The implementation of ParseNext will call this method the very first time that ParseNext is called. Override this method to perform setup work for the parsing such as initializing the state, opening the file to be parsed, etc. The default implementation of this method does nothing.

protected virtual void BeforeParsing()

Protected Overridable Sub BeforeParsing

protected:
virtual void BeforeParsing()

abstract BeforeParsing : unit -> unit 
override BeforeParsing : unit -> unit