Convert dictionary to list collection in C#

Question

I have a problem when trying to convert a dictionary to list.

Example if I have a dictionary with template string as key and string as value. Then I wish to convert the dictionary key to list collection as a string.

Dictionary<string, string> dicNumber = new Dictionary<string, string>(); List<string> listNumber = new List<string>();  dicNumber.Add("1", "First"); dicNumber.Add("2", "Second"); dicNumber.Add("3", "Third");  // So the code may something look like this //listNumber = dicNumber.Select(??????); 

Answer 1

To convert the Keys to a List of their own:

listNumber = dicNumber.Select(kvp => kvp.Key).ToList(); 

Or you can shorten it up and not even bother using select:

listNumber = dicNumber.Keys.ToList(); 

Answer 2

Alternatively:

var keys = new List<string>(dicNumber.Keys);