practica 4.2 visual

namespace practica4._2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
int OP;
double Total;
OP = int.Parse(textBox1.Text);
int Cantidad= int.Parse(textBox2.Text);
Total = 0.0;
switch (OP)
{
case 1:
Total = Total + (Cantidad * 29.8);
break;
case 2:
Total = Total + (Cantidad * 45.00);
break;
case 3:
Total = Total + (Cantidad * 99.8);
break;
case 4:
Total = Total + (Cantidad * 44.9);
break;
case 5:
Total = Total + (Cantidad * 68.75);
break;
}


textBox3.Text = Total.ToString();


}

private void button2_Click(object sender, EventArgs e)
{
textBox1.Clear();
textBox2.Clear();
textBox3.Clear();
}

private void button3_Click(object sender, EventArgs e)
{
Close();
}


}
}