.net framework forward compatibe?

Question

Hello, my app in .net framework 4.6.1 runs on Windows 8.1 with .net 4.5.1, but why?

On a new Win8.1 setup, .net framework 4.5.1 is pre-installed, but I have set my app to require minimum .net 4.6.1, so why it should run on lower .net versions? Very unexpected behaviors will happen!

OK I know how to detect the installed .net framework version on start-up, my question is that is there any other way to prevent it via Visual Studio itself? and not my coding? Maybe some property I'm not aware of?
Thanks

Answer 1

Hi @OSVBNET ,
You can set the .net framework version target to 4.6.1 in 'Launch Condition' in Visual Studio Setup Project.

1. Select installer project
2. In Solution Explorer or Solution Navigator click on the icon at the top of the panel "Launch Conditions Editor" (In VS2010 its the icon with binoculars, in VS2015 and VS2017 the icon is a sheet of paper with a filter in front of it.
3. Under Launch Conditions, Select ".Net framework" on the right in "Properties" Select "Version" you will see a drop down. change the framework to your target framework.
4. Build and install.

Best Regards.
Jiachen Li

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