Correct method of a “static” Random.Next in C#?

Question

Why do i need to create an instance of Random class, if i want to create a random number between 1 and 100 ....like

Random rand = new Random();
rand.Next(1,1         


        

Answer 1

Random number generators must maintain state in order to be "random." The random number generator creates a sequence that is generated based on a random seed. The problem is that nothing in a computer is actually random. The closest thing the computer has at hand is the system clock; that is the effectively the time at which the process takes place. So by default the current tick count of the system clock is used. If your application is fast enough then many random number calculations may occur under the same system tick. If the random number generator doesn't maintain state at all, it will provide the same random number multiple times (same input gives the same output). This is not usually what you want.

I know its already answered, but I just have to say that I prefer to use the singleton pattern in this case.