Is there a better way to express a parameterless lambda than () =>?

Question

The () seems silly. is there a better way?

For example:

ExternalId.IfNotNullDo(() => ExternalId = ExternalId.Trim());

Answer 1

For a lambda, no: you need () =>

Is it for a delegate or an expression? For delegates, another option is delegate {...}. This may or may not be desirable, depending on the scenario. It is more keys, certainly...

In some cases (not this one) you can use a target method directly - i.e.

ExternalId.IfNotNullDo(SomeMethod);