using System; using System.Diagnostics; public class TestClass { public void Method1() { Console.WriteLine("Hello from Method1!"); } [Conditional("DEBUG")] public void Method2() { Console.WriteLine("Hello from Method2!"); } public void Method3() { Console.WriteLine("Hello from Method3!"); } } class MainClass { public static void Main() { TestClass MyTestClass = new TestClass(); MyTestClass.Method1(); MyTestClass.Method2(); MyTestClass.Method3(); } }