asp.net（C#） 上传Execl文件 并插入数据到数据库实例

using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Data.OleDb;using System.Data.SqlClient;public partial class InserPosAll : System.Web.UI.Page{    public DataSet ExecleDs(string filenameurl, string table)    {        string strConn = "Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + filenameurl + ";Extended Properties='Excel 8.0; HDR=YES; IMEX=1'";        OleDbConnection conn = new OleDbConnection(strConn);        OleDbDataAdapter odda = new OleDbDataAdapter("select * from [sheet1$]", conn);        DataSet ds = new DataSet();        odda.Fill(ds, table);        return ds;    }    protected void Page_Load(object sender, EventArgs e)    {    }    protected void Button1_Click(object sender, EventArgs e)    {        if (FileUpload1.HasFile == false)        {            Response.Write("<script>alert('请您选择Excel文件')</script> ");            return;//当无文件时,返回               }        //string IsXls = System.IO.Path.GetExtension(FileUpload1.FileName).ToString().ToLower();        //if (IsXls != ".xls")        //{        //    Response.Write("<script>alert('只可以选择Excel文件')</script>");        //    return;//当选择的不是Excel文件时,返回               //}        String serverPath = Server.MapPath("~/") + FileUpload1.FileName;        FileUpload1.SaveAs(serverPath);        string error = null;        SqlConnection conn = new SqlConnection("data source=10.47.0.7;database=pos_inquire;user=sa;password=19730524");        conn.Open();        string Sqlstrl = " Truncate table pos_all";        SqlCommand comd = new SqlCommand(Sqlstrl, conn);        comd.ExecuteNonQuery();        //string strpath = FileUpload1.PostedFile.FileName.ToString();   //获取Execle文件路径               string filename = FileUpload1.FileName;                       //获取Execle文件名                 //DataSet ds = conn.ExecleDs(strpath,filename);        DataSet ds = ExecleDs(serverPath, filename);        DataRow[] dr = ds.Tables[0].Select();                        //定义一个DataRow数组               int rowsnum = ds.Tables[0].Rows.Count;        if (rowsnum == 0)        {            Response.Write("<script>alert('Excel表为空表,无数据!')</script>");   //当Excel表为空时,对用户进行提示              }        else        {            string 商户编号;            string 装机日期;            string 手续费率;            string 商户名;            string 主办行;            string 经办人;            string 装机方;            string 开户行;            string 有效性;            string 装机台数;            string POS类型;            for (int i = 0; i < dr.Length; i++)            {                商户编号 = dr[i][0].ToString();              //string dh = dr[i]["YongHuMiMa"].ToString();                        装机日期 = dr[i][1].ToString();                手续费率 = dr[i][2].ToString();                商户名 = dr[i][3].ToString();                主办行 = dr[i][4].ToString();                经办人 = dr[i][5].ToString();                装机方 = dr[i][6].ToString();                开户行 = dr[i][7].ToString();                有效性 = dr[i][8].ToString();                装机台数 = dr[i][9].ToString();                POS类型 = dr[i][10].ToString();                string insertstr = "insert into pos_all(商户编号,装机日期,手续费率,商户名,主办行,经办人,装机方,开户行,有效性,装机台数,POS类型) values('" + 商户编号 + "','" + 装机日期 + "','" + 手续费率 + "','" + 商户名 + "','" + 主办行 + "','" + 经办人 + "','" + 装机方 + "','" + 开户行 + "','" + 有效性 + "','" + 装机台数 + "','" + POS类型 + "')";                SqlCommand cmd = new SqlCommand(insertstr, conn);                try                {                    cmd.ExecuteNonQuery();                }                catch (MembershipCreateUserException ex) //捕捉异常                                    {                    Response.Write("<script>alert('创建用户:" + ex.Message + "')</script>");                }            }            Response.Write("<script>alert('Excle表导入成功!')</script>");            System.IO.File.Delete(serverPath);            Response.Redirect("List_Posall.aspx");                    }        conn.Close();    }    }