no es mucho codigo pero es lo que tengo [hide] public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { } private void pictureBox1_Click(object sender, EventArgs e) { listadecompra.Items.Add("Ensalada 1"); } private void pictureBox2_Click(object sender, EventArgs e) { listadecompra.Items.Add("Ensalada 2"); } private void pictureBox3_Click(object sender, EventArgs e) { listadecompra.Items.Add("Ensalada 3"); } private void pictureBox4_Click(object sender, EventArgs e) { listadecompra.Items.Add("Plato Principal 1"); } private void pictureBox5_Click(object sender, EventArgs e) { listadecompra.Items.Add("Plato Principal 2"); } private void pictureBox6_Click(object sender, EventArgs e) { listadecompra.Items.Add("Plato Principal 3"); } private void pictureBox7_Click(object sender, EventArgs e) { listadecompra.Items.Add("Postre 1"); } private void pictureBox8_Click(object sender, EventArgs e) { listadecompra.Items.Add("Postre 2"); } private void pictureBox9_Click(object sender, EventArgs e) { listadecompra.Items.Add("Postre 3"); } private void pictureBox10_Click(object sender, EventArgs e) { listadecompra.Items.Add("Bebida 1"); } private void pictureBox11_Click(object sender, EventArgs e) { listadecompra.Items.Add("Bebida 2"); } private void pictureBox12_Click(object sender, EventArgs e) { listadecompra.Items.Add("Bebida 3"); } private void button3_Click(object sender, EventArgs e) { Close(); } private void Subtotal_TextChanged(object sender, EventArgs e) { } private void listadecompra_SelectedIndexChanged(object sender, EventArgs e) { listadecompra.Items.Remove(listadecompra.SelectedItem); } private void button2_Click(object sender, EventArgs e) { listadecompra.Items.Clear(); } private void button1_Click(object sender, EventArgs e) { double num1, num2, total; num1 = Convert.ToDouble(Subtotal.Text); num2 = Convert.ToDouble(IVA.Text); total = num2 + num1; } private void IVA_TextChanged(object sender, EventArgs e) { int a = Convert.ToInt32(this.IVA.Text); int porcentaje = (a * 19) / 100; } } } [/hide]