Creating a list of KeyValuePair:
Dictionary<int, int> dictionary = new Dictionary<int, int>();
List<KeyValuePair<int, int>> list = new List<KeyValuePair<int, int>>();
list.AddRange(dictionary);
Creating a list of keys:
Dictionary<int, int> dictionary = new Dictionary<int, int>();
List<int> list = new List<int>();
list.AddRange(dictionary.Keys);
Creating a list of values:
Dictionary<int, int> dictionary = new Dictionary<int, int>();
List<int> list = new List<int>();
list.AddRange(dictionary.Values);