using System;

 using System.Collections.Generic;

 using System.ComponentModel;

 using System.Data;

 using System.Drawing;

 using System.Drawing.Printing;

 using System.Linq;

 using System.Text;

 using System.Threading.Tasks;

 using System.Windows.Forms;

 namespace Print

 {

     public partial class Form1 : Form

     {

         public Form1()

         {

             InitializeComponent();

         }

         private int intCurrentRowIndex = ;

         public void InitPrintDocument(PrintDocument printDocument)

         {

             printDocument.DocumentName = "PrintDocument事例！";

             foreach (PaperSize ps in printDocument.PrinterSettings.PaperSizes)

             {

                 if (ps.PaperName == "A4")

                 {

                     printDocument.DefaultPageSettings.PaperSize = ps;

                     break;

                 }

             }

             printDocument.BeginPrint += printDocument_BeginPrint;

             printDocument.EndPrint += printDocument_EndPrint;

             printDocument.PrintPage += printDocument_PrintPage;

         }

         void printDocument_PrintPage(object sender, PrintPageEventArgs e)

         {

             int x = ;

             int y = ;

             for (int i = intCurrentRowIndex; i < this.textBox1.Lines.Length; i++)

             {

                 e.Graphics.DrawString(this.textBox1.Lines[i], this.textBox1.Font, Brushes.Black, x, y);

                 intCurrentRowIndex++;

                 y = this.textBox1.Font.Height + ;

                 if (y > e.PageBounds.Height)

                 {

                     e.HasMorePages = true;

                     break;

                 }

             }

         }

         void printDocument_EndPrint(object sender, PrintEventArgs e)

         {

             this.label2.Text = "打印完成！";

         }

         void printDocument_BeginPrint(object sender, PrintEventArgs e)

         {

             intCurrentRowIndex = ;

             this.label2.Text = "开始打印！";

             Application.DoEvents();

         }

         private void Form1_Load(object sender, EventArgs e)

         {

             InitPrintDocument(this.printDocument1);

         }

         private void btn_Print_Click(object sender, EventArgs e)

         {

             this.printDocument1.Print();

         }

         private void btn_Cancle_Click(object sender, EventArgs e)

         {

             Application.Exit();

         }

     }

 }