How do I rewrite a Command using explicit functions?

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Hi,

I am trying to get my head around ICommand. I've done a lot of reading. Almost all of it shows the mechanics of the Command being specified using lambda syntax. I can see the value of that, but, simply to deepen my understanding, I would like to know how to write the code long-hand, using separate functions.

If I have this Command constructor:

C#

ICommand myCommand = new Command(
async ( o ) =>
{
	await Task.Delay( 3000 );
},
( o ) =>
{
	return true;
} );

How would I rewrite this using explicit functions in place of the two lambda expressions?

Kind wishes ~ Patrick

Posted 19-Jan-16 22:53pm

Patrick Skelton

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Richard Deeming · Accepted Answer · 2016-01-20T02:11:00

Solution 1

Seems simple enough:

C#

private bool MyCommandCanExecute(object state)
{
    return true;
}

private void MyCommandExecute(object state)
{
    // Do something...
}

...

ICommand myCommand = new Command(MyCommandExecute, MyCommandCanExecute);

Posted 20-Jan-16 2:11am

Richard Deeming

Comments

Patrick Skelton 20-Jan-16 10:06am

Now I see it, you are right - it seems dead simple. The compiler message was throwing me off, I think - something about not being able to cast to an Action<T>.

Thank you.