c# - 反射:调用方法，传递委托(delegate)作为参数

Question

我在 Host 类中实现了一个接口(interface)，如下所示:

void Method1(Action<Args1> action1, Action<Args1> action2);

然后我为 action1 和 action2 传递以下方法。

private void Action1(Args1 obj)
{
//...
}

private void Action2(Args1 obj)
{
//...
}

使用反射，如何使用并传递方法 Action1 和 Action2 来调用它？

Answer 1

//here you pass the methods Action1 and Action2 as parameters
//to the delegates - if you need to construct these by reflection
//then you need to reflect the methods and use the
//Delegate.CreateDelegate method.
var param1 = new Action<Args1>(Action1);
var param2 = new Action<Args1>(Action2);
//instance of Host on which to execute
var hostInstance = new Host();
var method = typeof(Host).GetMethod("Method1", 
  BindingFlags.Public | BindingFlags.Instance);

method.Invoke(hostInstance, new object[] { param1, param2 });