Get the user.config of one project in another project with same name of exe.

Actually the latest reply clarifies things; it does not make things simple. The original question made the problem too simple so it was difficult to understand what you need to do.

The original question said "another project". One problem that beginners often do is to speak in terms of projects instead of applications. The application is the same, correct? In other words, as far as the installer is concerned, it will update the software to the newer version; in other words, the installer will modify or replace the previous version when the newer version is installed. Right?

It seems to me that the easiest solution for you, the user and the computer is that when the new version is installed, the setup program could read the previous configuration data then write the data in the new configuration. The application itself does not need to know about the previous version, at least not for the configuration data.

Dear Frogleg and Sam,
Let's make it simple.

I'm going to deploy new version of an application. In essence, it's totally new project but identical to previous application with some new features.
So, My user save his/her preferences in previous application and I store them in user.config file in Local Setings of that user. (As VS do usually)

Now, I'm try to retrieve those settings in my new application. This is to facilitate the user to not mention the preferences again. His/Her previous preferences will be retain in new version.

Note: Application exe have same name as previous application exe.

Now, please guide me how to do that.

Thanks

Itz.Irshad 

I think there are various ways to interpret the description you provide and there are probably multiple ways of doing it.

It would help to have some hints at least to what your instrutor has taught you. I think it would help if you provided more of what the instructor said than just the problem description that has been provided here.