Several app.config files for one executalbe

I have a WindowsForms project that uses its app config to store some appSettings. Let's call it WinFormsApp.exe

WinFormsApp uses classes from a library that basicaly exposes WCF server connectivity. Let's call it WCFClass.dll

WCFClass.dll is a separate project in a solution and it has its own app.config it which is holds the WCF config.

How can I have two config files loaded at开发者_Go百科 the start of WinFormsApp.exe, so that I don't have to manually merge the contents of two app.configs in one?

For WCF you must merge these configs - system.serviceModel section must be in the main application config. Configuration file for .dll is not used. It is used only by WCF test client.