ASDV-C-Sharp/MP3/RandomNumberFileWriterTwo_CalebFontenot/RandomNumberFileWriterTwo_CalebFontenot/Form1.cs

namespace RandomNumberFileWriterTwo_CalebFontenot
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

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

        private void openButton_Click(object sender, EventArgs e)
        {
            // Define variables
            int randomNumberSum = 0, randomNumberCount = 0, inputNumber;

            // Create StreamReader
            StreamReader inputFile = null;

            // Summon the OpenFile Dialog for selecting the text file to read from.
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                // Open the user selected file.
                inputFile = File.OpenText(openFileDialog1.FileName);

                // Clear the list box, just in case this isn't the first time this fuction has run.
                numberOutputListBox.Items.Clear();

                // Read from the text file
                while (!inputFile.EndOfStream)
                {
                    try
                    {
                        inputNumber = int.Parse(inputFile.ReadLine());
                    }
                    catch
                    {
                        MessageBox.Show("Error interpreting contents of text file. Are you sure you selected the right file?");
                        break;
                    }
                        numberOutputListBox.Items.Add(inputNumber);
                        randomNumberSum += inputNumber;
                        randomNumberCount++;
                }
                // Write randomNumberSum and randomNumberCount to the appropriate labels.
                numberSumLabel.Text = randomNumberSum.ToString();
                numberCountLabel.Text = randomNumberCount.ToString();
            }

        }
    }
}