Specifies the type of change that occurred on the SerialPort object.
Assembly: System (in System.dll)
|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.|
|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.|
|A ring indicator was detected.|
|A break was detected on input.|
This enumeration is used with the PinChanged event.
A serial port pin changes state when it is asserted or unasserted.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.