1、获取<connectionStrings>节点内的信息(用于连接数据库)
<connectionStrings>
<add name="myDB" connectionString="Data Source=192.168.253.31;Initial Catalog=DBName;User ID=sa;pwd=******"
providerName="System.Data.SqlClient"
</connectionStrings>
//winform程序读取配置文件
string constr=System.Configuration.ConfigurationManager.ConnectionStrings["myDB"].ConnectionString;
//web程序读取配置文件
string constr=System.Web.Configuration.WebConfigurationManager.ConnectionStrings["myDB"].ConnectionString;
2、获取<appSettings>节点内的信息
<appSettings>
<add key="constValue1" value="abc"/>
<add key="constValue2" value="efg"/>
</appSettings>
//读取配置文件
ConfigurationManager.AppSettings["constValue1"]
3、自定义配置文件(没有用过标记一下)
http://www.cnblogs.com/Gerry-BJ/archive/2008/08/06/1261712.html