The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.
SerialPort::IsOpen Property
.NET Framework (current version)
Gets a value indicating the open or closed status of the SerialPort object.
Assembly: System (in System.dll)
Property Value
Type: System::Booleantrue if the serial port is open; otherwise, false. The default is false.
| Exception | Condition |
|---|---|
| ArgumentNullException | The IsOpen value passed is null. |
| ArgumentException | The IsOpen value passed is an empty string (""). |
The IsOpen property tracks whether the port is open for use by the caller, not whether the port is open by any application on the machine.
.NET Framework
Available since 2.0
Available since 2.0
Show: