winform整窗体打印（c#）

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

namespace WindowsApplication1
{
    public partial class Issuance : Form
    {//实现C 打印窗体  
        private Button printButton = new Button();
        private PrintDocument printDocument1 = new PrintDocument();

        public Issuance()
        {
            printButton.Text = "Print Form";
            printButton.Click += new EventHandler(printButton_Click);
            printDocument1.PrintPage +=
           new PrintPageEventHandler(printDocument1_PrintPage);
            this.Controls.Add(printButton);
        }

        void printButton_Click(object sender, EventArgs e)
        {
            CaptureScreen();
            printDocument1.Print();
        }
        //实现C 打印窗体  
        Bitmap memoryImage;

        private void CaptureScreen()
        {
            Graphics myGraphics = this.CreateGraphics();
            Size s = this.Size;
            memoryImage = new Bitmap(s.Width, s.Height, myGraphics);
            Graphics memoryGraphics = Graphics.FromImage(memoryImage);
            memoryGraphics.CopyFromScreen(
           this.Location.X, this.Location.Y, 0, 0, s);
        }

        private void printDocument1_PrintPage(System.Object sender,
        System.Drawing.Printing.PrintPageEventArgs e)
        {
            e.Graphics.DrawImage(memoryImage, 0, 0);
        }

        //实现C 打印窗体  

        public static void Main()
        {
            Application.Run(new Form1());
        }
    }
}