Configuration Files

Configuration files are XML files that can be changed as needed. Developers can use configuration files to change settings without recompiling applications. Administrators can use configuration files to set policies that affect how applications run on their computers.


Managed code can use the classes in the System.Configuration namespace to read settings from the configuration files, but not to write settings to those files.

This section describes the syntax of configuration files and provides information about the three types of configuration files: machine, application, and security.

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