WebBrowserプレビュー画面の設定

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

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        private Bitmap bmp;  // 印刷イベントに渡すブラウザイメージ
        public Form1()
        {
            InitializeComponent();
            webBrowser1.Navigate("http://www.google.co.jp/");  // 適当にブラウズ
        }

        private void button1_Click(object sender, EventArgs e)
        {

            System.Drawing.Printing.PrintDocument pd = new System.Drawing.Printing.PrintDocument();
            pd.PrintPage += new System.Drawing.Printing.PrintPageEventHandler(pd_PrintPage);
            pd.DefaultPageSettings.Landscape = true; // 横向き 
            pd.DefaultPageSettings.PaperSize = new PaperSize("A4", 827, 1169);// 用紙サイズ
            PrintPreviewDialog ppd = new PrintPreviewDialog();
            ppd.Document = pd;
            ppd.SetBounds(0, 0, 1024, 768); // プレビュー画面サイズ 
            ppd.Document.DocumentName = "サンプル";

            // 追加開始
            Rectangle rect = this.RectangleToScreen(webBrowser1.Bounds);
            bmp = new Bitmap(rect.Width, rect.Height, PixelFormat.Format32bppArgb);
            Graphics g = Graphics.FromImage(bmp);
            g.CopyFromScreen(rect.X, rect.Y, 0, 0, rect.Size, CopyPixelOperation.SourceCopy);
            // 追加終了

            //印刷プレビューダイアログを表示する 
            ppd.ShowDialog();
            
        }
        private void pd_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            e.Graphics.DrawImage(bmp, new Point(0, 0));
        }
    }
}