Reader. 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 reader.
public: virtual int Peek();
public virtual int Peek ();
abstract member Peek : unit -> int override this.Peek : unit -> int
Public Overridable Function Peek () As Integer
An integer representing the next character to be read, or -1 if no more characters are available or the reader does not support seeking.
An I/O error occurs.
The Peek method returns an integer value in order to determine whether the end of the file, or another error has occurred. This allows a user to first check if the returned value is -1 before casting it to a Char type.
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.