如何获取app配置文件内容

App.config:

<appSettings>

<add key="FCPConnection" value="Data Source=192.168.1.88;Initial Catalog=EMRCP;User Id=sa;Password=123456;" />

<add key="FCPConnectionType" value="SQLSERVER" />

<add key="OutPutErrorMessage" value="False" />

<add key="CertName" value="WCFSecurityServerPK"/>

<add key="ServicePath" value="E:\updatefiles\"/>

</appSettings>

后台代码获取：

ConfigurationManager.AppSettings["ServicePath"].ToString().Trim();