One of the nice language enhancements to C# in the latest release (7.0) is the ability to return multiple values from a function. Although one could use Tuples for this purpose, it is not an elegant or efficient approach. For more details, see this article.
By the way, returning multiple values from a function is not unique to C#. It is available in many languages. In an earlier article, I showed how Lisp supports this feature.
The following example shows how to use this feature in C#. I tried this in Visual Studio Professional 2017 RC (you have to add System.ValueTuple NuGet package to the current project to get this working.)
As you can see, returning multiple values from a function makes a lot of sense when the values are logically related.
Just for comparison, I am giving below the same functionality implemented in Lisp.
If you would like more details on this feature as supported in Lisp, take a look at this blog.
Have a great day!