[wix-devs] how to create patch using Wix and VS2013

[anith raj]

Hello Team,

I m able to develop installer using Wix installer. Now m trying to develop
an  patch for existing application.

http://petermarcu.blogspot.in/2007/06/wix-building-patch-using-new-patch_29.html

I was following above link to develop the patch installer, but i got struck.

Here are my queries.

1. Which template i have to choose in VS2013 to develop an patch installer.
2. How to detect the exiting application whether its is exist or not and if
exist, which version i have ?
3. how to get the installed location of existing application ?
4. If m copying the services then how to stop the services and install and
again start the services.

T
​hanks in advance

Regards
Anith​