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Stream.WriteByte Method

Writes a byte to the current position in the stream and advances the position within the stream by one byte.

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

public virtual void WriteByte (
	byte value
)
public void WriteByte (
	byte value
)
public function WriteByte (
	value : byte
)
Not applicable.

Parameters

value

The byte to write to the stream.

Exception typeCondition

IOException

An I/O error occurs.

NotSupportedException

The stream does not support writing, or the stream is already closed.

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.

Use the CanWrite property to determine whether the current instance supports writing.

Notes to Implementers: The default implementation on Stream creates a new single-byte array and then calls Write. While this is formally correct, it is inefficient. Any stream with an internal buffer should override this method and provide a much more efficient version that writes to the buffer directly, avoiding the extra array allocation on every call.

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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