Question

Reading this article I found several ways to call a method.

Method to call:

public static void SendData(string value) { }

Calls:

delegate void MyDelegate(string value);

//Slow method - NOT RECOMMENDED IN PRODUCTION!        
SendData("Update");

// Fast method - STRONGLY RECOMMENDED FOR PRODUCTION!
MyDelegate d = new MyDelegate(SendData);
d.BeginInvoke("Update", null, null);

Is it true? Is it faster?

Action send = () => Send("Update");
send();

Or maybe this?

I need to call a method into a SQL CLR trigger with maximum performance so even small speed increase makes sense.

Answer 1

Which is “faster”?

1) Ask Bob to mow your lawn. Wait until he’s done. Then go to the mall.

2) Ask Bob to mow your lawn. Go to the mall while he’s mowing your lawn.

The second technique gets you to the mall a lot faster. The price you pay is that you have no idea whether the lawn is going to be mowed by the time you get home or not. With the first technique, you know that when you get home from the mall the lawn will be mowed because you waited until it was before you left in the first place. If your logic depends on knowing that the lawn is mowed by the time you get back then the second technique is wrong.

Now the important bit: Obviously neither technique gets your lawn mowed faster than the other. When you’re asking “which is faster?” you have to indicate what operation you’re measuring the speed of.