如何使用显式函数重写命令？ [英] How do I rewrite a Command using explicit functions?

问题描述

我试图理解 ICommand 。我做了很多阅读。几乎所有这些都显示使用lambda语法指定 Command 的机制。我可以看到它的价值，但是，为了加深我的理解，我想知道如何使用单独的函数来编写代码。



如果我有这个Command构造函数：

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:

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

如何使用显式函数代替两个lambda表达式重写它？



亲切的愿望~Patrick

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

Kind wishes ~ Patrick

推荐答案

看似简单：

Seems simple enough:

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

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

...

ICommand myCommand = new Command(MyCommandExecute, MyCommandCanExecute);

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