Tells if an item already has a serial number

Determines whether the specified object is equal to the current object.

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.

Serves as the default hash function.

Given a serialNumber, return the item with that serial number

Assigns a serial number to a new item. Raises an exception of the item is not new.

Returns the serial number of an item. If the item has already been assigned a serial number, returns that number; otherwise, assigns a new number to the item and returns that new number.

Finds the serial number of item to which a serial number has already been assigned. Raises an exception of the item is new.

Gets the Type of the current instance.

Creates a shallow copy of the current Object.

Write the items in order to a TextWriter

Returns a string that represents the current object.

Finds the serial number of item to which a serial number has already been assigned.