Is there a way to specify an "empty" C# lambda expression?

user_18505 0
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I'd like to declare an "empty" lambda expression that does, well, nothing. Is there a way to do something like this without needing the DoNothing() method?

public MyViewModel()
{
    SomeMenuCommand = new RelayCommand(
            x => DoNothing(),
            x => CanSomeMenuCommandExecute());
}

private void DoNothing()
{
}

private bool CanSomeMenuCommandExecute()
{
    // this depends on my mood
}

My intent in doing this is only control the enabled/disabled state of my WPF command, but that's an aside. Maybe it's just too early in the morning for me, but I imagine there must be a way to just declare the x => DoNothing() lambda expression in some way like this to accomplish the same thing:

SomeMenuCommand = new RelayCommand(
    x => (),
    x => CanSomeMenuCommandExecute());

Is there some way to do this? It just seems unnecessary to need a do-nothing method.

lambda c#
6 Answers
Action DoNothing = delegate { };
Action DoNothing2 = () => {};

I used to initialize Events to a do nothing action so it was not null and if it was called without subscription it would default to the 'do nothing function' instead of a null-pointer exception.

public event EventHandler<MyHandlerInfo> MyHandlerInfo = delegate { };
user_20750910
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