Нарисовать луну (месяц) без заливки

MessageBox.Show(textBox1.Text + textBox2.Text + textBox3.Text);
 
//Или так?
MessageBox.Show(Convert.ToString(textBox1.Text.Length + textBox2.Text.Length + textBox3.Text.Length));

using System;
using System.Drawing;
using System.Windows.Forms;
 
namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        Graphics g;
        Pen pen = new Pen(Color.Black, 5);
        Random rand = new Random();
 
 
        public Form1()
        {
            InitializeComponent();
            g = this.CreateGraphics();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            timer1.Enabled = !timer1.Enabled;
        }
 
        private void timer1_Tick(object sender, EventArgs e)
        {
            g.DrawLine(pen, new Point(rand.Next(0, this.Width), rand.Next(0, this.Height - (this.Height - button1.Location.Y))), new Point(rand.Next(0, this.Width), rand.Next(0, this.Height - (this.Height - button1.Location.Y))));
        }
    }
}

using System;
using System.Drawing;
using System.Windows.Forms;
 
namespace Moon
{
    public partial class Form1 : Form
    {
        Graphics g;
        Pen pen = new Pen(Color.Black, 5);
 
        public Form1()
        {
            InitializeComponent();
            g = this.CreateGraphics();
        }
 
 
        private void button1_Click(object sender, EventArgs e)
        {
            g.DrawArc(pen, 50, 50, 75, 80, 90, 180);
            g.DrawArc(pen, 80, 50, 20, 80, 90, 180);
        }
    }
}