Example of using delegates in C#

Delegate.cs

using System;

namespace DelegateExample
{
	public class MyClass
	{
		delegate float MyDelegate(float input);
		MyDelegate DelegateFunction;
		
		public void Initialise(bool square)
		{
			if(square)
			{
				DelegateFunction = new MyDelegate(SquareFunction);
			}
			else
			{
				DelegateFunction = new MyDelegate(DoubleFunction);
			}
		}
		
		public float DoCalculation(float input)
		{
			return DelegateFunction(input);
		}
		
		float DoubleFunction(float input)
		{
			return input * 2.0f;
		}
		
		float SquareFunction(float input)
		{
			return input * input;
		}
	}

	public class MyTest
	{
		static void Main(string[] args)
		{
			MyClass myClass = new MyClass();
			myClass.Initialise(true);
			Console.WriteLine(string.Format("Result: {0}", myClass.DoCalculation(3.0f)));
			
		}
	}
}