MemoryStream Constructor (Byte[], Boolean)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Initializes a new non-resizable instance of the MemoryStream class based on the specified byte array with the CanWrite property set as specified.

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

public MemoryStream(
	byte[] buffer,
	bool writable


Type: System.Byte []
The array of unsigned bytes from which to create this stream.
Type: System.Boolean
The setting of the CanWrite property, which determines whether the stream supports writing.


buffer is null.

The CanRead and CanSeek properties are both set to true. Capacity is set to the length of the specified byte array.

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).

This constructor does not expose the underlying stream. GetBuffer throws UnauthorizedAccessException.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

© 2015 Microsoft