How to save to external config file

Question

In ABC.exe.config (app.config)

<configuration>
    <appSettings file="MySettings.config">
        <add key="setting1" value="1" />
    </appSettings>
<configuration>

Here I use "file" attribute, not "configSource", because I want to define default values. How to save to external config file "MySettings.config"? I must keep "ABC.exe.config" unchanged because it will be overwritten on program upgrade without notice. All global settings must be preserved in "MySettings.config"

possible duplicate of Automatically "upgrade" user settings from previous version of app.config file? — McGarnagle
No! This is not the duplicate. I do not use the upgrade method, which stores settings in User account (local). I need to save global settings which stores in the exe folder. — linquize

Tommy Grovnes Tommy Grovnes · Accepted Answer · 2012-09-15T05:42:40

There is an example in the MSDN documentation , the approach is to handle the write to the file yourself, i.e. treat it as a "regular" XML file for example.

How to save to external config file

1 Answers