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MemoryStream.GetBuffer Method

Returns the array of unsigned bytes from which this stream was created.

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

public virtual byte[] GetBuffer()

Return Value

Type: System.Byte[]
The byte array from which this stream was created, or the underlying array if a byte array was not provided to the MemoryStream constructor during construction of the current instance.

ExceptionCondition
UnauthorizedAccessException

The MemoryStream instance was not created with a publicly visible buffer.

Note that the buffer contains allocated bytes which might be unused. For example, if the string "test" is written into the MemoryStream object, the length of the buffer returned from GetBuffer is 256, not 4, with 252 bytes unused. To obtain only the data in the buffer, use the ToArray method; however, ToArray creates a copy of the data in memory.

The buffer can also be null.

To create a MemoryStream instance with a publicly visible buffer, use MemoryStream, MemoryStream(Byte[], Int32, Int32, Boolean, Boolean), or MemoryStream(Int32). If the current stream is resizable, two calls to this method do not return the same array if the underlying byte array is resized between calls. For additional information, see Capacity.

NoteNote

This method works when the memory stream is closed.

.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.

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