how can i store and reuse pieces of my lambda expressions

Question

I have a block of code where a piece of the lambda expression is used again and again. How can store this logic so that i can reuse this expression piece?

Eg: lets take

Answer 1

Func func = (map => ((((map.User.Key ==_users.PublicUser.Key || map.User.Key == _users.CurrentUser.Key) && map.AccessLevel.ToAccessLevel() == AccessLevel.Read)).Count() > 0));

EDIT:

you could try something like this.

class MyClass{

 Func func = null;

 MyClass()
 {
    func = (map => ((((map.User.Key ==_users.PublicUser.Key || map.User.Key == _users.CurrentUser.Key) && map.AccessLevel.ToAccessLevel() == AccessLevel.Read)).Count() > 0));
  }
  ...
  ...
}