using Microsoft.Extensions.Configuration; using MySql.Data.MySqlClient; using POSCorePrint.Jobs; using System; using System.Collections.Generic; using System.Data; using System.Text; namespace POSCorePrint { internal class Constant { internal static int port = 9100; internal static IConfigurationRoot Configuration; internal static string ConnectionString; internal static double PrintBackTime;//打印多久之前的数据:分钟 internal static double SaveHisDataDays;//只保留最近几天的打印数据:天 } }