Why VS2005.IDE adds app.config to C# Class Library projects?

[Maxwell2006]

Hi,

As far as I know, a class library project cannot have any app.config
dedicated to itself and it always depends on the main application to provide
the .config settings.

Based on above, I am confused when I see that VS2005 adds an app.config file
upon I add a web service to my dll class library and stores the URL address
to the asmx file within that app.config file. Obviously that app.config file
is useless. Do I miss any best practices or this is a problem within visual
studio 2005 IDE?

Thank you,
Max

 

[Michael Nemtsev]

Hello Maxwell2006,

M> As far as I know, a class library project cannot have any app.config
M> dedicated to itself and it always depends on the main application to
M> provide the .config settings.

yep, but you can use Xml to open file manually and use it

M> Based on above, I am confused when I see that VS2005 adds an
M> app.config file upon I add a web service to my dll class library and
M> stores the URL address to the asmx file within that app.config file.
M> Obviously that app.config file is useless. Do I miss any best
M> practices or this is a problem within visual studio 2005 IDE?

AFAIK, in this case App.config is not used at all, at least it works fine
where I met this

---
WBR,
Michael Nemtsev :: blog: http://spaces.live.com/laflour

"At times one remains faithful to a cause only because its opponents do not
cease to be insipid." (c) Friedrich Nietzsch

 

[Kevin Yu [MSFT]]

Hi Max,

The IDE adds an app.config file to the class library project to store the
URL for the web service in this case. When compiling the project, this URL
in the app.config file will be made as the default URL for the web service.

When you have a, for example, windows form app calling the class library,
and the web service has been moved. You can add the same key in the winform
app.config file, and the class library will then use the new URL instead of
the default one.

If anything is unclear, please feel free to let me know.

Kevin Yu
Microsoft Online Community Support

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