从Action委托获取方法名称

Question

我正在尝试将方法名称传递给Action委托.这就是我所拥有的:

private static void DoAction(params Action<Group>[] actions)
{
    foreach (Action<Group> action in actions)
    {
        Console.WriteLine(action.Method.Name);
    }
}

在主要情况下,这就是它被调用的方式:

DoAction(y => y.DoBar(), z => z.DoFoo());

在执行DoAction()方法之后,我希望在屏幕上看到"DoFoo"和"DoBar",但我看到< Main>b__0和<Main>b__1.我只是想知道是否有办法从动作委托中获取目标方法的实际名称？任何帮助表示赞赏.

Answer 1

您可以将输入类型更改为a Expression,然后查看表达式是否为方法调用:

private static void DoAction(params Expression<Action<Group>>[] actions)
{
    foreach (var exp in actions)
    {
        var method = exp.Body as MethodCallExpression;
        if(method != null)
            Console.WriteLine(method.Method.Name);

        // similar method for properties
        var member = exp.Body as MemberExpression;
        if (member != null)
            Console.WriteLine(member.Member);

        // execute the Action
        Action<Group> act = exp.Compile();

        Group g = new Group();  // create a Group to act on
        act(g);  // perform the action

    }

}