C#のプログラムの基本構造

using System;
 
class Program
{
    static void Main(string[] args)
    {
        // 初めてC#を学ぶ方々にご挨拶
        Console.WriteLine("皆様、はじめまして");
    }
}

Module Program
 
    Sub Main()
        ' 初めてVisual Basicを学ぶ方々にご挨拶
        Console.WriteLine(("皆様、はじめまして")
    End Sub
 
End Module

// 初めてF#を学ぶ方々にご挨拶
open System
Console.Write "皆様、はじめまして"

#include "stdafx.h"
 
using namespace System;
 
int main(array<System::String ^> ^args)
{
  // 初めてC++/CLIを学ぶ方々にご挨拶
    Console::WriteLine(L"皆様、はじめまして");
    return 0;
}

using System;
using System.Windows;
using System.Windows.Controls;

public class Program
{
    [STAThread]
    static void Main()
    {
        var button = new Button { Content = "ここを押せ" };
        button.Click += (sender, e) => MessageBox.Show("ようこそ");

        var win = new Window
        {
            Title = "サンプルプログラム",
            Width = 300,
            Height = 200,
            Content = button,
        };

        var app = new Application();
        app.Run(win);
    }
}

Module VBSample

    Sub Main()
        Dim button = New Button With {.Content = "ここを押せ"}
        AddHandler button.Click, Function(sender, args) {MessageBox.Show("ようこそ")}

        Dim win = New Window With
                  {
                      .Title = "サンプルプログラム",
                      .Width = 300,
                      .Height = 200,
                      .Content = button
                  }

        Dim app = New Application()
        app.Run(win)
    End Sub

End Module

open System
open System.Windows
open System.Windows.Controls
 
let button = new Button(Content = "ここを押せ")
button.Click.Add(fun x -> MessageBox.Show("ようこそ") |> ignore)

let win = new Window(
                     Title = "サンプルプログラム",
                     Width = 300.0,
                     Height = 200.0,
                     Content = button)

[<STAThread>]
do
    let app = new Application()
    app.Run(win) |> ignore