Random Number genration in c#

[Suj_78]

Hi Guys, The random number in c# using System.Random.NextDouble() is not returning a good set of random numbers over 10000 iterations, there seems to be concentration for a consecutive iterations on set of values, my code looks like this System.IO.StreamWriter file = new System.IO.StreamWriter("c:\\test.txt"); for (int i=0;i<10000;i++) { RandomNumber = new Random(); string lines = "iterationCount"+ ":"+" "+i.ToString()+ " "+RandomNumber.NextDouble().ToString(); file.WriteLine(lines); //} } file.Close(); is there a better way of generatin random numbers in c#? Many Thanks

happy coding!

[Colin Angus Mackay]

Suj_78 wrote:

RandomNumber = new Random();

Put that line outside the loop. When you create a new Random number generator it is seeded against the current time. If the loop is very short there is no time for the clock to update, so it gets reseeded against the same time as the last iteration, therefore producing the same number again.

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[Suj_78]

Thanks Colin.

happy coding!