如何使用反射确定已实现接口的通用类型？

Question

I am writing something that needs to discover the types of all the properties in an object at runtime, using reflection. I'm fine with simple properties, I just get the PropertyInfo and the type is directly available. I can't work out what to do for generic collections, though. For example, suppose I am handed an instance of the following class at runtime:

public class AnyClass
  {
  public ICollection<int> ListOfInts;
  }

So I use Type.GetProperties and pretty soon I have my PropertyInfo object for ListOfInts .

What's my next step? How do I go from having the PropertyInfo, to working out that it is a list of ints? How can I determine the generic type ( <int> in this example case) of the collection from just the PropertyInfo ?

Answer 1

您可以获取通用参数类型的名称：

propertyInfo.PropertyType.GetGenericArguments()[0].Name

Answer 2

I believe you are looking for generic arguments of the type. See PropertyInfo.PropertyType and Type.GenericTypeArguments

PropertyInfo.PropertyType.GenericTypeArgument