获取类实现的泛型接口的类型参数

要将其限制在一个特定风格的通用接口上,您需要获取通用类型定义并与“开放”接口进行比较。( IGeneric<> -注:未指定“T”):

List<Type> genTypes = new List<Type>();
foreach(Type intType in t.GetInterfaces()) {
    if(intType.IsGenericType && intType.GetGenericTypeDefinition()
        == typeof(IGeneric<>)) {
        genTypes.Add(intType.GetGenericArguments()[0]);
    }
}
// now look at genTypes

或作为LINQ查询语法:

Type[] typeArgs = (
    from iType in typeof(MyClass).GetInterfaces()
    where iType.IsGenericType
      && iType.GetGenericTypeDefinition() == typeof(IGeneric<>)
    select iType.GetGenericArguments()[0]).ToArray();

typeof(MyClass)
    .GetInterfaces()
    .Where(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IGeneric<>))
    .SelectMany(i => i.GetGenericArguments())
    .ToArray();

  Type t = typeof(MyClass);
            List<Type> Gtypes = new List<Type>();
            foreach (Type it in t.GetInterfaces())
            {
                if ( it.IsGenericType && it.GetGenericTypeDefinition() == typeof(IGeneric<>))
                    Gtypes.AddRange(it.GetGenericArguments());
            }


 public class MyClass : IGeneric<Employee>, IGeneric<Company>, IDontWantThis<EvilType> { }

    public interface IGeneric<T>{}

    public interface IDontWantThis<T>{}

    public class Employee{ }

    public class Company{ }

    public class EvilType{ }