How do I seed a random class to avoid getting duplicate random values
c#, random
Solution
You should not create a new `Random` instance in a loop. Try something like:
var rnd = new Random();
for(int i = 0; i < 100; ++i)
Console.WriteLine(rnd.Next(1, 100));
The sequence of random numbers generated by a single `Random` instance is supposed to be uniformly distributed. By creating a new `Random` instance for every random number in quick successions, you are likely to seed them with identical values and have them generate identical random numbers. Of course, in this case, the generated sequence will be far from uniform distribution.
For the sake of completeness, if you really need to reseed a `Random`, you'll create a new instance of `Random` with the new seed:
rnd = new Random(newSeed);
Problem
I have the following code inside a static method in a static class: ``` Random r = new Random(); int randomNumber = r.Next(1,100); ``` I have this inside a loop and I keep getting the same `randomNumber`! Any suggestions here?