Test to determine if there is a performance impact calling a method passed as an Action instead of directly. To be run in LinqPad (as a C# Program)

Timing Using Action vs Direct - C#

void Main()
{
	RunDirectly();
	RunIndirectly();
	var runs = 1000000;

	var sw = new Stopwatch();

	sw.Start();
	for (int i = 0; i < runs; i++)
	{
		RunDirectly();
	}
	sw.Stop();
	Console.ForegroundColor = ConsoleColor.Green;
	Console.WriteLine($"{runs} Direct Executions: {sw.ElapsedMilliseconds}");

	sw.Reset();

	sw.Start();
	for (int i = 0; i < runs; i++)
	{
		RunIndirectly();
	}
	sw.Stop();
	Console.ForegroundColor = ConsoleColor.Blue;
	Console.WriteLine($"{runs} Indirect Executions: {sw.ElapsedMilliseconds}");

	sw.Reset();

	sw.Start();
	for (int i = 0; i < runs; i++)
	{
		RunIndirectly();
	}
	sw.Stop();
	Console.ForegroundColor = ConsoleColor.Blue;
	Console.WriteLine($"{runs} Indirect Executions: {sw.ElapsedMilliseconds}");

	sw.Reset();

	sw.Start();
	for (int i = 0; i < runs; i++)
	{
		RunDirectly();
	}
	sw.Stop();
	Console.ForegroundColor = ConsoleColor.Green;
	Console.WriteLine($"{runs} Direct Executions: {sw.ElapsedMilliseconds}");

	sw.Reset();

	sw.Start();
	for (int i = 0; i < runs; i++)
	{
		RunDirectly();
	}
	sw.Stop();
	Console.ForegroundColor = ConsoleColor.Green;
	Console.WriteLine($"{runs} Direct Executions: {sw.ElapsedMilliseconds}");

	sw.Reset();

	sw.Start();
	for (int i = 0; i < runs; i++)
	{
		RunIndirectly();
	}
	sw.Stop();
	Console.ForegroundColor = ConsoleColor.Blue;
	Console.WriteLine($"{runs} Indirect Executions: {sw.ElapsedMilliseconds}");

	sw.Reset();

	sw.Start();
	for (int i = 0; i < runs; i++)
	{
		RunIndirectly();
	}
	sw.Stop();
	Console.ForegroundColor = ConsoleColor.Blue;
	Console.WriteLine($"{runs} Indirect Executions: {sw.ElapsedMilliseconds}");

	sw.Reset();

	sw.Start();
	for (int i = 0; i < runs; i++)
	{
		RunDirectly();
	}
	sw.Stop();
	Console.ForegroundColor = ConsoleColor.Green;
	Console.WriteLine($"{runs} Direct Executions: {sw.ElapsedMilliseconds}");

	sw.Reset();

}

int count = 0;

private void RunDirectly()
{
	count++;
}

private void RunIndirectly()
{
	Action m = () => { count++; };
	m();
}

I'm getting this as an example:

1000000 Direct Executions: 6
1000000 Indirect Executions: 24
1000000 Indirect Executions: 27
1000000 Direct Executions: 5
1000000 Direct Executions: 5
1000000 Indirect Executions: 30
1000000 Indirect Executions: 26
1000000 Direct Executions: 3

About 3-5 time slower or 20ish ms / 1,000,000, or .00002 ms per call. I think I can handle that ;)