Web.config和App.config配置连接字符串
读取配置文件,获取连接字符串
<connectionStrings>
<add name="connString" connectionString="server=.;uid=sa; pwd=123456; database=SchoolDB;"/>
connectionStrings>
<appSettings>
<add key="connString" value="server=.;uid=sa; pwd=123456; database=SchoolDB;"/>
appSettings>