Updating Custom Config Section

I have a config Section in my app.config that looks like this

<configSections>
    <section name="importSettingsSection" type="MyApp.Console.Config.ImportSettingsSection, MyApp.Console"/>
</c开发者_如何学JAVAonfigSections>
<importSettingsSection>
    <serviceSettings pollInterval="50" runAt="1400" />
    <systems>
        <add name="System1" lastRunDate="12/01/2010" />
        <add name="System2" lastRunDate="12/01/2010" />
    </systems>
</importSettingsSection>

I was wondering if anyone could help me figure out how to modify the lastRunDate under the systems node at runtime.

Thanks

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You can't, you won't have write access to this file. An app.config file is not a database, write it somewhere else. A file, a database, whatever you like.