Windows Dev Center

MemoryStream Constructor (Byte[])

Initializes a new non-resizable instance of the MemoryStream class based on the specified byte array.

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

public MemoryStream(
	byte[] buffer
)

Parameters

buffer
Type: System.Byte []
The array of unsigned bytes from which to create the current stream.

ExceptionCondition
ArgumentNullException

buffer is null.

The CanRead, CanSeek, and CanWrite properties are all set to true. Capacity is set to the length of the specified byte array. The new stream can be written to, but is not resizable.

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.

Version Notes

Windows Phone

 System.ArgumentNullException is thrown when trying to retrieve a MemoryStream object with a size of zero bytes from a resource file. On Windows, no exception is thrown when the length is equal to zero.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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