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MemoryStream Constructor (Byte[], Int32, Int32, Boolean, Boolean)

Initializes a new instance of the MemoryStream class based on the specified region of a byte array, with the CanWrite property set as specified, and the ability to call GetBuffer set as specified.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)

public MemoryStream(
	byte[] buffer,
	int index,
	int count,
	bool writable,
	bool publiclyVisible
)

Parameters

buffer
Type: System.Byte[]

The array of unsigned bytes from which to create this stream.

index
Type: System.Int32

The index into buffer at which the stream begins.

count
Type: System.Int32

The length of the stream in bytes.

writable
Type: System.Boolean

The setting of the CanWrite property, which determines whether the stream supports writing.

publiclyVisible
Type: System.Boolean

true to enable GetBuffer, which returns the unsigned byte array from which the stream was created; otherwise, false.

ExceptionCondition
ArgumentNullException

buffer is null.

ArgumentOutOfRangeException

index or count is negative.

ArgumentException

The buffer length minus index is less than count.

The CanRead and CanSeek properties are both set to true. Capacity is set to count.

The new stream instance can be written to, but the Capacity of the underlying byte array cannot be changed. The length of the stream cannot be set to a value greater than the initial length of the specified byte array; however, the stream can be truncated (see SetLength).

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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