asp.net 读取Excel

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Data.OleDb;
using System.IO;

namespace VSTest.RedExcel
{
    public partial class ShowFromExcel : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string xlsName = "ty.xls";
            string xlsPath = Server.MapPath(xlsName);

            if (!File.Exists(xlsPath))
            {
                throw new Exception(string.Format("这个“{0}”Excel 没有找到！", xlsName));
            }

            string str = "Provider=Microsoft.Jet.OLEDB.4.0;" +
                        "Extended Properties=Excel 8.0;" +
                        "data source=" + xlsPath;
            string sql = "select * from [Sheet1$]";
            OleDbConnection con = new OleDbConnection(str);
            con.Open();
            OleDbDataAdapter da = new OleDbDataAdapter(sql, con);
            DataSet ds = new DataSet();
            da.Fill(ds);
            GridView1.DataSource = ds.Tables[0].DefaultView;
            GridView1.DataBind();
               
        }
    }
}

说明：Sheet1$ 表示访问Excel 区域的名称