Specifies the type of change that occurred on the SerialPort object.
Assembly: System (in System.dll)
|A break was detected on input.|
|The Carrier Detect (CD) signal changed state. This signal is used to indicate whether a modem is connected to a working phone line and a data carrier signal is detected.|
|The Clear to Send (CTS) signal changed state. This signal is used to indicate whether data can be sent over the serial port.|
|The Data Set Ready (DSR) signal changed state. This signal is used to indicate whether the device on the serial port is ready to operate.|
|A ring indicator was detected.|
This enumeration is used with the PinChanged event.
A serial port pin changes state when it is asserted or unasserted.