asp.net将本地Excel上传到服务器并把数据导入到数据库

前台代码：　

  <td class="formLabel">
                批量修改：
                </td>
                 <td  class="formInput">
                <asp:FileUpload ID="FileUpload1" runat="server"/>
                <asp:Button ID="Button3" runat="server" OnClick="Button3_Click" Text="上傳" CssClass="button3"/>
                </td>

后台代码

 protected void Button3_Click(object sender, EventArgs e)
        {
            if (FileUpload1.HasFile == false)
            {
                WebUtils.Alert(this, "請選擇Excel文件！", "StorMaintain.aspx");
                return;

            }
            string IsXLS = System.IO.Path.GetExtension(FileUpload1.FileName).ToString().ToLower();
            if (IsXLS != ".xls")
            {

                WebUtils.Alert(this, "只能選擇Excel文件！", "StorMaintain.aspx");

                return;//当选择的不是Excel文件时,返回

            }
                     SqlConnection conn = new SqlConnection("server=10.56.10.21;database=MTLBPM;uid=sa;pwd=@seshMTLK2");
                conn.Open();
                //string strpath = FileUpload1.PostedFile.FileName.ToString();

                //string filename = FileUpload1.FileName;
               //存取的文件路径
                string strpath = this.Server.MapPath("..\\..\\Upload\\") + FileUpload1.FileName;
                string filename = FileUpload1.FileName;
                FileUpload1.PostedFile.SaveAs(strpath);
                FileUpload1.Dispose();

                DataSet ds = ExcelDs(strpath, filename);

            DataRow[] dr = ds.Tables[].Select();

            int rowsnum = ds.Tables[].Rows.Count;

                if (rowsnum == )
                {

                    WebUtils.Alert(this, "Excel表为空！", "StorMaintain.aspx");  //当Excel表为空时,对用户进行提示并跳转到相应页面   

                }

                else
                {
                    for (int i = ; i < dr.Length; i++)
                    {
                        //Excel表所对应的栏位,只能是英文,中文栏位报错（不知道为什么？）
                   string tFacPartNum, tPrice, tPN3, tCustomer;
                        tFacPartNum = dr[i]["FacPartNum"].ToString().Trim();
                        tPrice = dr[i]["price"].ToString().Trim();
                        tPN3 = dr[i]["3PN"].ToString().Trim();
                        tCustomer = dr[i]["Customer"].ToString().Trim();
                        string sqlcheck = "select count(0) num from dbo.SD_StorAmount where FacPartNum='" + tFacPartNum + "'";
                        bool ch = check(sqlcheck);
                         //判断厂内料号是否存在
                        if (ch)
                        {
                      //为false则插入数据
                            string insertStr1 = "insert into dbo.SD_StorAmount(FacPartNum,Price,PN3,Customer) values('" + tFacPartNum + "','" + tPrice + "','" + tPN3 + "','" + tCustomer + "')";
                            SqlCommand cmd = new SqlCommand(insertStr1, conn);

                            cmd.ExecuteNonQuery();

                        }

                        else
                        {
                            string updateStr = "update dbo.SD_StorAmount set Price='" + tPrice + "' where  FacPartNum='" + tFacPartNum + "'";
                            SqlCommand cmd = new SqlCommand(updateStr, conn);
                            cmd.ExecuteNonQuery();
                        }

                   }

                    try
                    {

                        WebUtils.Alert(this, "保存成功！", "StorMaintain.aspx");

                    }
                    catch (Exception ee)
                    {

                        WebUtils.Alert(this, ee.Message);
                    }

                }
                conn.Close();

        }
        //导入功能
        public DataSet ExcelDs(string filenameurl, string table)
        {
                    // 此语句为Excel2003适用
            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;          

        }
        //Check 方法判断是否存在记录
        public bool check(string str)
        {
              //
            using (SqlConnection conn = new SqlConnection("server=10.56.10.21;database=MTLBPM;uid=sa;pwd=@seshMTLK2"))
            {

                using (SqlCommand cmd = new SqlCommand(str, conn))
                {

                    conn.Open();

                    //通过ExecuteScalar()方法返回count值

                    int n = (int)cmd.ExecuteScalar();

                    return n >  ? false : true;

                                }

            }

        }

在服务器上要确保已安装了Excel，并且具有读写目标文件夹的权限。