我想进行测试,如果对象是一个泛型类型。我已经尝试了以下没有成功:
I would like to perform a test if an object is of a generic type. I've tried the following without success:
public bool Test()
{
List<int> list = new List<int>();
return list.GetType() == typeof(List<>);
}
我是什么做错了,我如何执行该测试?
What am I doing wrong and how do I perform this test?
如果您要检查它是否是一个泛型类型的实例:
If you want to check if it's an instance of a generic type:
return list.GetType().IsGenericType;
如果您要检查它是否是一个普通的名单,其中,T&GT;
:
If you want to check if it's a generic List<T>
:
return list.GetType().GetGenericTypeDefinition() == typeof(List<>);
正如乔恩所指出的,这个检查的确切类型等价。返回假
不一定意味着列表清单&LT; T&GT;
返回假
(即对象不能被分配到一个名单,其中,T&GT;
变量)。
As Jon points out, this checks the exact type equivalence. Returning false
doesn't necessarily mean list is List<T>
returns false
(i.e. the object cannot be assigned to a List<T>
variable).