private void btn_Ejecutar_Click(object sender, EventArgs e)
{
Graphics Papel;
Papel = pictureBox1.CreateGraphics();
Pen lapiz = new Pen(Color.Black);
for (int i = 0; i < pictureBox1.Width / 2; i = i + 5)
{
Papel.DrawLine(lapiz, 0, 0 + i, 0 + i, pictureBox1.Height / 2);
}
for (int j = 0; j < pictureBox1.Height / 2; j = j + 5)
{
Papel.DrawLine(lapiz, (pictureBox1.Width - j) / 2, (pictureBox1.Height) / 2, 0, (pictureBox1.Height - j) / 2);
}
}
