[c#] Editing dictionary values in a foreach loop

If you're feeling creative you could do something like this. Loop backwards through the dictionary to make your changes.

Dictionary<string, int> collection = new Dictionary<string, int>();
collection.Add("value1", 9);
collection.Add("value2", 7);
collection.Add("value3", 5);
collection.Add("value4", 3);
collection.Add("value5", 1);

for (int i = collection.Keys.Count; i-- > 0; ) {
    if (collection.Values.ElementAt(i) < 5) {
        collection.Remove(collection.Keys.ElementAt(i)); ;
    }

}

Certainly not identical, but you might be interested anyways...

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