How to read values from multiple Configuration file in c# within a single project?

Question

Here in my project I have two application configuration files called app.config and accessLevel.config. Now using the OpenExeConfiguration I was able to access the app.config.exe file but not the accessLevel.config. Please help on this.

The main reason I have 2 config files is to show the difference and make the code simple. I need to read the values from the accessLevel.config in my C# code.

Tried the below code but no use:

System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); 
config.AppSettings.File = "App2.config";

Mike · Accepted Answer · 2021-02-09 10:57:41Z

28

See here.

Put this in your App.config:

<appSettings file="accessLevel.config"/>

And then have another file called accessLevel.config like this:

<?xml version="1.0" encoding="utf-8" ?>
<appSettings>
  <add key="TestSetting" value="TestValue"/>
</appSettings>

And then you can access your config values in code like this:

string value = ConfigurationManager.AppSettings["TestSetting"];

Make sure that accessLevel.config is set to copy to the output directory (right click the file in Visual Studio -> Properties -> Copy To Output Directory -> Copy if Newer).

edited Feb 9, 2021 at 10:57

answered Oct 7, 2012 at 13:56

Mike

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6 Comments

Praveen Over a year ago

Should I have this line in app.config.exe?

Mike Over a year ago

Have edited and fixed up - see if you can get that working? Is it appSettings you are trying to move into another file, or some other config section? Either way, the same principle applies.

Praveen Over a year ago

@Aniket Done. sorry, I missed to pick it on the right time.

Jan 'splite' K. Over a year ago

Please note that the second config (accessLevel.config) begins with <appSettings /> element, not default <configuration /> element. I spend about 10 minut before i realize this ;)

Erik Over a year ago

How is this "reading values from multiple Configuration files"? Only values from accessLevel.config are read, via app.config...

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