在做excel导入功能时，已经将文件上传至服务器上，但是读取的时候时常报‘未指定的错误’，按照网上查找的解决方法试了很多种，就是不管用，代码如下：

 string sPath = "C:\\Temp\\" + this.FUPatch.FileName.Replace(".xls", "")   + DateTime.Now.ToString().Replace(":","").Replace(" ","").Replace("-","") + ".xls";

    this.FUPatch.SaveAs(sPath);

string strcon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source= " + sPath + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1;'";
                  
                    DataTable dtQualityLevel = new DataTable("default");
                    OleDbConnection connExecel = new OleDbConnection(strcon);
                    try
                    {

                        string strsql = "select  申请单位,项目名称,WBS订单号,合同号,付款方式,币种,合同金额,变更金额,合同总价,本次付款金额,累计付款金额,资金计划序号,申请人,供应商编码,收款单位,开户银行,银行账户,开户银行地址,付款内容,付款条件,付款日期,附件名称,费用科目,预算号,合同类别,年度预算金额,年度预算执行比例,合同签订日期,要求到货日期,实际到货日期,备注 from [Sheet1$] where [本次付款金额] IS NOT NULL";
                        OleDbDataAdapter dpQualityLevel = new OleDbDataAdapter(strsql, connExecel);

                        connExecel.Open();
                        dpQualityLevel.Fill(dtQualityLevel);

                        this.GVList.DataSource = dtQualityLevel;
                        this.GVList.DataBind();
                    }
                    catch (Exception ex)
                    {
                        Response.Write(ex.StackTrace);
                        connExecel.Close();
                    }
                    finally {
                        if (connExecel.State == ConnectionState.Open)
                        {
                            connExecel.Close();
                        }
                    }