How To Change Which Serial Comport Is Being Used In Code

Nov 20, 2010

im currently working on a program which prints serial text to an aplication like note pad. the problem im having is that i cant figure out how to change which serial comport is being used in code. i want the user to chose the comport with a check box.keep in mind that COM1 in my code is what i called my check box. here is my curent code:

Public Class Form1
Private Sub OpenFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles OpenFileDialog1.FileOk
Shell(OpenFileDialog1.FileName, 1)

[code]....

View 1 Replies


ADVERTISEMENT

Have A Program Which Will Read Data From Comport When Ever There Is Data On Comport?

Dec 4, 2009

I have a program which will read data from comport when ever there is data on comport. I am using Comport.DataReceived event to do that.My program will receive data very frequently and it is working fine. The problem is, it will work for 3 to 4 days fine but after that my receive data will slow down. I am receiving data with high delay (about 10-15 min).There will be continuous data to my comport.

View 4 Replies

Code For Checking The Serial Serial Number Of A Usb Stick?

Nov 21, 2011

With this code i check the serial serialnumber of a usb stick.

[code]...

It is not perfect because the programma crash when there is no usb in de PC.But how do i search fot the sctick if it has a name , for example PPH ? And not G: , because it is everytime a different station.

View 5 Replies

Write A Code For Serial Ports Without Sucess But The Code Does Not Throw An Error ?

Feb 20, 2011

what is wrong with my code and I get no feedback from my button click event, i have imported. ( code Below) and i have tied differrent combinations of the code without sucess.maybe add extra to my code for the list to show open Port or closed ports.

Imports System.Management
Imports System.Management.ManagementObjectSearcher
Imports System.Management.ManagementNamedValueCollection[code].....

View 9 Replies

Serial Port Example Code - Connect To A Modem Thru The Serial Port

Oct 26, 2011

The link below has code to connect to a modem thru the serial port but it is for an earlier version of VB. when I convert the code, it does not fully convert and has 4 errors that prevent building the project. can someone tell me what needs to be changed or added?

[URL]

Note: the error: not CLS-Compliant

View 8 Replies

How To Change Serial Port Settings

Feb 17, 2009

I made serial COM1 work by default settings in serial port properties. If I want to change to another port,e.g. COM2 as well as change other settings (baud rate, data its, etc.), how to re-open this new port?

View 2 Replies

Update Combobox When Available Serial Ports Change

Dec 17, 2010

I want to know if there is a way to refresh a combo box when a new serial port becomes available.[code]

View 2 Replies

Send An Image File Through COMPORT?

Sep 28, 2009

I would like to ask about sending an image file through serial port to a external embedded processor....

the way i think i want to do it is that i would like to open the image file in VB.NET as a binary file and then

1)either converting this binary file to a text file and then read the content of that text file to sent it through UART to that external processor or

2)Converting the binary file into an array and send that array through uart.[code]...

View 3 Replies

USB Device Identification & Comport Mapping?

May 6, 2007

I have a USB gadget that appears to Windows as a USB serial port, there is no special driver.I know the USB Vendor ID, and the USB Product ID, I need 1 or 2 functions:

First: IsThisUsbDevicePresent( Vendor_ID, Product_ID )

Second: Some means of transforming the above into "COM1" or "COM9" or what ever it is so I can call it. And that- should be doable from VB...

View 1 Replies

VS 2008 - Sending Data To A Comport

Nov 2, 2010

I am having trouble sending data to a comport..... I am a noob at this and have been doing my head in... I have done a fair bit to a few programs that I have on the go, but am stuck at sending some data to the comport...

I have in form1 put the serial port contol and added SerialPort1.Open() to that. I have then added 3 buttons that I was to use to send data to the port... Since this is for a radio scanner the buttons turn the backlight on / dim and off.....

LTN is used to turn the light on and works fine in hyperterminal.. I have got the port settings right in vs2008 but the code is wrong.

I have:

code:

Then I get warning of Name 'LTN' is not declared...

