I am writing a library of which I would like to provide versions for various versions of the .NET Framework, say, a .NET 2.0 version and a .NET 4.0 version.
In project files, this seems to be possible by putting the target framework into a conditional PropertyGroup. However, this conditional setting does not seem to be reflected in SharpDevelop 4.4 or SharpDevelop 5.1 RC: About all project settings come with a little button that determines whether the setting is global, or specific to the configuration, or specific to the platform. However, the Target Framework of all settings has no such button.
A 2006 blogpost by Matt Ward shows that button still used to be there in SharpDevelop 3!
What happened? Is this an oversight, or was the button intentionally removed? Can it be added back?
Otherwise, how can I target different target frameworks with a project (without juggling several .csproj files updated in parallel)?