找到虚拟方法的原始实现

Question

我试图使用反射来确定派生类覆盖基类的哪些方法.确定方法是否未被重写是相当容易的,但是尝试确定方法是否在基类中被重写,或者只是在派生类中创建为虚拟是我想要完成的.

因此,如果A类具有虚拟方法Process和Export,而B类具有虚拟方法Process(重写)和Display(新虚拟方法),那么在检查B类时我希望得到以下结果;

• 方法被覆盖:过程
• 方法未重写:导出

我只想在检查派生自B类的类时处理Display方法.

Answer 1

是GetBaseDefinition你以后？

基本上

if (method.GetBaseDefinition() == method)
{
    // Method was declared in this class
}

这是一个显示您感兴趣的案例的示例:

using System;
using System.Reflection;

class Base
{
    public virtual void Overridden() {}
    public virtual void NotOverridden() {}
}

class Derived : Base
{
    public override void Overridden() {}
    public virtual void NewlyDeclared() {}
}

public class Test
{
    static void Main()
    {
        foreach (MethodInfo method in typeof(Derived).GetMethods())
        {
            Console.WriteLine("{0}: {1} {2} {3}",
                              method.Name,
                              method == method.GetBaseDefinition(),
                              method.DeclaringType,
                              method.GetBaseDefinition().DeclaringType);
        }
    }
}

输出:

Overridden: False Derived Base
NewlyDeclared: True Derived Derived
NotOverridden: False Base Base
ToString: False System.Object System.Object
Equals: False System.Object System.Object
GetHashCode: False System.Object System.Object
GetType: True System.Object System.Object