条码打印源码

namespace FormExample
{
    public partial class Form2 : Form
    {
//Created by zhuhl on 2014-11-16
        private int nPrintIdTmp;
        private int LabelType;
        private string LabelFile = string.Empty;
        

        public Form2()
        {
            InitializeComponent();
        }

        private void btnPrint_Click(object sender, EventArgs e)
        {
            if (this.txtProlot.Text.Trim().Length > 15)
            {
                MessageBox.Show("批号长度不能超过15位","系统提示",MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
                return;
            }
            if (this.ChkProlot())
            {
                string strPath = Application.StartupPath.ToString();
                string str2 = "";
                str2 = strPath + @"\Label\FontLib.xml"; //设置字体
                // string barFontlist = ;
                PrintersAndPrintType type = new PrintersAndPrintType();
                if (type.ShowDialog() != DialogResult.Cancel) // 取消选打印机及语言，直接取默认，即EPLII 和 默认打印机

                {

                    string strSql = "PRODUCT_GETBARCODEDATA '" + this.nPrintIdTmp + "','" + this.LabelType + "'";
                    ITPrintClass class2 = new ITPrintClass();
                    // class2.ChineseFontName = "宋体";
                    // class2.BeginPrint(); // 直接发送到默认打印机
                    class2.BeginPrintAt(type.ITPrinterName); //指定打印机                

                    if (string.Compare(type.ITPrinterType, "ZPLII") == 0)
                    {
                        class2.PrinterType = tagITPrinterType.ZPLII;
                    }
                    if ((str2 != null) && (str2.Length > 0))
                    {
                        //获取定义标签的文件的内容
                        class2.LoadFontLibIndexFromText(this.GetDefineLabelXmlText(str2));
                    }
                    string strFile = strPath + @"\Label\" + LabelFile;//添加路径信息
                    class2.SetBarcodeDefineXmlText(this.GetDefineLabelXmlText(strFile)); //标贴定义档

                    if (strSql.Length > 0)
                    {
                        class2.PrintDefinedBarcodeLabel(this.GetSqlDataXmlText(strSql));//从数据库取的

                    }
                    else
                    {
                        class2.PrintDefinedBarcodeLabel(null);
                    }
                    class2.EndPrint();