Today we will make a software on Microsoft Visual Basic 2010 in which we will send data through the serial port in VB 2010. In this software we will send the data and also receive it. Simply follow all the given steps carefully and you can easily interface the Serial Port in VB 2010, its a fully working project with code so don’t do any mistake. Serial port data can be read in many ways and many devices communicate via the serial port. In my project I had the need to implement serial port communication for a RFID reader. This is a sample example to read data from the serial port and display on the Windows Forms TextBox control. Although the.
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Aug 24, 2012 Visual Basic Serial COM Port Tutorial-Part 1 download the source code: https://sourceforge.net/projects/vbserialcomport/files/. Welcome to my tutorial on Serial Port Communication in VB.Net. Lately Ive seen a lot of questions on how to send and receive data through a serial port, so I thought it was time to write on the topic.
Vb Net Serial Port Example 2017
-->This topic describes how to use
My.Computer.Ports
to receive strings from the computer's serial ports in Visual Basic.To receive strings from the serial port
- Initialize the return string.
- Determine which serial port should provide the strings. This example assumes it is
COM1
. - Use the
My.Computer.Ports.OpenSerialPort
method to obtain a reference to the port. For more information, see OpenSerialPort.TheTry..Catch..Finally
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. - Create a
Do
loop for reading lines of text until no more lines are available. - Use the ReadLine() method to read the next available line of text from the serial port.
- Use an
If
statement to determine if the ReadLine() method returnsNothing
(which means no more text is available). If it does returnNothing
, exit theDo
loop. - Add an
Else
block to theIf
statement to handle the case if the string is actually read. The block appends the string from the serial port to the return string. - Return the string.
Example
This code example is also available as an IntelliSense code snippet. In the code snippet picker, it is located in Connectivity and Networking. For more information, see Code Snippets.
Compiling the Code
![Visual studio serial port example Visual studio serial port example](/uploads/1/2/4/9/124906551/779804264.jpg)
This example assumes the computer is using
COM1
.Robust Programming
![Vb serial port read example Vb serial port read example](/uploads/1/2/4/9/124906551/189640699.jpg)
This example assumes the computer is using
COM1
. For more flexibility, the code should allow the user to select the desired serial port from a list of available ports. For more information, see How to: Show Available Serial Ports.This example uses a
Try..Catch..Finally
block to make sure that the application closes the port and to catch any timeout exceptions. For more information, see Try..Catch..Finally Statement.