PrintDocument组件打印

运行效果：

代码：

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 = 0;

        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 = 10;
            int y = 10;

            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 + 5;

                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 = 0;
            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();
        }
    }
}

完成。