在C＃中添加类型过滤器 [英] Adding Type Filters In C#

问题描述

如何向.NET Dictionary添加类型过滤器，以便TValue成为继承EventListener接口的类对象？所以例如

How do I add type filters to a .NET Dictionary so that the TValue will be a class object that inherits my EventListener interface? So for example

Dictionary<string, object> events = new Dictionary<string, object>(); //where object would have to inherit EventListener

推荐答案

查看以下示例：

Look at following sample:

interface I {};

class a : I {};
class b : I {};
class c {};

void Main()
{
    Dictionary<string, I> x = new Dictionary<string, I>();
    x.Add("a", new a());
    x.Add("b", new b());
    x.Add("c", new c()); //will fail
}

这篇关于在C＃中添加类型过滤器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！