Ports.OpenSerialPort Method (String, Int32)
Creates and opens a SerialPort object.
Assembly: Microsoft.VisualBasic (in Microsoft.VisualBasic.dll)
String. Required. Name of the port to open.
Integer. Baud rate of the port.
Your code should close the SerialPort object when it is finished using the object. You can use the Close method to close the object explicitly or the Using statement to close it implicitly. See the example in this topic for more information.
The following table lists examples of tasks involving the My.Computer.Ports.OpenSerialPort method.
Dial a modem attached to a serial port
Send a string to serial port
Receive strings from a serial port
Windows Control Library
Web Control Library
This example describes how to send strings to the computer's COM1 serial port.
The Using block allows the application to close the serial port even if it generates an exception. All code that manipulates the serial port should appear within this block, or within a Try...Catch...Finally block with a call to use the Close method.
The WriteLine method sends the data to the serial port.
Sub SendSerialData(ByVal data As String) ' Send strings to a serial port. Using com1 As IO.Ports.SerialPort = My.Computer.Ports.OpenSerialPort("COM1") com1.WriteLine(data) End Using End Sub
For more information, see How to: Send Strings to Serial Ports in Visual Basic.
Available since 2.0
Objects (Visual Basic)
How to: Dial Modems Attached to Serial Ports in Visual Basic
How to: Send Strings to Serial Ports in Visual Basic
How to: Receive Strings From Serial Ports in Visual Basic
Using Statement (Visual Basic)