Generate random values in C#

Question

How can I generate random Int64 and UInt64 values using the Random class in C#?

Answer 1

I always use this to get my random seed (error checking removed for brevity):

m_randomURL = "https://www.random.org/cgi-bin/randnum?num=1&min=1&max=1000000000";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(m_randomURL);
StreamReader stIn = new StreamReader(req.GetResponse().GetResponseStream());
Random rand = new Random(Convert.ToInt32(stIn.ReadToEnd()));

random.org uses atmospheric noise to generate the randomness and is apparently used for lotteries and such.