C# Getting a string from one config file to be used by multiple projects

In my project I have a Windows Service and a WCF Service doing some actions on the same folder on a computer. The location of that folder will be given by the user within an app.config file that is included in the Windows Service project.

Now, I want the WCF Service to know the location of that folder (the folder given by the user), without the user having to type it into the WCF Servi开发者_如何学Pythonce config file as well.

How would I go about doing that?

Thanks!

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There are lots of possibilities here:

1. Add the path of the Windows Service's config file as a setting in the WCF service's config file, and use that path to read the file with an XML Reader.

2. Store the folder path in some centralized system, like a database or the registry, and have both services obtain the setting from that centralized placed.

3. Specify the path in each individual config file, but use a post build event to make sure they stay current. (For instance, maybe the post-build event retrieves the config setting from the DB and then writes it to the config file)

4. Have one service expose the configuration setting as a public service call. For instance, the WCF service could invoke a method on the Windows service to determine which path to process.

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You can place it in the Machine.config, and both the WCF application and the Windows service can access it.

http://msdn.microsoft.com/en-us/library/ms229697(VS.71).aspx