Re: Thinking about driving from South Africa to Tanzania. Jan 29, 2013, 5:40 AM. good to hear. right now we are in SA and are thinking to make our way up to Tanzania for Safari in Mid-March (departing SA beginning of February). That would make about 6 weeks of driving.
To summarize, C# programming language can be used to build Windows app using the .NET platform, and can also be used to build Linux app using the Mono platform. It cannot be used to make an Android app, but with persistence, in theory, you can wrap it around the Android NDK framework.
C# is one of the languages that can be used in the .NET platform. Do not be confused about a programming language and the platform it uses. Any programming language in the .NET platform can be used to build desktop apps for Windows; build web apps; and interoperate in Linux. Currently there are no C# compiler that makes native Android apps.