Convert dictionary to List<KeyValuePair>

To convert a Dictionary<TKey, TValue> to a List<KeyValuePair<TKey, TValue>> you can just say

var list = dictionary.ToList();

or the more verbose

var list = dictionary.ToList<KeyValuePair<TKey, TValue>>();

This is because Dictionary<TKey, TValue> implements IEnumerable<KeyValuePair<TKey, TValue>>.

Using linq:

myDict.ToList<KeyValuePair<double, double>>();

Dictionary elements are KeyValuePair items.

Like Jason said. But if you don't really need a list, then you can just cast it to an ICollection<TKey, TValue>; because it implements this interface, but some parts only explicitly. This method performs better because it don't copy the entire list, just reuses the same dictionary instance.