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BufferedStream.SetLength Method

Sets the length of the buffered stream.

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

public override void SetLength (
	long value
)
public void SetLength (
	long value
)
public override function SetLength (
	value : long
)
Not applicable.

Parameters

value

An integer indicating the desired length of the current buffered stream in bytes.

Exception typeCondition

ArgumentOutOfRangeException

value is negative.

IOException

The stream is not open or is a null reference (Nothing in Visual Basic).

NotSupportedException

The stream does not support both writing and seeking.

ObjectDisposedException

Methods were called after the stream was closed.

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 buffer is flushed before setting the length of the underlying data source or repository. If the specified value is less than the current length of the buffered stream, the buffered stream is truncated. If the specified value is larger than the current length of the buffered stream, the buffered stream is expanded. If the buffered stream is expanded, the contents of the buffered stream between the old and the new lengths are not defined.

SetLength flushes any buffered writes if necessary.

A stream must support both writing and seeking for SetLength to work.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, 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

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