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RNGCryptoServiceProvider.GetNonZeroBytes Method

Fills an array of bytes with a cryptographically strong sequence of random nonzero values.

Namespace:  System.Security.Cryptography
Assembly:  mscorlib (in mscorlib.dll)

public override void GetNonZeroBytes(
	byte[] data


Type: System.Byte[]
The array to fill with a cryptographically strong sequence of random nonzero values.


The cryptographic service provider (CSP) cannot be acquired.


data is null.

The length of the byte array determines how many cryptographically strong random nonzero bytes are produced.

The following code example creates a random sequence of 100 nonzero bytes and stores it in random.

byte[] random = new Byte[100];
//RNGCryptoServiceProvider is an implementation of a random number generator.
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
rng.GetNonZeroBytes(random); // The array is now filled with cryptographically strong random bytes, and none are zero.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.