窗体代码

using System;
using System.Drawing;
using System.Drawing.Printing;
using System.IO;
using System.Windows.Forms;

namespace myprint
{
    public partial class Form1 : Form
    {
        private System.Windows.Forms.Button printButton;
        private Font printFont;
        private StreamReader streamToPrint;

        public Form1()
        {
            // The Windows Forms Designer requires the following call.
            InitializeComponent();
        }

        // The Click event is raised when the user clicks the Print button.
        private void printButton_Click(object sender, EventArgs e)
        {
            try
            {
                streamToPrint = new StreamReader
                   (@"C:\Users\hi\Downloads\Compressed\PrintImage\hello.txt");
                try
                {
                    printFont = new Font("Arial", 10);
                    PrintDocument pd = new PrintDocument();
                    pd.PrinterSettings.PrinterName = "printName"; //设置要调用的打印机名
                    pd.PrintController = new StandardPrintController();//不弹出正在打印第几页对话框
                    pd.PrintPage += new PrintPageEventHandler
                       (this.pd_PrintPage);
                    pd.Print();
                }
                finally
                {
                    streamToPrint.Close();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        // The PrintPage event is raised for each page to be printed.
        private void pd_PrintPage(object sender, PrintPageEventArgs ev)
        {
            float linesPerPage = 0;
            float yPos = 0;
            int count = 0;
            float leftMargin = ev.MarginBounds.Left;
            float topMargin = ev.MarginBounds.Top;
            string line = null;
            // Calculate the number of lines per page.
            linesPerPage = ev.MarginBounds.Height /
               printFont.GetHeight(ev.Graphics);

            // Print each line of the file.
            while (count < linesPerPage &&
               ((line = streamToPrint.ReadLine()) != null))
            {
                yPos = topMargin + (count *
                   printFont.GetHeight(ev.Graphics));
                ev.Graphics.DrawString(line, printFont, Brushes.Black,
                   leftMargin, yPos, new StringFormat());
                //ev.Graphics.DrawImage();
                count++;
            }

            // If more lines exist, print another page.
            if (line != null)
                ev.HasMorePages = true;
            else
                ev.HasMorePages = false;
        }

    }
}

在Form1.Designer.cs中如下代码

 // The Windows Forms Designer requires the following procedure.
    private void InitializeComponent()
    {
        this.components = new System.ComponentModel.Container();
        this.printButton = new System.Windows.Forms.Button();

        this.ClientSize = new System.Drawing.Size(504, 381);
        this.Text = "Print Example";

        printButton.ImageAlign =
           System.Drawing.ContentAlignment.MiddleLeft;
        printButton.Location = new System.Drawing.Point(32, 110);
        printButton.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
        printButton.TabIndex = 0;
        printButton.Text = "Print the file.";
        printButton.Size = new System.Drawing.Size(136, 40);
        printButton.Click += new System.EventHandler(printButton_Click);

        this.Controls.Add(printButton);
    }

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