Question

I have just passed this article online:
C# Corner and C# Corner and his article (a software developer with over 13 years of experience) recommended using System.Random as follows:

private int RandomNumber(int min, int max)
{
    Random random = new Random();
    return random.Next(min, max); 
}

Isn’t that would give him the same number every time ??

Edit:

So my question will become: How does Random choose its seed? a constant or current time value?

Thanks

Answer 1

It will give the same result when the method will be called often between short time intervals. This is because the Randoms seed is initialized with the current time value.
This is also the reason why many people have problem of kind that random is not random at all.

BTW it is not Math.Random but System.Random

---

Following your edit, here is some information on how random is initialized. The information comes from the link above.

The random number generation starts
from a seed value. If the same seed is
used repeatedly, the same series of
numbers is generated. One way to
produce different sequences is to make
the seed value time-dependent, thereby
producing a different series with each
new instance of Random. By default,
the parameterless constructor of the
Random class uses the system clock to
generate its seed value, while its
parameterized constructor can take an
Int32 value based on the number of
ticks in the current time. However,
because the clock has finite
resolution, using the parameterless
constructor to create different Random
objects in close succession creates
random number generators that produce
identical sequences of random numbers.