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   源码介绍

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Printing;


namespace PrintDemo
{
    public partial class Form1 : Form
    {

        private DocumentBase _document;
        public Form1()
        {
            InitializeComponent();
            loadBeiJing();
        }

        private void loadBeiJing()
        {
            try
            {
                _document = new ImageDocument(pictureImage.Image);
            }
            catch (Exception ex)
            {
                MessageBox.Show("the Contacts can not be loaded"   ex.ToString());
            }
        }

        private void buttonPreview_Click(object sender, EventArgs e)
        {
            if (_document == null)
            {
                MessageBox.Show("the Contacts can not be loaded");
                return;
            }

            PrintPreviewDialog dialog = new PrintPreviewDialog();
            dialog.Document = _document;

            dialog.ShowDialog();
        }

        private void buttonPageSettings_Click(object sender, EventArgs e)
        {
            if (_document == null)
            {
                MessageBox.Show("the Contacts can not be loaded");
                return;
            }

            _document.ShowPageSettingsDialog();
        }

        private void buttonPrint_Click(object sender, EventArgs e)
        {
            if (_document == null)
            {
                MessageBox.Show("the Contacts can not be loaded");
                return;
            }

            PrintDialog dialog = new PrintDialog();
            dialog.Document = _document;


            if (dialog.ShowDialog() == DialogResult.OK)
            {
                try
                {
                    _document.Print();
                }
                catch 
                {
                    MessageBox.Show("未成功打印，请检查打印机状态.......", "系统提示");
                }
            }
        }

        private void buttonPrintNow_Click(object sender, EventArgs e)
        {
            if (_document == null)
            {
                MessageBox.Show("the Contacts can not be loaded");
                return;
            }

            PrintDialog dialog = new PrintDialog();
            dialog.Document = _document;
            try
            {
                _document.Print();
            }
            catch 
            {
                MessageBox.Show("未成功打印，请检查打印机状态.......", "系统提示");
            }

        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                PrintDocument pd = new PrintDocument();

                pd.DefaultPageSettings.PaperSize = new PaperSize("mypage", 300, 260);

                pd.PrintPage  = new PrintPageEventHandler(PrintInOut);
                pd.Print();
            }
            catch
            {
                MessageBox.Show("打印失败！请检查打印机是否可用...........", "系统提示");
                return;
            } 
        }

        private void PrintInOut(object sender, PrintPageEventArgs ev)
        {
            Font printFont;
            string str;
            float yPos = 0;
            int count = 0;
            float leftMargin = 10;   //ev.MarginBounds.Left;   
            float topMargin = 0;   //ev.MarginBounds.Top;   

            printFont = new Font("黑体", 12);
            str = "   欢     迎     光     临";
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());

            count  ;     //加一空行   

            // printFont   =   new   Font("黑体",   12);   
            // str   =   uncString.FillLeftSpace(   this.labelShopName.Text,   20   -   this.labelShopName.Text.Length   );   
            // yPos   =   topMargin       ((count  )   *   printFont.GetHeight(ev.Graphics));   
            // ev.Graphics.DrawString   (str,   printFont,   Brushes.Black,   leftMargin,   yPos,   new   StringFormat());   

            printFont = new Font("新宋体", 10);
            str = "========================================";
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics))   5;
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());

            //打印流水号   
            str = "流水号：";
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());

            str = "----------------------------------------";
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());

            str = "  品名   单价   数量     折扣    金额";
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());

            str = "----------------------------------------";
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());
 
                str ="";   //打印品名   
                yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
                ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());
                //打印单价、数量、折扣、金额   
                str = "                 ";

                yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
                ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());


            str = "----------------------------------------";
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());

            str = "                     合计:                       ";
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());
            str = "                     收银:                       ";
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());

            
                str = "                     找零:                       " ;
                yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
                ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());

            count  ;     //加一空行   

            str = DateTime.Now.ToString("yyyy.MM.dd   HH:mm:ss");
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());

            //滚动6行   
            count  = 5;
            str = "   ";
            yPos = topMargin   ((count  ) * printFont.GetHeight(ev.Graphics));
            ev.Graphics.DrawString(str, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());

        }

        //private PrinterStatus GetPrinterStat(string PrinterDevice)
        //{
        //    PrinterStatus ret = 0;
        //    string path = @"win32_printer.DeviceId='"   PrinterDevice   "'";
        //    ManagementObject printer = new ManagementObject(path);
        //    printer.Get();
        //    ret = (PrinterStatus)Convert.ToInt32(printer.Properties["PrinterStatus"].Value);
        //    return ret;
        //}
    }
}