AttributeTargetElements = MulticastTargets.Method 不受尊重？

Question

我应用了这个方面：

[Serializable]
[MulticastAttributeUsage(MulticastTargets.Method)] // regular methods, excluding ctors!
public class WmiClassMethodAspect : OnMethodBoundaryAspect
{
    public WmiClassMethodAspect() { ApplyToStateMachine = false; } // PostSharp Express edition...

    public override void OnEntry(MethodExecutionArgs args)
    {
        //base.OnEntry(args);
    }

    public override void OnExit(MethodExecutionArgs args)
    {
        //base.OnExit(args);
    }
}

在某些namespace的班级：

[assembly: WmiClassMethodAspect(AttributeTargetTypes = "OperatingSystemsWmi.*", 
    AttributePriority = 10, ApplyToStateMachine = false, 
    AttributeTargetElements = MulticastTargets.Method)]

但如果它不遵守AttributeTargetElements 设置：它也会输入WmiClassMethodAspect.OnEntry 和WmiClassMethodAspect.OnExit 作为属性（例如set_MyProperty 和get_MyProperty）

Answer 1

发生这种情况是因为 MulticastTargets.Method 将属性访问器视为方法（它们就是）。请注意，MulticastTarget.Property 指定属性（方法组）的目的是为了例如LocationLevelAspect.

要产生预期的行为，您需要根据其名称为属性 getter 和 setter 添加排除项：

[assembly: WmiClassMethodAspect(AttributeTargetTypes = "OperatingSystemsWmi.*", 
           AttributePriority = 10, AttributeTargetElements = MulticastTargets.Method, 
           AttributeTargetMembers = "get_*", AttributeExclude = true)]

[assembly: WmiClassMethodAspect(AttributeTargetTypes = "OperatingSystemsWmi.*", 
           AttributePriority = 10, ApplyToStateMachine = false, AttributeTargetElements = MulticastTargets.Method, 
           AttributeTargetMembers = "set_*", AttributeExclude = true)]

编辑： 如果你想在一个属性中使用这个，你可以使用正则表达式：

[assembly: WmiClassMethodAspect(AttributeTargetTypes = "OperatingSystemsWmi.*", 
           AttributePriority = 10, ApplyToStateMachine = false, 
           AttributeTargetElements = MulticastTargets.Method,
           AttributeTargetMembers = "regex:^(?!get_|set_).+")]

这可能是最简洁的解决方案了。