question about class Random

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1.36/5 (3 votes)

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hi friends,

i want to know how Random class in c# generate random number. in fact i want to know structure of function Next(MinValue,MaxValue) that create random number.you know that all we know that it is not random in fact but developers of it show it to us like a random generator.

thanks.

Posted 9-May-14 1:10am

_Starbug_

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[no name] 9-May-14 7:14am

Okay so if you want to know how the Random class functions work, then there it nothing at all stopping you from downloading the source for the framework, finding the Random class and looking at it.

Meysam Toluie 9-May-14 7:17am

+5

_Starbug_ 9-May-14 7:23am

great persian read question carefully.

[no name] 9-May-14 7:32am

We are reading it. You are not explaining anything.

_Starbug_ 9-May-14 7:24am

no sir. you do not understand me.i am not a beginner in programming. i want the structure of Next(int,int) function of it. it generate a random number between min value and max value of parameters. but how it do this? what is the code for doing this? developers of next function what code places in the behind of next() function. i want this?

[no name] 9-May-14 7:31am

Download the source for the Random class. Look at the Next function. See how it is done. If that is not what you want then you need to ask clearly about what it is that you want. This is exactly what you asked for.

_Starbug_ 9-May-14 8:54am

thanks

_Starbug_ 9-May-14 7:36am

i founded it myself. thank you

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Rob Philpott · Accepted Answer · 2014-05-09T01:30:00

As Wes says, look at the source.

I've just opened it up in dotPeek and it looks like this, although I think you'd need to study the whole class for context.

C#

public virtual int Next(int minValue, int maxValue)
{
  if (minValue > maxValue)
  {
    throw new ArgumentOutOfRangeException("minValue", Environment.GetResourceString("Argument_MinMaxValue", (object) "minValue", (object) "maxValue"));
  }
  else
  {
    long num = (long) maxValue - (long) minValue;
    if (num <= (long) int.MaxValue)
      return (int) (this.Sample() * (double) num) + minValue;
    else
      return (int) ((long) (this.GetSampleForLargeRange() * (double) num) + (long) minValue);
  }
}