c# - 将 MethodInfo 连接到委托(delegate)字段 (FieldInfo)

Question

简单案例:

public class MyClass
{
  public Action<double> MyAction;
}

public class AnotherClass
{
  public void MyAction(double value)
  {
    // ...
  }
}

当我通过反射获得 AnotherClass.MyAction(..) 方法和 MyClass.MyAction 委托(delegate)时，我最终得到了一对 MethodInfo/FieldInfo 类，其中我无法将方法连接到委托(delegate)。此外，我从字符串中获取了方法/委托(delegate)名称，我无法在没有反射的情况下访问实例字段/方法。谁能帮我解决这个问题，或者这种联系是否可行？

Answer 1

您应该查看 Delegate.CreateDelegate，特别是:

MethodInfo method = typeof(AnotherClass).GetMethod("MyAction");
FieldInfo field = typeof(MyClass).GetField("MyAction");


AnotherClass obj = // the object you want to bind to

Delegate action = Delegate.CreateDelegate(field.FieldType, obj, method);

MyClass obj2 = // the object you want to store the delegate in

field.SetValue(obj2, action);