VB.net VS2022 => How to generate random number that is a Single or Double

[Swisskid]

Trying to generate a Single or Double random number between 0 and 1 inclusive of 0 and 1.

I can use rnd() method & it works but everyone on the various VB fora claim this is a bad way to do it (old & pseudorandom length too short)

I have tried "RandomNumberGenerator.GetInt32" and apparently this is a better method but seems to only generate integer values. I need Single/Double capability.
I do not need Crypto (just doing science Monte Carlo calculation) but would love a really long sequence before repeats.

Thanks for any help guys!

[Niya]

You can just use the Random class to do this:-

        Dim r As New Random

        'Generates a random number between 0 and 1
        Dim number As Double = r.NextDouble()

[Swisskid]

Thank you Niya, I will try this! Looks simple enough. Thank you.

[Niya]

Note that the upper range is less than 1 so the largest number generated will be something like 0.99...

[jmcilhinney]

Note that both RandomNumberGenerator and Random can generate random Bytes, so you can use those Bytes any way you want, e.g. use BitConverter to convert four Bytes to a Single. That said, you'd probably just use Random.NextDouble and Convert.ToSingle, if a Single is what you need.

Note also that the Random class has had a Shared property since .NET 6, so you don't need to create your own instance anymore, unless you need multiple different instances or to specify your own seed.

[Swisskid]

Great input jmcilhinney... this will help get exactly what I need. Appreciate the help from you both!!!