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Editorial Team
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Asked: 2026-05-18T11:26:02+00:00

I have a Windows application developed using Visual Studio 2008 (C#). It has a

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I have a Windows application developed using Visual Studio 2008 (C#).
It has a app.config file, where various configuration related information are kept. After creating an installer for the project and installing it, there are no app.config file being copied to the installed directory. However, the functionalities that rely on settings in this file seem to work.

Now one of these settings is a database connection string, which obviously needs changing when installed in a different PC. My question is, how to have the app.config file available with the Setup file so that it can be configured later?

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1 Answer

  1. Editorial Team

    The app.config is copied/renamed <assembly name>.config as part of the compilation process, and placed in the bin directory. If you’re using a Visual Studio Installer project (blech!), then it should have picked it up also and included it in the installer, IIRC.

    (In response to your comment to both answers)

    You can’t keep using it as “app.config”. The .NET config system searches for the configuration file whose name is the same as the entry assembly. If you renamed the file back to “app.config”, then the configuration classes would stop working.

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