// 读取Excel
    public static DataTable GetExcelFileData(string filePath)
    {
        OleDbDataAdapter oleAdp = new OleDbDataAdapter();
        OleDbConnection oleCon = new OleDbConnection();
        string strCon = "Provider=Microsoft.Jet.oleDb.4.0;data source=" + filePath + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'";
        try
        {
            DataTable dt = new DataTable();
            oleCon.ConnectionString = strCon;
            oleCon.Open();
            DataTable table = oleCon.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
            string sheetName = table.Rows[0][2].ToString();
            string sqlStr = "Select * From [" + sheetName + "]";
            oleAdp = new OleDbDataAdapter(sqlStr, oleCon);
            oleAdp.Fill(dt);
            oleCon.Close();
            return dt;
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            oleAdp = null;
            oleCon = null;
        }
    }

public static void excelInsertDataForInsert(DataTable dtExcel,string UserName)
    {
        using (MAUCPODataContext db = new MAUCPODataContext())
        {
            Dictionary<string, string> listPN_Lavel=getPN_Lave();
            var query = from q in dtExcel.AsEnumerable()
                        where !string.IsNullOrEmpty(q["POPGI_T"].ToString().Trim()) &&
                              !string.IsNullOrEmpty(q["PONo"].ToString().Trim()) &&
                              !string.IsNullOrEmpty(q["PN"].ToString().Trim()) &&
                              !string.IsNullOrEmpty(q["QTY"].ToString().Trim()) &&
                              !string.IsNullOrEmpty(q["Price"].ToString().Trim())
                        select new
                        {
                            POPGI_T = q["POPGI_T"].ToString().Trim(),
                            PONo = q["PONo"].ToString().Trim(),
                            PN = q["PN"].ToString().Trim(),
                            QTY = q["QTY"].ToString().Trim(),
                            Price = q["Price"].ToString().Trim()
                        };
            List<MAUCPO> listEntity = new List<MAUCPO>();
            foreach (var q in query)
            {
                MAUCPO Entity = new MAUCPO();
                Entity.CREATE_t = DateTime.Now;
                Entity.CreateBy = UserName;
                Entity.PN = q.PN;
                Entity.PONo = q.PONo;
                Entity.POPGI_T = DateTime.Parse(q.POPGI_T);
                Entity.Price = decimal.Parse(q.Price);
                Entity.Priority = int.Parse(listPN_Lavel[q.PN]);
                Entity.ProcessFlag = 'N';
                Entity.QTY = int.Parse(q.QTY);
                listEntity.Add(Entity);
            }
            db.MAUCPO.InsertAllOnSubmit(listEntity);
            db.SubmitChanges();
        }
    }