接口上的属性

methodBase将是类的方法,而不是接口.您需要在界面上查找相同的方法.在C#中,这有点简单(因为它必须像命名一样),但你需要考虑显式实现之类的东西.如果你有VB代码,那将会比较棘手,因为VB方法"Foo"可以实现一个接口方法"Bar".为此,您需要调查接口映射:

using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Reflection;
interface IFoo
{
    void AAA(); // just to push Bar to index 1
    [Description("abc")]
    void Bar();
}
class Foo : IFoo
{
    public void AAA() { } // just to satisfy interface
    static void Main()
    {
        IFoo foo = new Foo();
        foo.Bar();
    }
    void IFoo.Bar()
    {
        GetAttribute();
    }

    void GetAttribute()
    { // simplified just to obtain the [Description]

        StackTrace stackTrace = new StackTrace();
        StackFrame stackFrame = stackTrace.GetFrame(1);
        MethodBase classMethod = stackFrame.GetMethod();
        InterfaceMapping map = GetType().GetInterfaceMap(typeof(IFoo));
        int index = Array.IndexOf(map.TargetMethods, classMethod);
        MethodBase iMethod = map.InterfaceMethods[index];
        string desc = ((DescriptionAttribute)Attribute.GetCustomAttribute(iMethod, typeof(DescriptionAttribute))).Description;
    }
}