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c#dictionarycopy
Bernard Larouche
Bernard Larouche

Reputation: 1231

copying dictionary doesn't give me expected result

I have to copy one dictionary, work with that copy and return to the original one.

What seems to happen is that the orignal dictionary is modified when I do some work on the copied one.

Here is my code : 

dmodified_profile = new SortedDictionary<int,SortedDictionary<string,List<string>>>(d_profile);

I don't know why d_profile which is the original one could be modified if my modifications are done on the dmodified_profile dictionary ?

Thanks

Upvotes: 1

Views: 153

Answers (2)

Andre Pena
Andre Pena

Reputation: 59446

Your SortedDictionary maps an integer to a REFERENCE to another SortedDictionary. When you copy that dictionary you copy the values of the keys as well as the REFERENCEs of the values, because your dictionary's value is of a reference type.

Upvotes: 3

Alex Brasetvik
Alex Brasetvik

Reputation: 11754

You need to deep copy.

Upvotes: 5

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