重复在.NET词典按键？ [英] Duplicate keys in .NET dictionaries?

问题描述

是否有任何字典类在.NET基础类库，允许重复键使用？我发现的唯一的解决办法是创建，例如，一类这样的：

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，这是相当刺激性的实际使用。在Java中，我相信一个multimap中完成这一点，但无法找到在.NET中模拟。

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

如果您使用的是.NET 3.5，使用的 查找 类。

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

编辑：通常你创建一个查找使用<一个href="http://msdn.microsoft.com/en-us/library/system.linq.enumerable.tolookup.aspx"><$c$c>Enumerable.ToLookup.这并不认为你不需要事后改变它 - 但我通常会发现这是不够好

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.

如果说的不的为你工作，我不认为有什么事的框架，这将有助于 - 并使用字典是爱在心里口难开：（

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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