C#查找没有泛型类型的所有类实现接口

Question

我有Interface与Generic Type

public interface IWork<T>
{
    void Work(MySession session, T json);
}

尝试此代码时Classes，我试图找到所有实现Interface所有泛型类型的

var type = typeof(IWork<>);
var types = AppDomain.CurrentDomain.GetAssemblies()
            .SelectMany(s => s.GetTypes())
            .Where(p => type.IsAssignableFrom(p));

它返回Interface它自己。

Answer 1

问题是没有类/接口会直接扩展泛型接口，它们都会为给定的类型参数（无论是具体类型，string还是其他类型参数）扩展泛型接口的实例化。您需要检查类实现的任何接口是否是通用接口的实例：

class Program
{
    static void Main(string[] args)

    {
        var type = typeof(IWork<>);
        var types = AppDomain.CurrentDomain.GetAssemblies()
                    .SelectMany(s => s.GetTypes())
                    .Where(p => p.GetInterfaces().Any(i=> i.IsGenericType && i.GetGenericTypeDefinition() == type))
                    .ToArray();

        // types will contain GenericClass, Cls2,Cls,DerivedInterface  defined below
    }
}

public interface IWork<T>
{
    void Work(object session, T json);
}

class GenericClass<T> : IWork<T>
{
    public void Work(object session, T json)
    {
        throw new NotImplementedException();
    }
}
class Cls2 : IWork<string>
{
    public void Work(object session, string json)
    {
        throw new NotImplementedException();
    }
}
class Cls : GenericClass<string> { }

interface DerivedInterface : IWork<string> { }