关于c#打开一个文件，并且指定打开第几页，应该怎么实现呢？
比如我现在浏览打开一个word文档，我怎么指定它直接打开第几页呢？

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

namespace 如何打开各种文件
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {

            OpenFileDialog openFileDialog = new OpenFileDialog();
            openFileDialog.InitialDirectory = "c:\\";//注意这里写路径时要用c:\\而不是c:\
            openFileDialog.Filter = "文本文件|*.*|C#文件|*.cs|所有文件|*.*";
            openFileDialog.RestoreDirectory = true;
            openFileDialog.FilterIndex = 1;
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                textBox1.Text = openFileDialog.FileName;
            }
        }
        private void button1_Click(object sender, EventArgs e)
        {
            //定义一个ProcessStartInfo实例
            System.Diagnostics.ProcessStartInfo info = new System.Diagnostics.ProcessStartInfo();
            //设置启动进程的初始目录
            info.WorkingDirectory = Application.StartupPath;
            //设置启动进程的应用程序或文档名
            info.FileName = @textBox1.Text;
            //设置启动进程的参数
            info.Arguments = "";
            //启动由包含进程启动信息的进程资源
            try
            {

//我在这里是应该怎么指定文件打开第几页呢？
                System.Diagnostics.Process.Start(info);
            }

            catch (System.ComponentModel.Win32Exception we)
            { 
 
                MessageBox.Show(this, we.Message);
                return;
            }


        }
    }
}

[解决办法]

/// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
         
            MSWord.Application app = new MSWord.Application();
            MSWord.Document doc = app.Documents.Open(@"F:\桌面\20130322\新建文件夹\FinalProject\Word.docx");
            NextPage(doc, 1);//向后跳转一页
            string text = doc.ActiveWindow.Selection.Paragraphs[1].Range.Text.ToString();
            PreviousPage(doc, 1);//向前跳转一页
            string text1 = doc.ActiveWindow.Selection.Paragraphs[1].Range.Text.ToString();
        }

        private static void PreviousPage(MSWord.Document doc, int Count)
        {
            for (int i = 0; i < Count; i++)
            {
                Microsoft.Office.Interop.Word.WdGoToItem goPage = Microsoft.Office.Interop.Word.WdGoToItem.wdGoToPage;
                doc.ActiveWindow.Selection.GoToPrevious(goPage);
            }
        }

        private static void NextPage(MSWord.Document doc, int Count)
        {
            for (int i = 0; i < Count; i++)
            {
                Microsoft.Office.Interop.Word.WdGoToItem goPage = Microsoft.Office.Interop.Word.WdGoToItem.wdGoToPage; 
 
                doc.ActiveWindow.Selection.GoToNext(goPage);
            }
        }
    }