c# - Dictionary KeyNotFoundException even though Key exists

Question

I have a RegistryKey as a Key for my dictionary.

I cannot seem to set a value for that specific Key. Whatever I do, I keep getting a KeyNotFoundException. The Key does exist, I created it one line earlier

e.g:

public Dictionary<RegistryKey, Dictionary<string, object>> subKeyNodes = new...
subKeyNodes.Add(mainKeyNode.CreateSubKey(keyName),new Dictionary<string, object>());
subKeyNodes[mainKeyNode.CreateSubKey(keyName)].Add("ROAR", "value");

The Add works fine. Adding with that key value always fails and I cannot seem to figure it out.

Answer 1

A much better way is to provide something that implements IEqualityComparer<RegistryKey> to the constructor of the Dictionary - that way, you don't need to wrap each object.