NSIS: Find and download .Net Version

Question

How can I get the version of .NET with NSIS? And if I don't have the necessary version, it redirects me to a site to download it.

I've found some solutions to this, but they usually have some hard coded stuff (e.g. dozens of specific links).

Is there some good solution for this?

Thank you

note: I dont want to use windows installer/clickonce.

Answer 1

There is no singular version of .NET. You could have 2.0 installed but not 1.1, or vice versa; you could have 3.5 installed which would include 2.0 and 3.0; etc. So you can't, in that sense, check for the version. Instead, you should probably check whether the particular version you need exists.

• The NSIS site has a script for checking the registry for all installed versions, then the file system for whether an mscorlib.dll exists for each of them.
• A number of alternatives can be found here.
• You could use tools like this one to detect the available versions.

Answer 2

Take a look here. I believe I've changed some things from the NSIS forums, but this works quite well

http://stochfit.svn.sourceforge.net/viewvc/stochfit/trunk/StochFitMain/Installer.nsi?revision=108&view=markup