获取Excel数据OleDb

　　　　ExcelDAL exc = new ExcelDAL();
                DataTable dt = exc.ExcelToDS(path);
                foreach (DataRow dr in dt.Rows)
                {
                    modelM mm = new modelM();
                    mm.FileNamee = dr[0].ToString();
                    mm.FileType = dr[1].ToString();
                    mm.FileNum = dr[2].ToString();
                    mm.FileTime = dr[3].ToString();
                }