// Event for when the Add Shoe button is clicked
        private void addShoeButton_Click(object sender, EventArgs e)
        {
            try
            {
                // Creates a new object tempShoe that will hold all the properties the user has input
                shoe tempShoe = new shoe();

                // Throws an exception if any of the text boxes in the panel are left blank by the user
                if (addBrandTextbox.Text == "" || addModelTextbox.Text == "" || addColorTextbox.Text == "")
                {
                    throw new ArgumentNullException();
                }

                // Sets the tempShoe object properties to the values the user has input
                tempShoe.Brand = addBrandTextbox.Text;
                tempShoe.Model = addModelTextbox.Text;
                tempShoe.Color = addColorTextbox.Text;

                // Adds the tempShoe to the currrent list
                shoeList.Add(tempShoe);

                // Updates the label on the panel to alert the user which shoe they have added
                addedShoeLabel.Text = ("Added " + tempShoe.Brand + " " + tempShoe.Model + " " + tempShoe.Color);

                // Resets the fields on the panel
                addBrandTextbox.Text = null;
                addModelTextbox.Text = null;
                addColorTextbox.Text = null;
                addBrandTextbox.Focus();
            }
            catch
            {
                MessageBox.Show("Please fill out all the required information");
            }
        }
        // Event for when the Import Collection button on the Main Menu Group Box is clicked
        private void importCollectionButton_Click(object sender, EventArgs e)
        {
            try
            {
                // Clears the current shoe list to make room for the list being imported
                shoeList.Clear();

                // Creates a new OpenFileDialog object named openCollection
                OpenFileDialog openCollection = new OpenFileDialog();
                openCollection.FileName = "DefaultOutput.txt";
                openCollection.Filter   = "Text File | *.txt";

                if (openCollection.ShowDialog() == DialogResult.OK)
                {
                    // Creates a StreamReader object called inputFile
                    // Also declared inputLine variable (to hold the entire line)
                    //  and shoeComponents array (to hold each individual shoe component from inputLine)
                    StreamReader inputFile = new StreamReader(openCollection.OpenFile());
                    string       inputLine;
                    string[]     shoeComponents;


                    // Reads the inputFile until the end
                    while (!inputFile.EndOfStream)
                    {
                        // Creates new shoe object called tempShoe to hold the current shoe being input
                        shoe tempShoe = new shoe();

                        // Sets inputLine = to the shoe on the line being read
                        //  shoeComponents = the individual components of the shoes
                        inputLine      = inputFile.ReadLine();
                        shoeComponents = inputLine.Split('|');

                        tempShoe.Brand = shoeComponents[0];
                        tempShoe.Model = shoeComponents[1];
                        tempShoe.Color = shoeComponents[2];

                        // Adds tempShoe to the current list
                        shoeList.Add(tempShoe);
                    }

                    // Disposes and closes inputFile
                    inputFile.Dispose();
                    inputFile.Close();
                }

                // Makes the Main Menu GroupBox invisible, calls printList function, makes the Edit Menu Panel visible
                mainMenuBox.Visible = false;
                printList();
                editMenuPanel.Visible = true;
            }

            catch
            {
                MessageBox.Show("Error");
            }
        }