PART 1: I am to create a program that that reads a file’s contents into an array, and displays the array’s contents in a ListBox control, and calculates and displays the total of the array’s values. - DONE THAT PART

PART 2: Calculate the average, Highest, and Lowest value and display them in a Label control. 

I'm new to coding so I couldn't do much, I turn to stack overflow for help

```
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace SalesAnalysis
{
public partial class SalesAnalysisApplication : Form
{
    public SalesAnalysisApplication()
    {
        InitializeComponent();
    }

    private void salesAnalysisButton_Click(object sender, EventArgs e)
    {
        //declaring array
        const int SIZE = 100;
        decimal[] sales = new decimal[SIZE];

        //varible to hold amount stored in array
        int count = 0;

        //declaring streamreader
        StreamReader inputFile;

        //opening the sales file
        inputFile = File.OpenText("Sales.txt");

        try
        {
            //pull contents from file into array while there is still 
             // items to pull and the array isnt full

            while (!inputFile.EndOfStream && count < sales.Length)
            {
                sales[count] = decimal.Parse(inputFile.ReadLine());
                count++;
            }
            //close the file
            inputFile.Close();

            //display contents in listbox
            for (int index = 0; index < count; index++)
            {
                salesListBox.Items.Add(sales[index]);
            }

            //Calculate the sum of all values
            for (int index = 0; index < sales.Length; index++)
            {
                totalSales += sales[index];
            }
            //display total of all values
            salesListBox.Items.Add("Total =" + totalSales);

            //Determine the average sales from the array
            for (int index = 0; index < sales.Length; index++)
            {
                //calculate the average
                averageSales = totalSales / 7;
            }

        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

    private void Clear_Click(object sender, EventArgs e)
    {
        //Clear all fields
        salesListBox.Items.Clear();
        averageResultsLabel.Text = "";
        highestResultsLabel.Text = "";
        lowestResultsLabel.Text = "";
    }

    private void exitButton_Click(object sender, EventArgs e)
    {
        //close form
        this.Close();
    }
}

```

}