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

        private void Response()
        {
            //String is a variable
            //All a variable does is store things, in this case a string(text)
            string Msg = "Hello World, look what I wrote. ";

            //A messagebox pops up a box
            //Msg is the variable that we created
            //textbox1.Text is whatever we write in the text box
            MessageBox.Show(Msg + textBox1.Text);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Response();
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            //If the key character is equal to enter
            if(e.KeyChar == (char)ConsoleKey.Enter)
            {
                //Go to Response
                Response();
            }
        }
    }