C# 7.0 – Tuples
Tuples are not completely new in C# 7.0. In .NET Framework 4.0, a set of Tuple classes has been introduced in the System.Tuple namespace. If you want to return more than one value from a method then you need to use Tuples. Besides, in the programming world, it is a very common thing to return multiple values from a method. Tuples in C# 7.0 provides a better mechanism to return multiple values from a method.
read more »