DBACcess

1、SA 认证：
 <add key="DbHelperConnectionString" value="Data Source=WS-JACKCH-03\SQLEXPRESS;Initial Catalog=POS;User ID=sa;Password=Password01!"/>
2、Windows 认证：
 <add key="DbHelperConnectionString" value="Data Source=localhost\SQLEXPRESS;Initial Catalog=POS;Integrated Security=True"/>