asp.net读取Web.config的<appSettings></appSettings>

读取<appSettings><addkey="SiteName"value="a"/><addkey="SiteTitle"value="b"/></appSettings>中所有信息并且进行绑定... 读取<appSettings>
<add key="SiteName" value="a" />
<add key="SiteTitle" value="b" />
</appSettings>中所有信息并且进行绑定