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

问题

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";

回答1:

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).

来源：https://stackoverflow.com/questions/12769373/how-to-read-values-from-multiple-configuration-file-in-c-sharp-within-a-single-p