form1.cs

这是.net2005学习不可缺少的教程

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


namespace dd
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void pageSetupToolStripMenuItem_Click(object sender, EventArgs e)
        {
            printDialog1.ShowDialog();
        }

        private void printPreviewToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //lineReader = new StringReader(richTextBox1.Text);
            try
            {
                printPreviewDialog1.ShowDialog();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "打印出错", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void printToolStripMenuItem_Click(object sender, EventArgs e)
        {
            //lineReader = new StringReader(richTextBox1.Text);
            try
            {
                printDocument1.Print();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "打印出错", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            Graphics g = e.Graphics; //获得绘图对象
            float linesPerPage = 0; //页面的行号
            float yPosition = 0;   //绘制字符串的纵向位置
            int count = 0; //行计数器
            float leftMargin = e.MarginBounds.Left; //左边距
            float topMargin = e.MarginBounds.Top; //上边距
            string line = null; //行字符串
            StringReader lineReader= new StringReader(richTextBox1.Text);
            Font printFont = this.richTextBox1.Font; //当前的打印字体
            SolidBrush myBrush = new SolidBrush(Color.Black);//刷子
            linesPerPage = e.MarginBounds.Height / printFont.GetHeight(g);//每页可打印的行数
            //逐行的循环打印一页
            while(count < linesPerPage && ((line=lineReader.ReadLine()) != null))
            {
                yPosition = topMargin + (count * printFont.GetHeight(g));
                g.DrawString(line, printFont, myBrush, leftMargin, yPosition, new StringFormat());
                count++;
            }
            if(line != null)
                e.HasMorePages = true;
            else
                e.HasMorePages = false; 
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

    }
}