PortController events are signals that PortController sends to your application when something interesting on the port has occurred. For example, when data is received in the incoming buffer you can use PortController's DataReceived event to call your application's read function.

A powerful technique for reading from the port is to handle the EventCharReceived that is fired when a specific character is received in the incoming buffer. This is useful if you are reading formatted data that is delimited by a character such as a newline or a comma. When the delimiter you specify is received on the line, PortController fires the event and optionally reads the data from the incoming buffer and supplies it to your handling function.

The complete list of events fired by PortController is as follows:

Event	Description
OnBreakSignal	Fired when the Break signal is received.
OnCtsToggle	Fired when the state of the Clear-to-Send line changes.
OnDsrToggle	Fired when the state of the Data-set-Ready line changes.
OnCdToggle	Fired when the state of the Carrier Detect line changes.
OnDataReceived	Fired when a character is received and placed in the buffer.
OnError	Fired when a line-status error occurs.
OnEventCharReceived	Fired when the event character is received and placed in the input buffer.
OnFileTransferComplete	Fired upon the completion of a successful, failed, or cancelled file transfer.
OnFileTransferStatusUpdate	Fired periodically during a file transfer with information regarding the progress of the operation.
OnRing	Fired when the state of the Ring line changes from high to low.
OnTQEmpty	Fired when the last character in the output buffer is sent.