I need help debugging this. Can someone help me with this?

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 FixedDebugThree4
public partial class Form1 : Form
public Form1()

private void calculateButton_Click(object sender, EventArgs e)
int birth;
int year;
int age;
birth = Convert.ToInt32(textBox1.Text);
year = Convert.ToInt32(textBox2.Text);
age = year - birth;
outputLabel.Text = "On your birthday this year, \nyou were or will be " +
"{0} years old", age;