LazyValues.cs

void Main()
{
	var name = new LazyValue<string>(LoadName); // Technically you don't even need the generic specification here but I'm being verbose
	
	Console.WriteLine(name.Value);
}

private static string LoadName()
{
	return "Pete Smith";
}

public class LazyValue<T>
{
	private readonly Func<T> loadFunction;
	private bool loaded;
	private T loadedValue;
	
	public LazyValue(Func<T> loadFunction)
	{
		this.loadFunction = loadFunction;
	}
	
	public T Value
	{
		get
		{
			if (!loaded)
			{
				loadedValue = loadFunction();
				loaded = true;
			}
			
			return loadedValue;
		}
	}
}