Most efficent way of joining strings

Question

I need to concatenate a lot of strings alltogether and put a comma between any of them. I have a list of strings

\"123123123213\"
\"1232113213213\"
\"1232131         


        

Answer 1

You should use string.Join() because:

a) it's much more readable, maintainable and easy on the eyes.

b) it uses a StringBuilder internally already, so it's very efficient ( you can confirm yourself using Reflector).

Edit:

string.Join() uses a StringBuilder for the general case of an IEnumerable input. If you already have an array on the other hand it uses some voodoo magic (including FastAllocateString() and UnSafeCharBuffer) to be even faster.