How To Modify An Element in the Dictionary Class?

[Xarzu]

How To Modify An Element in the Dictionary Class?
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C# has this cool Dictionary class that you can use like a Hash Table. Is there a way of changing the value of an indexed element without resorting to removing it like this?

               int value = runningcount[city];
               runningcount.Remove(city);
               runningcount.Add(city, ++value);