获取扫描枪的数据---在线等

Question

普通的USB扫描枪，窗口上有一个文本框来获取扫描的内容，扫描枪扫描的数据类似于键盘输入一样，在文本框中一个一个字符出现，扫描一维条码的时候没有什么问题，但是在扫描2维条码的就出现问题，2维条码的内容太多，textbox显示都需要5秒钟左右，扫描过程是连续扫描，要是中间错了一个，会导致后面的都存不进系统，需要重新扫描，并且还要寻找从那一个开始时错误的。1.有没有办法能够快速的获取扫描枪的内容并且显示在textbox上？
2.能否直接从USB口读取数据？

Answer 1

1、需要一个usb到串口的转换 。
我的独家代码
  public partial class CutMeatRecordInfo : Form
    {
        BarcodeLib.Barcode b = new BarcodeLib.Barcode();
        private PrintTest.net.greeniot.www.GrwlImplService ws = new PrintTest.net.greeniot.www.GrwlImplService();
        public CutMeatRecordInfo()
        {
            InitializeComponent();        }        private void tb_view_Click(object sender, EventArgs e)
        {
            //Barcode barcode1 = new Barcode();
            //DotNetBarcode barcode = new DotNetBarcode();
            //Bitmap bitmap = new Bitmap(600, 340);
            //Graphics gs = Graphics.FromImage(bitmap);
            //gs.Clear(Color.White);
            //gs.DrawString(this.txtTimes.Text.Trim(), new Font("黑体", 8), new SolidBrush(Color.Black), new Rectangle(255, 80, 130, 50));
            //barcode.Type = DotNetBarcode.Types.QRCode;
            //barcode.WriteBar(this.tb_number.Text.Trim(), 230, 120, 110, 110, gs);
            //System.Drawing.Image image = barcode1.Encode(TYPE.CODE128, this.tb_number.Text.Trim(), Color.Black, Color.White, 190, 50);
            //gs.DrawImage(image, new Rectangle(0, 140, 230, 50));
            //gs.DrawString(this.tb_number.Text.Trim(), new Font("宋体", 8), new SolidBrush(Color.Black), new Rectangle(40, 180, 190, 20));
            //pictureBox4.Image = bitmap;
        }
        /// <summary>
        /// 确认按钮
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnYes_Click(object sender, EventArgs e)
        {
            Barcode barcode1 = new Barcode();
            DotNetBarcode barcode = new DotNetBarcode();
            Bitmap bitmap = new Bitmap(140, 140);//保存二维条码形状
            Bitmap bitmap2 = new Bitmap(170, 21);//保存条码号
            Graphics gs = Graphics.FromImage(bitmap);
            gs.Clear(Color.White);            Graphics gs1 = Graphics.FromImage(bitmap2);
            gs1.Clear(Color.White);
            barcode.Type = DotNetBarcode.Types.QRCode;
            //生成二维条码
            //barcode.WriteBar("标签编号:'" + tb_number.Text + "'" + "分割部位：" + "'" + cmbPosition.Text + "'" + "分割肉重量:" + "'" + txtWeight.Text + "'", 1, 1, 60, 60, gs);
            barcode.WriteBar("全程溯源 国内首创" + "\r\n " + " 产品介绍：" + "\r\n " + "http:// www " + "\r\n " + " 有限公司  荣誉出品", 1, 1, 140, 140, gs);
            gs1.DrawString(tb_number.Text.Trim(), new Font("宋体", 8), new SolidBrush(Color.Black), new Rectangle(0, 0, 209, 33));
            pictureBox3.Image = bitmap;
        }
        private void ClearCotrol()
        {
            txtTabNo.Text = "";
            cmbPosition.SelectedIndex = -1;
            txtWeight.Text = "";
            txtWeight.Text = "";
        }
        /// <summary>
        /// 返回按钮
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnCanncel_Click(object sender, EventArgs e)
        {
            this.Close();
            MainFrame mf = new MainFrame();
            mf.Show();
        }
     

