How to update value of a key in dictionary in c

Question

I have the following code in c    basically it s a simple dictionary with some keys and their values   Dictionary lt string  int gt  dictionary       new Dictionary lt string  int gt     dictionary Add  cat   2   dictionary Add  dog   1   dictionary Add  llama   0   dictionary Add  iguana   -1     I want to update the key  cat  with new value 5  How could I do this

User · Answer

Try this simple function to add an dictionary item if it does not exist or update when it exists:

    public void AddOrUpdateDictionaryEntry(string key, int value)
    {
        if (dict.ContainsKey(key))
        {
            dict[key] = value;
        }
        else
        {
            dict.Add(key, value);
        }
    }

This is the same as dict[key] = value.

User · Answer

Dictionary is a key value pair  Catch Key by   dic  cat      and assign its value like  dic  cat     5

User · Answer

Just use the indexer and update directly   dictionary  cat     3

User · Answer

Have you tried just  dictionary  cat     5        Update  dictionary  cat     5 2  dictionary  cat     dictionary  cat   2  dictionary  cat      2    Beware of non-existing keys

[c#] How to update value of a key in dictionary in c#?

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