View 8 Replies

VS 2008 Send Data From USB To ComPort?

Dec 25, 2009

I have a barcode scanner which sends data to USB Port. I want to redirect it into ComPort. So that I can manipulate it. How can I do It in Visual Basic 2008 Or how to convert usb port to ComPort in Visual basic 2008

View 1 Replies

VS 2005 Use MSCOMM For Monitoring Serial Ports For Voltage Change?

Jul 22, 2009

I'm wondering how I could monitor a serial port for a voltage change or contact closure and have an event triggered when there is a detection.

View 1 Replies

Coding For Comport Signal To Trigger Event?

Oct 23, 2009

Im connecting a infrared transmitter by serial port, Rs232 to my pc. Anyone know the coding for the comport to detect the signal and auto trigger a sms event(by gsm modem) ??????

View 4 Replies

COMPort Reference In Subroutines VB Express 2008

Sep 21, 2010

I'm trying to communicate through a serial port with separate subroutines for establishing the connection to the device and handling routine messages. I'm able to establish the connection, but reference to the COMPort in another subroutine fails with a message that the port is closed. I can successfully communicate using COMPort.Write commands within the connection subroutine, so I know that works. How do I pass a reference for the comport to other subroutines?

[Code]...

View 6 Replies

Read Data From Comport And Display It In Text Box?

Dec 25, 2009

I am trying to read data from comport and display data in a rich text box.

View 2 Replies

.net - Can't This Code Open A Serial Port?

Sep 1, 2010

Public Class my_class Dim WithEvents COMPort As New System.IO.Ports.SerialPort

Public Sub FindReader()
Dim ports As String() = IO.Ports.SerialPort.GetPortNames()
Dim port As String
For Each port In ports

[Code3]...

When it runs, it shows a single COM port "COM1". I am assured that the device attached to it is a standard 8,n,1 and uses 9,600 baud. The exception is "Acess to the port 'COM1' is denied".

View 1 Replies

Code For Serial Data Transmission?

Mar 2, 2010

I want to the code for serial data transmission in vb.net. and pls give full information abt how to use serial port in VB.net

View 1 Replies

Make A Serial Code For My Program?

Jul 24, 2010

I am having my app available for 30days free trial, but after that you have to purchase a serial, how can i make my app only recognize a specific type e.g NumberLetterLetterNumberLetterLetterNumberNumber-NumberLetter-Letter:NumberNumberNumberNumber?

OR what would be the easiest way to have serials recognised?

View 8 Replies

What Would Be The Code For Serial Number Authentication

Nov 14, 2010

I am programming in visual basic 2008 I would like to set up serial numebers for software im developing. I would like to prevent software theft by ensuring that each purchased copy has a unique serial number that can only be used once. How would i create this so

a.) The serial numeber can only be used once

b.) The software cannot run without a correct serial number

c.) The serial number verification box pops up on ONLY the first use of the program and goes away after correct serial number is entered

d.) a serial number generation and verification program

View 1 Replies

Working On Serial Key - Code For Combo Box

Apr 2, 2012

I am working on serial key. but i have set everything but i dont know the code for combo box like i have list of stuff example
John admin
jonny goodmnan

So when people select this name then the phone number should appear on the textbox

like this
John adam
1234567890 should appear on the txtbox

I dont know any code to show thats why i dont have any idea what to add the phone numbers

View 7 Replies

Communicating Trough A RS 232 Comport To A Modbus Protocol Controller?

Apr 19, 2010

I need to interface between a PC and a Microcontroller based Controller to transfer data between the PC and the Controller?

Ive got acces to the register numbers or names in the Microcontroller.

View 2 Replies

Code To Attach 2 Buttons On Serial Port

Jun 30, 2009

I need code to read a serial port state in which I have 2 buttons attached to some configuration on pins 1-9. The program will then, when one of the buttons are pushed, right arrow or left arrow as a keyboard command.

