C Sharp Make a smaller randomised list from another list

csharpsmallerrandomlist.cs

private List<int> yourlargelist;
private List<int> yoursmalllist;
private int numberofelementsforsmalllist;

List<int> yourtemporarylist = new List<int>(yourlargelist);
Random rand = new Random();
int n = yourtemporarylist.Count();
while (n > 1)
{
	n--;
	int k = rand.Next(n + 1);
	int value = yourtemporarylist[k];
	yourtemporarylist[k] = yourtemporarylist[n];
	yourtemporarylist[n] = value;
}
yoursmalllist = yourtemporarylist.Take(numberofelementsforsmalllist).ToList();