---make.bat---
@echo off
for /f "usebackq" %%d in (`dir/w %WINDIR%\Microsoft.NET\Framework ^| findstr [v`) do set dotnetdir=%%d
set dotnetdir=%dotnetdir:[=%
set dotnetdir=%dotnetdir:]=%
rem echo %dotnetdir%
set CSCOMPILER=%windir%\Microsoft.NET\Framework\%dotnetdir%\csc.exe

%CSCOMPILER% /target:winexe /main:App /platform:anycpu /out:skeleton.exe Main.cs Form1.cs
pause
---end make.bat---

---Main.cs---
using System;
using System.Windows.Forms;


class App
{
	[STAThread]
	static void Main()
	{
                Application.EnableVisualStyles();
                Application.Run(new Form1());
        }
}
---end Main.cs---

---Form1.cs---
using System;
using System.Windows.Forms;


class Form1 : Form
{
	static Button Button1;

	public Form1()
	{
		Button1 = new Button();
                Button1.Top = 10;
                Button1.Left = 10;
                Button1.Text = "hello";
		Button1.Click += new EventHandler(Button1_Click);
		this.Controls.Add(Button1);
	}

	private void Button1_Click(object sender, System.EventArgs e)
	{
		MessageBox.Show("hello");
	}
}
---end Form1.cs---