SerialPort::DsrHolding Property
.NET Framework (current version)
Gets the state of the Data Set Ready (DSR) signal.
Assembly: System (in System.dll)
Property Value
Type: System::Booleantrue if a Data Set Ready signal has been sent to the port; otherwise, false.
| Exception | Condition |
|---|---|
| IOException | The port is in an invalid state. - or - An attempt to set the state of the underlying port failed. For example, the parameters passed from this SerialPort object were invalid. |
| InvalidOperationException |
This property is used in Data Set Ready/Data Terminal Ready (DSR/DTR) handshaking. The Data Set Ready (DSR) signal is usually sent by a modem to a port to indicate that it is ready for data transmission or data reception.
.NET Framework
Available since 2.0
Available since 2.0
Show: