.NET字典中的重复键？ [英] Duplicate keys in .NET dictionaries?

问题描述

在.NET基类库中是否有任何允许使用重复键的字典类？我找到的唯一解决方案是创建一个类，如：

Are there any dictionary classes in the .NET base class library which allow duplicate keys to be used? The only solution I've found is to create, for example, a class like:

Dictionary<string, List<object>>

但是这实际上是很刺激的。在Java中，我相信MultiMap会实现这一点，但是在.NET中找不到模拟。

But this is quite irritating to actually use. In Java, I believe a MultiMap accomplishes this, but cannot find an analog in .NET.

推荐答案

如果您使用的话。 NET 3.5，使用 查找 。

If you're using .NET 3.5, use the Lookup class.

编辑：您通常使用 Lookup /msdn.microsoft.com/en-us/library/system.linq.enumerable.tolookup.aspxrel =noreferrer> Enumerable.ToLookup 。这确实假定你以后不需要改变它 - 但是我通常会发现这很好。

You generally create a Lookup using Enumerable.ToLookup. This does assume that you don't need to change it afterwards - but I typically find that's good enough.

如果那个不工作对于你，我不认为框架中有什么可以帮助的 - 并且使用字典与它得到的一样好：（

If that doesn't work for you, I don't think there's anything in the framework which will help - and using the dictionary is as good as it gets :(

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