C# Exercise Program - Prime Number Detection

Question: Write a C# program to find out if a given number is prime

This program takes a whole number as input and then tries to figure out if that number is prime or composite. It returns True if it is prime or else it will return False.
Solution:

using System;

namespace CosmicLearn
{
    public class CosmicExercise
    {
        public static bool IsPrime(int number)
        {
            for (int i = 2; i < number; i++)
            {
                if (number % i == 0)
                    return false;
            }
            return true;
        }
        public static void Main(String[] args)
        {
            Console.WriteLine("Is 11 prime? = " + IsPrime(11));
            Console.WriteLine("Is 10 prime? = " + IsPrime(10));
        }
    }
}