Sort an array

Hi, how do you sort an array from the smallest number to the largest number?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            //declaring and intilizing variable
            string myName = "";
            int temp1 = 0;
            float sum = 0;
            double sumSqr = 0;
            float average = (sum / 5);
            double variance = 0;

            //prompting the user for input.
            Console.WriteLine("What is your name?");
            myName = Console.ReadLine();

            Console.WriteLine("Please enter a number between 10 and 50 five times: ");
            int[] array1 = new int[5];
            for (int i = 0; i < 5; i++)
            {

                temp1 = int.Parse(Console.ReadLine());


                if (temp1 >= 10 && temp1 <= 50)
                {
                    array1[i] = temp1;

                }
                else
                {
                    Console.WriteLine("Your number is not between 10 and 50!\nPlease enter a number between 10 and 50: ");
                    i--;
                }
            }
            for (int i = 0; i < 5; i++)
            {
                sum += array1[i];
            }
            average = sum / 5;
            {
                for (int i = 0; i < 5; i++)
                {
                    sumSqr += Math.Pow((array1[i] - average), 2);

                }


                variance = sumSqr / 4;
            }
            Console.WriteLine("Average is {0}. ", average);
            Console.WriteLine("Variance is {0}. ", variance);
            Console.ReadKey();



        }
    }
}