string strConn = " + "Data Source=" + path + ";Extended Properties=Excel 12.0;";//需要安裝accessDatabaseEngine                OleDbConnection conn = new OleDbConnection(strConn);                conn.Open();                DataTable dt = conn.GetSchema("Tables");                DataTableReader reader = new DataTableReader(dt);                var ds = new DataSet();                while (reader.Read())                {                    string s = reader["Table_Name"].ToString();//取得sheet名                    var strExcel = string.Format("select * from [{0}]", s);                    var myCommand = new OleDbDataAdapter(strExcel, strConn);//獲取sheet中的數據                    myCommand.Fill(ds);                }                return ds;