[c#] Convert dictionary to list collection in C#

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(??????);

foreach (var item in dicNumber)
{
    listnumber.Add(item.Key);
}

If you want to pass the Dictionary keys collection into one method argument.

List<string> lstKeys = Dict.Keys;
Methodname(lstKeys);
-------------------
void MethodName(List<String> lstkeys)
{
    `enter code here`
    //Do ur task
}

Alternatively:

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

If you want convert Keys:

List<string> listNumber = dicNumber.Keys.ToList();

else if you want convert Values:

List<string> listNumber = dicNumber.Values.ToList();

If you want to use Linq then you can use the following snippet:

var listNumber = dicNumber.Keys.ToList();