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Stream.ReadByte Method

Reads a byte from the stream and advances the position within the stream by one byte, or returns -1 if at the end of the stream.

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

'Declaration
Public Overridable Function ReadByte As Integer

Return Value

Type: System.Int32
The unsigned byte cast to an Int32, or -1 if at the end of the stream.

ExceptionCondition
NotSupportedException

The stream does not support reading.

ObjectDisposedException

Methods were called after the stream was closed.

Use the CanRead property to determine whether the current instance supports reading.

Attempts to manipulate the stream after the stream has been closed could throw an ObjectDisposedException.

Notes to Implementers

The default implementation on Stream creates a new single-byte array and then calls Read. 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 reads the buffer directly, avoiding the extra array allocation on every call.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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