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MemoryStream.MemoryStream(Int32) Constructor

Initializes a new instance of the MemoryStream class with an expandable capacity initialized as specified.

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

public MemoryStream (
	int capacity
)
public MemoryStream (
	int capacity
)
public function MemoryStream (
	capacity : int
)
Not applicable.

Parameters

capacity

The initial size of the internal array in bytes.

Exception typeCondition

ArgumentOutOfRangeException

capacity is negative.

For an example of creating a file and writing text to a file, see Writing Text to a File. For an example of reading text from a file, see Reading Text from a File. For an example of reading from and writing to a binary file, see Reading and Writing to a Newly Created Data File.

The CanRead, CanSeek, and CanWrite properties are all set to true.

The capacity automatically increases when you use the SetLength method to set the length to a value larger than the capacity of the current stream. Except for a MemoryStream constructed with a byte[] parameter, write operations at the end of a MemoryStream expand the MemoryStream.

This constructor exposes the underlying stream that GetBuffer returns.

This code example is part of a larger example provided for the MemoryStream class.

using(MemoryStream memStream = new MemoryStream(100))

MemoryStream memStream =  new MemoryStream(100);

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, 1.0

XNA Framework

Supported in: 1.0

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