How to stop .NET setup based on registry value?

Question

I set up a Search Registry Launch Condition in my .NET setup project. The value I'm looking for is a path of another program where I need to install as a plugin. Now, this works.

But I don't know what value is returned if it cannot find the registry key (program not installed). I need this value to create a setup condition around it.

Answer 1

I found a work-around and used a Launch Condition in the Requirements on Target Machine section.

Followed the tips here: http://msdn.microsoft.com/en-us/library/h0z89y5d(v=vs.71).aspx