFormat = ImageFormat.Bmp;
                        break;
                    default:
                        break;
                }
            }
        }

        private void cmboxBarCodeFormat_SelectedIndexChanged(object sender, EventArgs e)
        {

            if (cmboxBarCodeFormat.Text == "CODE_128")
            {
                richTextBox1.Text = "";
            }
            else if (cmboxBarCodeFormat.Text == "CODE_39")
            {
                richTextBox1.Text = "";
            }
            else if (cmboxBarCodeFormat.Text == "CODE_93")
            {
                richTextBox1.Text = "";
            }
            else if (cmboxBarCodeFormat.Text == "EAN_13")
            {
                // 输入信息必须是12位数字，不能有字母
                richTextBox1.Text = "输入信息必须是12位数字，不能有字母";
            }
            else if (cmboxBarCodeFormat.Text == "EAN_8")
            {
                // 输入信息必须是7位数字，不能有字母
                richTextBox1.Text = "输入信息必须是7位数字，不能有字母";
            }
            else if (cmboxBarCodeFormat.Text == "UPC_A")
            {
                // 输入信息必须是11位数字，不能有字母
                richTextBox1.Text = "输入信息必须是11位数字，不能有字母";
            }
            else if (cmboxBarCodeFormat.Text == "UPC_E")
            {
                // 输入信息必须是7位数字，不能有字母，且第一位只能是0或1
                richTextBox1.Text = "输入信息必须是7位数字，不能有字母，且第一位只能是0或1";

            }
        }

        //-----------------------------------生成二维码------------------------------------------------------

        /// <summary>
        ///  
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnQrCodeLogo_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog = new OpenFileDialog();
            openFileDialog.Filter = "PNG *.png|*.png|BMP *.bmp|*.bmp|JPG *.jpg|*.jpg|all files *.*|*.*";
            openFileDialog.DefaultExt = "*.png";

            if (openFileDialog.ShowDialog() == DialogResult.OK)
            { 
                logoPath = openFileDialog.FileName;

                Bitmap bmap = new Bitmap(logoPath);
                //picBoxQrCodeLogo.Image = bmap;
                picBoxQrCodeLogo.Image = Image.FromHbitmap(bmap.GetHbitmap());
            }
        }

        private void btnGenerateQrCode_Click(object sender, EventArgs e)
        {
            if (checkBokQrCodeWithLogo.Checked && logoPath != "")
            {
                bitmap = GenerateQrCodeWithLogo();
            }
            else 
            { 
                bitmap = GenerateQrCode();            
            }

            //bitmap.Save("");

            if (bitmap != null)
            {
                picBoxQrCodePreview.Image = Image.FromHbitmap(bitmap.GetHbitmap());
            }

        }

        private void btnSaveQrCode_Click(object sender, EventArgs e)
        {
            if (bitmap == null)
            {
                MessageBox.Show("请先生成二维码", "图片保存失败");
                return;
            }

            try
            {
                SaveFileDialog saveFileDialog = new SaveFileDialog();
                saveFileDialog.Filter = "PNG *.png|*.png|BMP *.bmp|*.bmp|JPG *.jpg|*.jpg|all files *.*|*.*";
                saveFileDialog.DefaultExt = "*.png";

                if (saveFileDialog.ShowDialog() == DialogResult.OK)
                {

                    imgFormat = ImageFormat.Bmp;

                    //bitmap.Save(textBoxBarCodeSavePath.Text.Trim(), System.Drawing.Imaging.ImageFormat.Png);
                    bitmap.Save(saveFileDialog.FileName, imgFormat);
                    MessageBox.Show("图片保存成功");
                }                
            }
            catch (Exception ex)
            {
                MessageBox.Show("图片保存失败"+ex.ToString());
            }
        }

        private void checkBokQrCodeWithLogo_CheckedChanged(object sender, EventArgs e)
        {
            if (checkBokQrCodeWithLogo.Checked)
            {

            }
            else
            {
                picBoxQrCodeLogo.Image = null;
                logoPath = "";
            }
            
        }

        // 二维码条形码识别

        protected Result BarCodeReaderReco(Bitmap map)
        {            
            BarcodeReader reader = new BarcodeReader();
            reader.Options.CharacterSet = "UTF-8";

            Result result = reader.Decode(map);

            if (result != null)
            {
                if (result.BarcodeFormat == BarcodeFormat.QR_CODE)
                {
                    textBoxCodeFormat.Text = "QR_CODE";
                }
                else if (result.BarcodeFormat == BarcodeFormat.CODE_128)
                {
                    textBoxCodeFormat.Text = "CODE_128";
                }
                else if (result.BarcodeFormat == BarcodeFormat.CODE_39)
                {
                    textBoxCodeFormat.Text = "CODE_39";
                }
                else if (result.BarcodeFormat == BarcodeFormat.CODE_93)
                {
                    textBoxCodeFormat.Text = "CODE_93";
                }
                else if (result.BarcodeFormat == BarcodeFormat.EAN_8)
                {
                    textBoxCodeFormat.Text = "EAN_8";
                }
                else if (result.BarcodeFormat == BarcodeFormat.EAN_13)
                {
                    textBoxCodeFormat.Text = "EAN_13";
                }
                else if (result.BarcodeFormat == BarcodeFormat.UPC_A)
                {
                    textBoxCodeFormat.Text = "UPC_A";
                }
                else if (result.BarcodeFormat == BarcodeFormat.UPC_E)
                {
                    textBoxCodeFormat.Text = "UPC_E";
                }
                else
                {
                    textBoxCodeFormat.Text = "未知编码类型";
                }

                richTextBoxReco.Text = result.Text;
            }
            else 
            {
                
