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BinaryReaderPeekChar Method

Returns the next available character and does not advance the byte or character position.

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

public virtual int PeekChar()
virtual int PeekChar()
abstract PeekChar : unit -> int
override PeekChar : unit -> int
Public Overridable Function PeekChar As Integer

Return Value


The next available character, or -1 if no more characters are available or the stream does not support seeking.

Exception Condition

An I/O error occurs.


The current character cannot be decoded into the internal character buffer by using the Encoding selected for the stream.


If surrogate characters can be expected in the stream use the ReadChars method, then set the stream back to the original position.

For a list of common I/O tasks, see Common I/O Tasks.

Version Information
Universal Windows Platform
Available since 4.5
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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