View 2 Replies

Printing Code To A Zebra Serial Printer

May 26, 2012

I have a scanner Motorola MC 90090 which is a wireless scanner, till now we used to print a barcode label to a zebra wireless printer which is on a default location.

But now I want to print a barcode label when printer connected serially(through USB).

View 5 Replies

Communications :: Modifying Existing Code For Serial Communication?

Sep 21, 2009

I've seen this great example of serial communication in VB.NET

[URL]

I try to use it in a project I am working on but somethings are not clear to me.

1: Now the send and received data is shown in one RichTextBox but I would like to split this into two RichTextBoxes (RtbSend and RtbReceived).It is unclear to me how and were data is assigned to the RichTextBox?

2. the received data is shown in the Richtextbox as one long line, I would like to get a new line for every send message.So for example: I I send "test" four times, I would like to see:

Test
Test
Test
Test

now I see: Test Test Test Test I've tried ctrlf but this does not work.The example describes that "comPort_DataReceived" is executed when data is waiting in the buffer. Where can I see the eventhandler responsible for this? How does it know data is waiting?The problem is this kind of coding is a bit to difficult for me. I want to understand the code before I implement it into my project.

View 5 Replies

Setup DataTableAdapters To Allow For Easy Code Change When Change Server Names?

Feb 20, 2012

I'm getting familiar now with using the Dataset Designer and how it makes for quick and easy updates and query of tables. I use to use the OleDB commands and leave the Connection String as a Global Constant so I can easily change it if the server name changes, or if we have to re-direct the .NET to another instance of the database.

But now that I use the Dataset designer I'm concerned that I maintain flexibility and support in the long run. how the Dataset designer works and where it stores it's connection string info? And how difficult that would be to update. It looks like I modify the App.config file, but I'm unfamiliar with this.

What am I getting myself into? It looks like a standard XML file. Is that it?

View 1 Replies

Rs232 Serial Programming - Port To C# - .net Code Works Correctly - C# NOT?

Nov 5, 2009

The vb.net code is functioning correctly as it talks to a device through COM1 serial port.What I was hoping was the equivalent c# code is not creating the same string and as a result, the serial 'packet' is not correct. Check this illustration of my problem [URL]...

My goal is to eliminate the addition of the extra characters '/0' and '/b' that what I hoped was the c# equivalent to the correctly functioning vb.net code. It just occurred to me I should change the code to employ Stringbuilder. The 'packetbuilder' method/function builds a string and keeps concatenating things to itself.

[Code]...

View 5 Replies

How To Change Server.Transfer Code To PHP Redirect Code With Member Id

Sep 18, 2010

I have a code in VB that looks like this:'Server.Transfer(txtUser.Text + "_page.aspx")which is taking a forms authenticated user to their page. For example if John logs in, it will take him to john_page.aspx.How will I be able to integrate this in a PHP login script?I'm trying something like:header("location: $member ._page.php");but I don't think I'm doing this correctly.

View 1 Replies

Change My Code # To Code In All The Text Files Within A Folder?

May 20, 2012

How can I change my code # to Code & in All the text files within a folder

View 10 Replies

VS 2008 Application To Reject Serial And Count How Many Times Entered In A Wrong Serial

May 16, 2009

I made my program and now I just need to add in the serial and trial part of the application. I know the application must connect to the host and go to a txtfile. How would i do the trial and serial. Also If the serial is already activated I want the application to reject that Serial and Count how many times they entered in a wrong serial.

View 2 Replies

Unable To Close Serial Port After USB / Serial Converter Disconnected

Mar 28, 2006

I have a stand alone VB.Net 2005 application that uses a serial port that generally stays open while the application runs on a Windows XP system. In trying to bullet-proof the UI, I ran into a problem when the USB to Serial Converter normally used to provide the serial port is disconnected while the serial port is open. In trying to handle the resulting error when accessing the port, I find I cannot close the port.

When trying to do so, the error message says something like "unable to close the port. You may not have sufficient permissions." Reconnecting the USB/Serial Converter does not reactivate the port.

[Code]...

View 8 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved