Constructor parameter and null

Can the constructor parameter dictionary be null. Will the constructor throw?

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#### Document Details

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* ID: 3a1d69a0-45da-b27a-5618-14657457905b
* Version Independent ID: b3480f40-ac06-d7c6-8fe5-0dc1ecdc6636
* Content: [ReadOnlyDictionary<TKey,TValue>(IDictionary<TKey,TValue>) Constructor (System.Collections.ObjectModel)](https://docs.microsoft.com/en-us/dotnet/api/system.collections.objectmodel.readonlydictionary-2.-ctor?view=netframework-4.7)
* Content Source: [xml/System.Collections.ObjectModel/ReadOnlyDictionary`2.xml](https://github.com/dotnet/dotnet-api-docs/blob/master/xml/System.Collections.ObjectModel/ReadOnlyDictionary`2.xml)
* Product: **dotnet-api**
* GitHub Login: @dotnet-bot
* Microsoft Alias: **dotnetcontent**