Is there a class existing in .NET Framework 3.5 that would be equivalent to the .NET 4 Tuple?
I would like to use it in order to return several values from a method,
You can install NetLegacySupport.Tuple via nuget. This is the Tuple class from .Net 4.5 backported to .Net 2.0 and 3.5.
NetLegacySupport.Tuple
You can install this via the package manager in Visual Studio or using nuget on the commandline.
Here is the nuget package:
https://www.nuget.org/packages/NetLegacySupport.Tuple