应用程序配置文件(.config)

1.首先要添加引用:System.Configuration

2.using System.Configuration;和using System.Collections;

3.在App.config文件中添加以下信息

<?xml version="1.0" encoding="utf-8" ?><configuration><configSections><section name="userinfo" type="System.Configuration.DictionarySectionHandler"/><!--以Dictionary字典键值对的形式返回配置节中的信息--></configSections><startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" /></startup><connectionStrings><add name="BillModelContainer" connectionString="Server=服务器地址;Database=BillDB;Trusted_Connection=True;" providerName="System.Data.SqlClient" /></connectionStrings><appSettings><add key="IPInfo" value="127.0.0.1" /></appSettings><!--自定义简单的配置信息--><userinfo><add key="NO1" value="张三" /><add key="NO2" value="李四" /></userinfo></configuration>

4.在main()函数中添加以下代码显示读取配置文件信息:

String ConnectionStrings = ConfigurationManager.ConnectionStrings["BillModelContainer"].ToString();Console.WriteLine("ConnectionStrings:{0}", ConnectionStrings);IDictionary dict = ConfigurationManager.GetSection("userinfo") as IDictionary;foreach (var key in dict.Keys) //遍历{Console.WriteLine("key:{0} value:{1}", key, dict[key]);}String IPInfo = ConfigurationManager.AppSettings["IPInfo"];Console.WriteLine("IP:{0}", IPInfo);Console.ReadLine();