Tuples is another good feature of .NET framework 4.0
The .NET Framework 4 provides the System.Tuple class for creating tuple objects that contain structured data.
The .NET Framework directly supports tuples with one to seven elements. In addition, you can create tuples of eight or more elements by nesting tuple objects in the Restproperty of a Tuple System.Tuple<T1, T2, T3, T4, T5, T6, T7, TRest> object.
Tuples are useful in the following ways: