private void btn1_addItem_Click(object sender, EventArgs e)
        {
            
            try
            {
                //Adding a new item to the data grid view
                Product item = new Product();
                item.prodID = textBox1_ID.Text;
                item.title = textBox2_title.Text;
                item.genre = textBox3_genre.Text;
                item.releaseDate = textBox4_releaseDate.Text;
                item.price = double.Parse(textBox5_price.Text);
                item.stockQnty = int.Parse(textBox6_stockQnty.Text);
                IM.addItem(item);
                dataGridView_inventory.DataSource = IM.getItemList();

                //Writing to file
                StreamWriter outFile = new StreamWriter("inventoryTextFile.txt", true);
                for (int i = 0; i < 1; i++)
                {
                    outFile.WriteLine(item.prodID + ", " + item.title + ", " + item.genre + ", " + item.releaseDate
                            + ", " + item.price + ", " + item.stockQnty);
                }
                outFile.Flush();
                outFile.Close();

                //Text boxes are ready for user to type more info into them
                textBox1_ID.Text = "";
                textBox2_title.Text = "";
                textBox3_genre.Text = "";
                textBox4_releaseDate.Text = "";
                textBox5_price.Text = "";
                textBox6_stockQnty.Text = "";
            }
            catch(Exception ex)
            {
                MessageBox.Show("Please make sure you fill out the text boxes with the appropriate information.");
            }
        }