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();
}

}