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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
)

Parameters

value
Type: System.Int64

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

ExceptionCondition
ArgumentOutOfRangeException

value is negative.

IOException

The stream is not open or is null.

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 How to: Write Text to a File. For an example of reading text from a file, see How to: Read Text from a File. For an example of reading from and writing to a binary file, see How to: Read and Write 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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

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