Is there any overhead in the use of anonymous methods?

Question

I would like to know if there is any overhead incurred through the use of anonymous methods when creating a Background worker.

for example:

public void S         


        

Answer 1

Whenever an anonymous method (incl lambdas) close over variables the compiler creates a class to hold these variables for you. Whenever the delegate is created a new instance of this class is too. This obviously adds extra work for the runtime, but is generally negligible in most situations.