C# - How to create, read from and write to a custom configuration file?
Posted on 2011-03-24
I have a C# console app that I have to modify.
The app uses a config file to save to and read from some values that could be used for future runs. It does not use properties file for that because with the properties file you still can write to but that properties file would be different for each user, and this should be user independent.
That;s why the config file is used.
Currently, the app has an app.config file that resides in the main directory where all the source code is located, and <app_name>.config file that is located in the executable file's directory (\bin\Debug in this case). The values stored by the application in the <app_name>.config file that is located in the executable file's directory.
But every time the application is recompiled, the <app_name>.config file is being overwritten by the app.config file located in source directory, and the custom values are reset to the values stored in the app.config file.
Questions: 1) is it possible to change valued in the app.config file as well as in the <app_name>.config file (by the application) so that the new values are not reset during compilation.
2) If not, what are other options? My idea is to use a custom config file that would be could be used to write to and read from custom data just as the <app_name>.config file is.
But how and where to create, read from and write to a custom configuration file?
Code samples would be much appreciated.
The current code to read from and to write to looks like this:
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
string storedValue = config.AppSettings.Settings["Param1"].Value
string newValue = "param1_newValue";
config.AppSettings.Settings["Param1"].Value = newValue;