html转换office

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace word
{
    /**//// <summary>
    /// htm2doc 的摘要说明。
    /// </summary>
    public class htm2doc : System.Web.UI.Page
    {
        protected System.Web.UI.WebControls.Button Button1;
    
        private void Page_Load(object sender, System.EventArgs e)
        {        
            // 在此处放置用户代码以初始化页面
        }
        public void ExpertControl(System.Web.UI.Control source, DocumentType type)

        {
            //设置Http的头信息,编码格式
            if (type == DocumentType.Excel)
            {