registering a file type with an application in windows

[kofi]

Hi everyone.

i have written an app with a file extension and need to register it in windows with an icon. I need help on how to go about this using C#.Net.

[ShahbazAshraf]

For this u have to make the setup / deployment project of that windows application and there u can assign icon for the application, this will create the setup which can be install at any windows OS machine ..

[descodav]

For this u have to make the setup / deployment project of that windows application and there u can assign icon for the application, this will create the setup which can be install at any windows OS machine ..

There are no secondary ways to do this? For example I have an application that has been in existence for many years and because of customer request I am created to extension that will have independent icons and meanings but I do not want the customer to have to reinstall the entire application again.

Is there a way that this can be removed from the install process and done independently?

[Plater]

ShahbazAshraf explanation seemed like it only assigned an icon to your executable application? (that can be done at any point from the project's property page).

As for the default file type part, I found this:
http://www.tek-tips.com/faqs.cfm?fid=3946
It's in native Win32 c++, but the jist is the same. You need to add registry keys for your application.
The reason this is normally done at instal time is that you need to know where the .exe is located, so you can reference it.