E3.Utility/PrintService.cs

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

namespace E3.Utility
{
    public class Printservice
    {
        /// <summary>
        /// PrintService 的摘要说明。
        /// </summary>
        public Printservice()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
            this.docToPrint.PrintPage += new PrintPageEventHandler(docToPrint_PrintPage);
        }//将事件处理函数添加到PrintDocument的PrintPage中
        // Declare the PrintDocument object.
        private System.Drawing.Printing.PrintDocument docToPrint = new System.Drawing.Printing.PrintDocument();//创建一个PrintDocument的实例
        private System.IO.Stream streamToPrint;
        string streamType;
        // This method will set properties on the PrintDialog object and
        // then display the dialog.
        public void StartPrint(Stream streamToPrint, string streamType)
        {
            this.streamToPrint = streamToPrint;
            this.streamType = streamType;
            // Allow the user to choose the page range he or she would
            // like to print.
            System.Windows.Forms.PrintDialog PrintDialog1 = new PrintDialog();//创建一个PrintDialog的实例。
            PrintDialog1.AllowSomePages = true;
            // Show the help button.
            PrintDialog1.ShowHelp = true;
            // Set the Document property to the PrintDocument for 
            // which the PrintPage Event has been handled. To display the
            // dialog, either this property or the PrinterSettings property 
            // must be set 
            PrintDialog1.Document = docToPrint;//把PrintDialog的Document属性设为上面配置好的PrintDocument的实例
            DialogResult result = PrintDialog1.ShowDialog();//调用PrintDialog的ShowDialog函数显示打印对话框
            // If the result is OK then print the document.
            if (result == DialogResult.OK)
            {
                PageSettings pageSet = new PageSettings();
                //pageSet.Landscape = false; //打印方向为纵向
                pageSet.Margins.Top = 1; //设置顶部页边距  
                pageSet.Margins.Left = 1; //设置左部页边距

                docToPrint.DefaultPageSettings = pageSet;//当前打印页面为上面设置的打印页面

                docToPrint.Print();//开始打印
            }
        }
        // The PrintDialog will print the document
        // by handling the document's PrintPage event.
        private void docToPrint_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)//设置打印机开始打印的事件处理函数