一、使用PrintDocument進行打印

using System;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
 
namespace PrintTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object
 
 sender, EventArgs e)
        {
            //實例化打印對象
            PrintDocument printDocument1 = new PrintDocument();
            //設置打印用的紙張,當設置為Custom的時候，可以自定義紙張的大小
            printDocument1.DefaultPageSettings.PaperSize = new PaperSize("Custum", 500, 500);
            //註冊PrintPage事件，打印每一頁時會觸發該事件
            printDocument1.PrintPage += new
 
 PrintPageEventHandler(this.PrintDocument_PrintPage);
            //開始打印
            printDocument1.Print();
        }
        private void PrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            //設置打印內容及其字體，顏色和位置
            e.Graphics.DrawString("Hello World！
 
", new Font(new FontFamily("黑體"), 24), System.Drawing.Brushes.Red, 50, 50);
        }
    }
}

二、使用PrintDialog增加打印對話框

using System;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
 
namespace PrintTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            //實例化打印對象
            PrintDocument printDocument1 = new PrintDocument();
            //設置打印用的紙張,當設置為Custom的時候，可以自定義紙張的大小
            printDocument1.DefaultPageSettings.PaperSize = new PaperSize("Custum", 500, 500);
            //註冊PrintPage事件，打印每一頁時會觸發該事件
            printDocument1.PrintPage += new PrintPageEventHandler(this.PrintDocument_PrintPage);
      
            //初始化打印對話框對象
            PrintDialog printDialog1 = new PrintDialog();
            //將PrintDialog.UseEXDialog屬性設置為True，才可顯示出打印對話框
            printDialog1.UseEXDialog = true;
            //將printDocument1對象賦值給打印對話框的Document屬性
            printDialog1.Document = printDocument1;
            //打開打印對話框
            DialogResult result = printDialog1.ShowDialog();
            if (result == DialogResult.OK)                 
                printDocument1.Print();//開始打印
        }
        private void PrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            //設置打印內容及其字體，顏色和位置
            e.Graphics.DrawString("Hello World！", new Font(new FontFamily("黑體"), 24), System.Drawing.Brushes.Red, 50, 50);
        }
    }
}

打印對話框如下圖所示：

三、使用PrintPreviewDialog增加打印預覽對話框

using System;
using System.Drawing;
using System.Drawing.Printing;
using System.Windows.Forms;
 
namespace PrintTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            //實例化打印對象
            PrintDocument printDocument1 = new PrintDocument();
            //設置打印用的紙張,當設置為Custom的時候，可以自定義紙張的大小
            printDocument1.DefaultPageSettings.PaperSize = new PaperSize("Custum", 500, 500);
            //註冊PrintPage事件，打印每一頁時會觸發該事件
            printDocument1.PrintPage += new PrintPageEventHandler(this.PrintDocument_PrintPage);
      
            //初始化打印預覽對話框對象
            PrintPreviewDialog printPreviewDialog1 = new PrintPreviewDialog();
            //將printDocument1對象賦值給打印預覽對話框的Document屬性
            printPreviewDialog1.Document = printDocument1;
            //打開打印預覽對話框
            DialogResult result = printPreviewDialog1.ShowDialog();
            if (result == DialogResult.OK)                 
                printDocument1.Print();//開始打印
        }
        private void PrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            //設置打印內容及其字體，顏色和位置
            e.Graphics.DrawString("Hello World！", new Font(new FontFamily("黑體"), 24), System.Drawing.Brushes.Red, 50, 50);
        }
    }
}

打印時，會顯示下圖所示預覽畫面：

註意：PrintDialog與PrintPreviewDialog位於名稱空間System.Windows.Forms（程序集為System.Windows.Forms.dll）中，而PrintDocument位於名稱空間System.Drawing.Printing（程序集為System.Drawing.dll）中。

[轉載]PrintDocument,PrintDialog與PrintPreviewDialog用法總結