When overridden in a derived class, sets the position within the current stream.
An I/O error occurs. The stream does not support seeking, such as if the stream
/// is constructed from a pipe or console output. Methods were called after the stream was closed.
/// Thrown when no stream is assigned as decorated stream.
///
publicSeek ( longoffset, SeekOriginorigin ) : long
offset
long
A byte offset relative to the origin parameter.
origin
SeekOrigin
A value of type indicating the reference
/// point used to obtain the new position.