app.config文件
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
</configSections>
<connectionStrings>
<add name="LinqOperSQL.Properties.Settings.db_05ConnectionString"
connectionString="Data Source=(local);Initial Catalog=db_05;User ID=sa"
providerName="System.Data.SqlClient" />
</connectionStrings>
<appSettings>
<add key="strCon" value="Data Source=(local);Database=db_09;Uid=sa;Pwd=Zz208;"/>
</appSettings>
</configuration>
引用
string strCon = System.Configuration.ConfigurationManager.AppSettings["strCon"].ToString(); //引用要添加 system.configuration