Answer 2

   /// <summary>
        /// 下一笔
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnNext_Click(object sender, EventArgs e)
        {        }        private void CutMeatRecordInfo_Load(object sender, EventArgs e)
        {
            pictureBox5.Visible = false;
            cbEncodeType.Text = "Code 128";
            string color = "";
            try
            {
                ManageTxtFile mt = new ManageTxtFile();
                string strPath = mt.GetAppPath();
                string strData = mt.ReadTxtFile(strPath, "Login.txt");
                string[] info = Regex.Split(strData, @"\|\|");//正则获取数据
                color = ws.getLabelColorAndShape(info[1]);
                txtTimes.Text = ws.getBarCodeBatches();
            }
            catch (System.Exception ex)
            {
                MessageBox.Show("网络服务连接失败，请检查链接后重新登录！", "系统信息");
                return;
            }            string[] strInfo = Regex.Split(color, @"\|");//正则获取数据
            string everyone = "";//保存每一组
            string[] strEveryOne;//将每一组再分组
            string flag = "";//每一组分组后再分组的每一个的标示位
            string value = "";//每一组分组后再分组的每一个的值
            string num = "";//每一组分组后再分组的每一个的符号            DataTable dt = new DataTable();
            dt.Columns.Add(new DataColumn("形状", typeof(string)));
            dt.Columns.Add(new DataColumn("形状编号", typeof(string)));
            DataTable dt1 = new DataTable();
            dt1.Columns.Add(new DataColumn("颜色", typeof(string)));
            dt1.Columns.Add(new DataColumn("颜色编号", typeof(string)));            for (int i = 0; i < strInfo.Length - 1; i++)
            {
                DataRow dr = dt.NewRow();
                DataRow dr1 = dt1.NewRow();
                everyone = strInfo[i];
                strEveryOne = Regex.Split(everyone, ":");//正则获取数据
                flag = strEveryOne[2];
                //if (flag == "0")
                //{
                //    dr["形状"] = strEveryOne[0];
                //    dr["形状编号"] = strEveryOne[1];
                //    dt.Rows.Add(dr);
                //}
                //if (flag == "1")
                //{
                //    dr1["颜色"] = strEveryOne[0];
                //    dr1["颜色编号"] = strEveryOne[1];
                //    dt1.Rows.Add(dr1);
                //}
            }            //this.cmbShape.DataSource = dt;
            //this.cmbShape.DisplayMember = "形状";
            //this.cmbShape.ValueMember = "形状编号";            //this.cmbColor.DataSource = dt1;
            //this.cmbColor.DisplayMember = "颜色";
            //this.cmbColor.ValueMember = "颜色编号";
            //cmbColor.SelectedIndex = -1;
            //cmbShape.SelectedIndex = -1;
            //获取分割部位数据
            string position = "";
            try
            {
                ManageTxtFile mt = new ManageTxtFile();
                string strPath = mt.GetAppPath();
                string strData = mt.ReadTxtFile(strPath, "Login.txt");
                string[] strInfomation = Regex.Split(strData, @"\|\|");//正则获取数据
                position = ws.getSplitPositionDic(strInfomation[1]);
            }
            catch (System.Exception ex)
            {
                MessageBox.Show("网络服务连接失败，请检查链接后重新登录！", "系统信息");
                return;
            }
            string[] cutPosition = Regex.Split(position, @"\|");//正则获取数据
            string po = "";//保存每一组中每一项
            string[] posi;//保存每一组中每一项再按正则分成一组
            DataTable dtPosion = new DataTable();
            dtPosion.Columns.Add(new DataColumn("部位", typeof(string)));
            dtPosion.Columns.Add(new DataColumn("部位编号", typeof(string)));
            for (int j = 0; j < cutPosition.Length - 1; j++)
            {
                po = cutPosition[j];
                posi = Regex.Split(po, ":");//正则获取数据
                DataRow drPosion = dtPosion.NewRow();
                drPosion["部位"] = posi[0];
                drPosion["部位编号"] = posi[1];
                dtPosion.Rows.Add(drPosion);
            }
            this.cmbPosition.DataSource = dtPosion;
            this.cmbPosition.DisplayMember = "部位";
            this.cmbPosition.ValueMember = "部位编号";
            cmbPosition.SelectedIndex = -1;
        }        private void txtWeight_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (!(((e.KeyChar >= '0') && (e.KeyChar <= '9')) || e.KeyChar <= 31))
            {
                if (e.KeyChar == '.')
                {
                    if (((TextBox)sender).Text.Trim().IndexOf('.') > -1)
                        e.Handled = true;
                }
                else
                    e.Handled = true;
            }
            else
            {
                if (e.KeyChar <= 31)
                {
                    e.Handled = false;
                }
                else if (((TextBox)sender).Text.Trim().IndexOf('.') > -1)
                {
                    if (((TextBox)sender).Text.Trim().Substring(((TextBox)sender).Text.Trim().IndexOf('.') + 1).Length >= 4)
                        e.Handled = true;
                }
            }
        }        private void tb_print_Click(object sender, EventArgs e)
        {
            printDocument1.Print();
        }        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            ////e.Graphics.DrawImage(picLable.Image, 60, 140);//商标picLable 宽度，高度。
            //e.Graphics.DrawImage(piclable2.Image, 18, 147);//产品追溯码
            //e.Graphics.DrawImage(pictureBox3.Image, 130, 140);//二维码
            //e.Graphics.DrawImage(pictureBox4.Image, 17, 200);//一维码
            ////e.Graphics.DrawImage(picNetAddr.Image, 15, 215);//网址
            ////e.Graphics.DrawImage(pictureBox6.Image, 15, 226);//网址
            //e.Graphics.DrawImage(pictureBox5.Image, 15, 1);//产品追溯码
            e.Graphics.DrawImage(pictureBox3.Image, 57, -10);//二维码
            //e.Graphics.DrawImage(pictureBox4.Image, 15, 60);//一维码
        }        private void btnForeColor_Click(object sender, EventArgs e)
        {
            using (ColorDialog cdialog = new ColorDialog())
            {
                cdialog.AnyColor = true;
                if (cdialog.ShowDialog() == DialogResult.OK)
                {
                    this.b.ForeColor = cdialog.Color;
                    this.btnForeColor.BackColor = this.b.ForeColor;
                }//if
            }//using
        }        private void btnBackColor_Click(object sender, EventArgs e)
        {
            using (ColorDialog cdialog = new ColorDialog())
            {
                cdialog.AnyColor = true;
                if (cdialog.ShowDialog() == DialogResult.OK)
                {
                    this.b.BackColor = cdialog.Color;
                    this.btnBackColor.BackColor = this.b.BackColor;
                }//if
            }//using
        }
        //获取新批次
        private void btnNewTimes_Click(object sender, EventArgs e)
        {
            try
            {
                txtTimes.Text = ws.getBarCodeNewBatches();
            }
            catch (System.Exception ex)
            {
                MessageBox.Show("网络服务连接有问题！", "系统提示！");
                return;
            }        }
    }

Answer 3

DotNetBarcode类，代码太多，留下邮箱。4000多行

Answer 4

http://topic.csdn.net/u/20110224/14/a8010531-0432-48fa-a48c-967c5bcf6af0.html

Answer 5

http://www.codeproject.com/Articles/20823/Barcode-Image-Generation-Library

Answer 6

[email protected] or [email protected]
谢谢 ！