How to use C# to know if .net framework 2.0 has been installed or not?

Question

Hi,

I am doing a windows application using C# and VS 2005. I would like to know if  there is a .net framework 2.0 has been installed on a computer or not. If it has not been installed, the program will install it, otherwise just ignore it. How can I use C# to know  if .net framework 2.0 has been installed or not? Thanks.

Answer 1

You've got a chicken and egg problem.  You can't use C# to check if .NET is installed, C# requires .NET to be installed.  You could use a scripting language to check if the HKLM\Software\Microsoft\.NETFramework\v2.0.50727 registry key is present.

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Hans Passant.

Answer 2

Thanks for your reply. Any ideas about the scripting language to this registry or any hyperlink for it?

Answer 3

Scripting languages are a dime a dozen.  You should probably pick something that makes sense within the context of what you're trying to do.  Use this for example.

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Hans Passant.