C#/VB.NET　Timerを使って一定時間ごとに処理を行う方法

using System;
using System.Timers;

class Program {
    static void Main(string[] args) {
        Timer timer = new Timer();
        timer.Interval = 1000; // 1秒ごとに処理を行う
        timer.Elapsed += Timer_Elapsed; // Elapsedイベントに処理を記述
        timer.Start(); // タイマーを開始
        Console.ReadLine(); // キー入力待ち
    }
    static void Timer_Elapsed(object sender, ElapsedEventArgs e) {
        Console.WriteLine("1秒経過");
    }
}

Imports System
Imports System.Timers

Class Program
    Shared Sub Main(ByVal args() As String)
        Dim timer As New Timer()
        timer.Interval = 1000 ' 1秒ごとに処理を行う
        AddHandler timer.Elapsed, AddressOf Timer_Elapsed ' Elapsedイベントに処理を記述
        timer.Start() ' タイマーを開始
        Console.ReadLine() ' キー入力待ち
    End Sub

    Shared Sub Timer_Elapsed(ByVal sender As Object, ByVal e As ElapsedEventArgs)
        Console.WriteLine("1秒経過")
    End Sub
End Class

        int cnt = 0;

        private void Form1_Load(object sender, EventArgs e)
        {
            label1.Text = cnt.ToString();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            cnt++;
            label1.Text = cnt.ToString();

        }

        private void button1_Click(object sender, EventArgs e)
        {
            timer1.Enabled = !timer1.Enabled;
        }

    Private cnt As Integer = 0
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load

        label1.Text = cnt.ToString()
    End Sub

    Private Sub timer1_Tick(sender As Object, e As EventArgs) Handles timer1.Tick
        cnt += 1
        label1.Text = cnt.ToString()
    End Sub

    Private Sub button1_Click(sender As Object, e As EventArgs) Handles button1.Click
        timer1.Enabled = Not timer1.Enabled
    End Sub