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TextReader.Peek Method

Reads the next character without changing the state of the reader or the character source. Returns the next available character without actually reading it from the input stream.

[Visual Basic]
Public Overridable Function Peek() As Integer
[C#]
public virtual int Peek();
[C++]
public: virtual int Peek();
[JScript]
public function Peek() : int;

Return Value

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

Exceptions

Exception Type Condition
ObjectDisposedException The TextReader is closed.
IOException An I/O error occurs.

Remarks

The current position of the TextReader is not changed by this operation. The returned value is -1 if no more characters are available. The default implementation returns -1.

The following table lists examples of other typical or related I/O tasks.

To do this... See the example in this topic...
Create a text file. Writing Text to a File
Write to a text file. Writing Text to a File
Read from a text file. Reading Text from a File
Get the size of a file. FileInfo.Length

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework, Common Language Infrastructure (CLI) Standard

See Also

TextReader Class | TextReader Members | System.IO Namespace | Working with I/O | Reading Text from a File | Writing Text to a File

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