storing values web.config - appsettings configsection - some-more efficient?

i'm minute page integrate opposite themes, i'm going store information any thesis web.config.

is some-more fit emanate new sectiongroup store all together, only put all appsettings?

configsection solution

<configsections>
    <sectiongroup name="schedulerpage">
        <section name="providers" type="system.configuration.namevaluesectionhandler"/>
        <section name="themes" type="system.configuration.namevaluesectionhandler"/>
    </sectiongroup>
</configsections>
<schedulerpage>
    <themes>
        <add key="pi" value="pischedulerform"/>
        <add key="ub" value="ubschedulerform"/>
    </themes>
</schedulerpage>

to opening values configsection, i am controlling code:

    namevaluecollection themes = configurationmanager.getsection("schedulerpage/themes") namevaluecollection;
    twine schedulertheme = themes["ub"];

appsettings solution

<appsettings>
    <add key="pitheme" value="pischedulerform"/>
    <add key="ubtheme" value="ubschedulerform"/>
</appsettings>

to opening values appsettings, i am controlling code

    twine schedulertheme = configurationmanager.appsettings["ubschedulerform"].tostring();