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CryptoStream.CryptoStream Constructor

Initializes a new instance of the CryptoStream class with a target data stream, the transformation to use, and the mode of the stream.

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

CryptoStream (
	Stream^ stream, 
	ICryptoTransform^ transform, 
	CryptoStreamMode mode
public CryptoStream (
	Stream stream, 
	ICryptoTransform transform, 
	CryptoStreamMode mode
public function CryptoStream (
	stream : Stream, 
	transform : ICryptoTransform, 
	mode : CryptoStreamMode
Not applicable.



The stream on which to perform the cryptographic transformation.


The cryptographic transformation that is to be performed on the stream.


One of the CryptoStreamMode values.

Exception typeCondition


stream is not readable.


stream is not writable.


stream is invalid.

Any object that derives from Stream can be passed into the stream parameter. Any object that implements ICryptoTransform (such as HashAlgorithm) can be passed into the transform parameter.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0