CODEWITHSUNDEEP
c#
Marco Lima
Marco Lima

Reputation: 3

Delete specific Key from Dictionary into another Dictionary - C#

I have this example of dictionary:

private Dictionary<string, Dictionary<int, List<Configs>>> dict_of_all_configs 
  = new Dictionary<string, Dictionary<int, List<Configs>>>();

Now i want delete some item from the second dictionary, i know the 1ºKey(parentNode), 2ºKey(childNode):

public void DeleteSelectedConfig(bool parentNodeSelect, string parentNode, string childNode)
{
  if ( parentNodeSelect )
    dict_of_all_configs.Remove(parentNode);
  else
  {
    //Dont work it:
    dict_of_all_configs.Remove(dict_of_all_configs[parentNode][int.Parse(childNode)][0].ToString());

    //dict_of_all_configs.Where(pair => pair.Key == parentNode).Select(pair =>
    //{
    //    dict_of_all_configs.Remove(pair.Key);
    //    return pair.Key;
    //});
  }

Any idea? Thanks.

Upvotes: 0

Views: 63

Answers (1)

Sweeper
Sweeper

Reputation: 270995

If I understand correctly, you want to remove a key value pair from the nested dictionary, given the key of the nested dictionary (parentNode) and the key you want removed (childNode).

You can do it like this (assuming the keys exist):

dict_of_all_configs[parentNode].Remove(int.Parse(childNode));

dict_of_all_configs[parentNode] gives you the nested dictionary, which is the dictionary from which you want to .Remove(...) a key. You should not call .Remove on dict_of_all_configs directly, because you don't want any keys to be removed from the outer dictionary.

Upvotes: 1

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