How to create byte array and fill it with random data [duplicate]

Question

I want to create a byte array against the given size filled with random data.How can I do that?Signature of my method would be like this:

private byte[] GetByteArray(int sizeInKb){}

This is what I have tried:

private byte[] GetByteArray(int sizeInKb){var rnd = new Random();var bytes = new Byte[sizeInKb*1024];rnd.NextBytes(bytes);return bytes;}

Here I want to return byte array conataining random data against value of sizeInKb. Is my array size correct , when user inputs value in kb e.g. 10 KB.

Best Answer

Accepted Answer

Try the Random.NextBytes method https://learn.microsoft.com/en-us/dotnet/api/system.random.nextbytes?view=netframework-4.7.2

private byte[] GetByteArray(int sizeInKb){Random rnd = new Random();byte[] b = new byte[sizeInKb * 1024]; // convert kb to byternd.NextBytes(b);return b;}

If you need cryptographically safe random bytes, use System.Security.Cryptography.RNGCryptoServiceProvider instead.

How to create byte array and fill it with random data [duplicate]

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