Why does Random.Next() always return the same number [duplicate]

Answer 1

Salam to All, Well it drove me crazy as well. The answer is simple. Change the seed before you generate random.

Example: I want to generate random number between 1 to 10

Random rnd = new Random(DateTime.Now.Seconds);
int random_number = rnd.Next(10);

Put it inside a loop and run it three times. It will give out random numbers below 10.