            }

            return result;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog = new OpenFileDialog();

            openFileDialog.Filter = "图片文件 PNG *.png|*.png|BMP *.bmp|*.bmp|JPG *.jpg|*.jpg|all files *.*|*.*";
            openFileDialog.DefaultExt = "*.png";
            if (openFileDialog.ShowDialog() == DialogResult.OK) {
                openPath = openFileDialog.FileName;

                textBoxCodeFormat.Text = "";
                richTextBoxReco.Text = "";

                Bitmap bmap = new Bitmap(openPath);
                pictureBoxReco.Image = Image.FromHbitmap(bmap.GetHbitmap());
                Result ret = BarCodeReaderReco(bmap);                
            }           
        }

        private void button3_Click(object sender, EventArgs e)
        {
            videoFilter = new FilterInfoCollection(FilterCategory.VideoInputDevice);

            MessageBox.Show("识别到:" + videoFilter.Count.ToString() + "个摄像头");

            comboBoxVideos.Items.Clear();
            
            for (int i = 0; i < videoFilter.Count; i++)
            {
                comboBoxVideos.Items.Add(videoFilter[i].Name);
            }
            
            comboBoxVideos.SelectedIndex = 0;
        }

        private void CameraClose()
        {
            if (null != videoSourcePlayer1.VideoSource) { 
                videoSourcePlayer1.SignalToStop();
                videoSourcePlayer1.WaitForStop();
                videoSourcePlayer1.VideoSource = null;
            }

            timer1.Stop();
        }
        private void comboBoxVideos_SelectedIndexChanged(object sender, EventArgs e)
        {

#if false
            if (videoFilter.Count > comboBoxVideos.SelectedIndex)
            {
                cameraIndex = comboBoxVideos.SelectedIndex;
            }
            else
            {
                cameraIndex = 0;
                MessageBox.Show("选择的摄像头不存在，请刷新重新获取摄像头！");
                return;
            }
#else
            CameraClose();
            string CameraName = "";
            if (videoFilter.Count > comboBoxVideos.SelectedIndex)
            {
                CameraName = videoFilter[comboBoxVideos.SelectedIndex].MonikerString;
            }
            else {
                MessageBox.Show("选择的摄像头不存在，请刷新重新获取摄像头！");
                return;
            }

            videoCaptureDevice = new VideoCaptureDevice(CameraName);
            videoSourcePlayer1.VideoSource = videoCaptureDevice;
            videoSourcePlayer1.Start();

            timer1.Start();
#endif
        }

        private void button2_Click(object sender, EventArgs e)
        {
#if true
             CameraClose();
#else
            if (button2.Text == "打开摄像头")
            {
                CameraClose();
                string CameraName = "";
                if (videoFilter.Count > cameraIndex)
                {
                    CameraName = videoFilter[cameraIndex].MonikerString;
                }
                else
                {
                    MessageBox.Show("选择的摄像头不存在，请刷新重新获取摄像头！");
                    return;
                }

                videoCaptureDevice = new VideoCaptureDevice(CameraName);
                videoSourcePlayer1.VideoSource = videoCaptureDevice;
                videoSourcePlayer1.Start();
                  
                timer1.Start();
                button2.Text = "关闭摄像头";
            }
            else {
                CameraClose();
                button2.Text = "打开摄像头";
            }
#endif            
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (videoSourcePlayer1.VideoSource != null) {
                Bitmap bitmap = videoSourcePlayer1.GetCurrentVideoFrame();  // 获取图片
                //pictureBoxReco.Image = bitmap;


                if (bitmap != null) {
                    Result ret = BarCodeReaderReco(bitmap);                    
                }
               
            }
        }

        private void btnQrCodeBackground_Click(object sender, EventArgs e)
        {
            ColorDialog colorDialog = new ColorDialog();
            if (colorDialog.ShowDialog() == DialogResult.OK)
            {
                BackgroundColor = colorDialog.Color;
                labelQrCodeBackground.BackColor = BackgroundColor;
            }
        }

        private void btnQrCodeForeground_Click(object sender, EventArgs e)
        {
            ColorDialog colorDialog = new ColorDialog();
            if (colorDialog.ShowDialog() == DialogResult.OK)
            {
                ForegroundColor = colorDialog.Color;
                labelQrCodeForeground.BackColor = ForegroundColor;
            }
        }

        private void labelQrCodeBackground_Click(object sender, EventArgs e)
        {
            ColorDialog colorDialog = new ColorDialog();
            if (colorDialog.ShowDialog() == DialogResult.OK)
            {
                BackgroundColor = colorDialog.Color;
                labelQrCodeBackground.BackColor = BackgroundColor;
            }
        }

        private void labelQrCodeForeground_Click(object sender, EventArgs e)
        {
            ColorDialog colorDialog = new ColorDialog();
            if (colorDialog.ShowDialog() == DialogResult.OK)
            {
                ForegroundColor = colorDialog.Color;
                labelQrCodeForeground.BackColor = ForegroundColor;
            }
        }

        private void label6_Click(object sender, EventArgs e)
        {

        }

        private void FormMain_Leave(object sender, EventArgs e)
        {
           
        }

        private void FormMain_FormClosing(object sender, FormClosingEventArgs e)
        {
            Console.WriteLine(" App Closing to close camera.");
            CameraClose();
        }
    }
}