Hello World

C#

using System;

class Program
{
 static void Main()
 {
  Console.WriteLine("Hello, World!");
 }
}

csc.exe /nologo Program.cs

C:\Program Files (x86)\Microsoft Visual Studio 14.0>where csc.exe
C:\Program Files (x86)\MSBuild\14.0\Bin\csc.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe

ildasm.exe Program.exe