如何在属性中使用反射来检索有关调用它的类的信息(How to use reflection inside an attribute to retrieve information about the class that called it)

 我遇到以下问题， 
 
 我得到了一个'Car'类，该函数使用EntityFramework访问数据库，并通过几个过滤器获取所有表格行。 
 
 像这样的东西： 
 
public class car
{
     private const string VEHICLE_TYPE = "something_here";
    [CachedAttribute(30)]
    public virtual List<Vehicles> GetVehiclesFromDB()
    {
        return _repository.Set<Vehicles>().Where(e => e.VehicleType == VEHICLE_TYPE && e.Weight < CAR_MAX_WEIGHT);
    }
}
 
 我还在其上添加了一个属性。 在这个属性里我需要能够检索一些东西， 
 
 我需要获取类名（本例中是car），我还需要获取函数返回值的类型（在本例中为对象Vehicles），并且需要在VEHICLE_TYPE中获取值。 
 
 之后，我需要能够从属性内执行该功能（'GetVehiclesFromDB'） 
 
public class CachedAttribute : Attribute
{
    public CachedAttribute(int seconds)
    {

      // todo
    }
}
 
 我从来没有做过这样的事情，我不知道我应该采取什么样的方法。 这是一种反思吗？ 或者它可能完全不同？ 
 
 编辑： 
 
 我确实需要使用这个缓存，我想使用Redis。 

I got the following problem,
 
I got a class 'Car' with a function that uses EntityFramework to reach the Database and gets all the table rows by a few filters.
 
Something like this : 
 
public class car
{
     private const string VEHICLE_TYPE = "something_here";
    [CachedAttribute(30)]
    public virtual List<Vehicles> GetVehiclesFromDB()
    {
        return _repository.Set<Vehicles>().Where(e => e.VehicleType == VEHICLE_TYPE && e.Weight < CAR_MAX_WEIGHT);
    }
}
 
I also added an attribute on top of it. Inside this attribute i need to be able to retrieve a few things,
 
I need to get the class name( in this case car), I also need to get the type of the returned value of the function ( in this case the object Vehicles) and i need to get the value inside VEHICLE_TYPE .
 
After that i need to be able to execute that function ('GetVehiclesFromDB') from inside the attribute 
 
public class CachedAttribute : Attribute
{
    public CachedAttribute(int seconds)
    {

      // todo
    }
}
 
I never done those sort of things and i am not sure what is the approach i should take. Is it a case of reflection? or maybe it is something completely different?
 
Edit : 
 
I indeed need to use this for cache, i want to use Redis for that.

原文：https://stackoverflow.com/questions/42503569