Use this class to control a serial port file resource. This class provides synchronous and event-driven I/O, access to pin and break states, and access to serial driver properties.

The most important class, SerialPort, provides a framework for synchronous and event-driven I/O, access to pin and break states, and access to serial driver properties. It can be used to wrap Stream objects, allowing the serial port to be accessed by classes that use streams.

The My.Computer.Ports.SerialPortNames property gets a collection of the names of the serial ports on the computer. The following table lists an example of a task involving the My.Computer.Ports.SerialPortNames property.

2024年12月13日 · This topic describes programming traditional COM ports. For information on USB attached serial ports, see USB serial driver (Usbser.sys).

2022年12月28日 · This topic describes programming traditional COM ports. For information on USB attached serial ports, see USB serial driver (Usbser.sys).

Indicates that data has been received through a port represented by the SerialPort object.

In this example, the users are prompted for the port settings and a username before chatting. This code example is part of a larger code example provided for the SerialPort class.

Use the GetPortNames method to query the current computer for a list of valid serial port names. For example, you can use this method to determine whether COM1 and COM2 are valid serial ports for the current computer. The port names are obtained from the system registry (for example, HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM).

In this example, the users are prompted for the port settings and a username before chatting. This code example is part of a larger code example provided for the SerialPort class.

public SerialPort (string portName, int baudRate, System.IO.Ports.Parity parity, int dataBits, System.IO.Ports.StopBits stopBits); new System.IO.Ports.SerialPort : string * int * System.IO.Ports.Parity * int * System.IO.Ports.StopBits -> System.IO.Ports.SerialPort