using System; namespace Parity { class Program { static void Main(string[] args) { int number = 10; // even number if (Parity.IsEven(number)) { Console.WriteLine(number + " is even"); } else { Console.WriteLine(number + " is odd"); } } } }In this example, we use the `IsEven` method to determine whether the integer `number` is even or odd. The package library for C# Parity is likely to be a custom library created by a developer or a small open-source project that provides basic functionality for determining parity.