将 Class 成员设置为函数

Question

我有一个 class 仅通过反射与另一个 class 交互。我正在与之交互的这个 class 有一些委托，我正在尝试设置它们。它们的外观如下：

public class ClassThatIAmReflecting {
    public delegate void OnSuccessDelegate(bool value);

    public static OnSuccessDelegate OnSuccess;

    public void OnClassThatIAmReflectingSuccess(bool arg) {
        if(OnSuccess != null)
            OnSuccess(arg);
    }
}

这就是我正在尝试的：

public class MyClass {

    void Init() {
        Type type = Type.GetType("ClassThatIAmReflecting");

        FieldInfo fieldInfo = type.GetField("OnSuccess", BindingFlags.Public | BindingFlags.Static);
        fieldInfo.SetValue(null, HandleOnSuccess);
    }

    void HandleOnSuccess(bool value) {
        // do stuff ...
    }
}

我收到的错误是它无法将操作转换为对象。关于如何执行此操作的任何帮助？

Answer 1

您的 class 应该是：

public class MyClass
{

    public void Init()
    {
        Type type = typeof(ClassThatIAmReflecting);
        FieldInfo fieldInfo = type.GetField("OnSuccess", BindingFlags.Public | BindingFlags.Static);
        var fieldType = fieldInfo.FieldType;

        var methodInfo = this.GetType().GetMethod("HandleOnSuccess", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
        var del = Delegate.CreateDelegate(fieldType, this, methodInfo);

        fieldInfo.SetValue(null, del);

        //test
        ClassThatIAmReflecting.OnSuccess(true);
    }

    private void HandleOnSuccess(bool value)
    {
        Console.WriteLine("Called");
    }
}

将 Class 成员设置为函数

Set Class Member to Function

c#

reflection

system.reflection