using System;
using System.Collections.Generic;
using System.Text;
using HotelManage.Models;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<connectionStrings>
<add name="HotelManage" connectionString="Data Source=.;Initial Catalog=HotelManage;Integrated Security=True"/>
</connectionStrings>
</configuration>
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["HotelManage"].ConnectionString.ToString());
项目里引用了System.Configuration