Head First C# Code: Chapter 4
Mileage Calculator
Form1.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace ____Mileage_Calculator
{
public partial class Form1 : Form
{
int startingMileage;
int endingMileage;
double milesTraveled;
double reimburseRate = .39;
double amountOwed;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
startingMileage = (int)numericUpDown1.Value;
endingMileage = (int)numericUpDown2.Value;
if (startingMileage <= endingMileage)
{
milesTraveled = endingMileage -= startingMileage;
amountOwed = milesTraveled *= reimburseRate;
label4.Text = "$" + amountOwed;
}
else
{
MessageBox.Show("The starting mileage number must be less than the ending mileage number",
"Cannot Calculate Mileage");
}
}
private void button2_Click(object sender, EventArgs e)
{
MessageBox.Show(milesTraveled + " miles", "Miles Traveled");
}
}
}
