问题:

Is it possible to have two app.config files where one app.config serves as a container for second (nested) app.config file? I would like to reference specific sections of a nested file from the outer one.

Why I need this is because of source control issue. For detailed description see this

Any other solution for the root problem is greatly appreciated.

回答1:

You can reference other config files yes, so you can have static stuff in one file, and machine specific stuff in another.

Eg, to put app settings in a seperate file, in a subfolder called "configuration":

<appSettings configSource="Configuration\AppSettings.config"/>

Then in the AppSettings.config, just include the appSettings tag as normal:

<appSettings>
   <add key="somekey" value="someValue" />
</appSettings>

回答2:

If I understand your question correctly, the answer is "Yes". See the section on "Using External Configuration Files" in this article. It's not nesting the files as your title would imply, but based on the question text...

http://msdn.microsoft.com/en-us/library/ms254494.aspx