I have a application written in C# using a usercontrol which inherites from control.
On this control i want to use a PS/2 barcode scanner. Get recieve the response i user control.KeyPress. Some some of the chars gets filtered mostly the double chars.
I am building a POS app with a barcode scanner that auto-return( = pressing keyboard's enter key) after each scan. I need to handle this event by processing the scanned barcode against my items database table. I am using the scanner in keyboard wedge mode so I selected a textbox control to collect the scanned barcode, clear cache and ready to collect another barcode data from scanner. I have tried all the changed events I know on text boxes but I dont get the desired result, I cant clear cache and my cusor wont remain in the text box! I have used the keypress, keydown, textChanged and Enter methods, in most cases I got only the first digit in the barcode.
View 2 RepliesA friend of mine called me to that we need a program for our club that when a member will enter in club gate so first of he will have a card upon which a barcode will be printed and through barcode reader his code will be scanned and will be find out that whether he is a temporary member or regular member or absent member or other. Only regular members are allowed to enter into club and allowed to avail all services of club. Now the question is that i dont know that how the custom barcode will be created and how the scanner will be controlled with vb.net?
View 8 RepliesI am using Richard L. Grier's Enhanced Serial Port dll to read input from a serial port barcode scanner I notice that the datareceived event fires only once per barcode scan, but the delegate sub fires twice per barcode scan. Once for 1st half of Barcode , 2nd for 2nd part of barcode This makes it hard to capture the full barcode so it can be passed to routines in my vb.net 2008 windows application In Richard's example 'Test Enhanced Port' program he sends it to a textbox using .selectedtext and it works fine Richards Delegate code ......................
Public Delegate Sub DisplayData(ByVal Buffer As String)
'This delegate routine marshals receive data from the receive thread context DataReceived to the Windows Form STAThread context
Private Shared Sub Display(ByVal Buffer As String)
[code]....
I am trying to set a variable to the full barcode to pass to routines, instead of writing to a textbox but am not having any success
I am a student and I am about to make a program that will use a barcode scanner well ofcourse to scan a barcode. My problem is i don't know what library to use and what certain things i need to do so that when i am going to scan a barcode it'll be something like show it on a textbox and pull something from the database. i've actually research some. i've seen mscomm1 (not so sure about that) and POS for .net (haven't fully understood its use) were those will help me develop my program?i have a metrologic ms9520 Voyager barcode scanner. and i am going to create a program for it in vb2005.
View 1 RepliesI have a TextBox which Is allowed only to read certain characters. I use KeyPress event to handle this event. I understand that The KeyPress event does not handle the pressing of the DELETE key on the keyboard. I do not want the user to be able to delete characters in the txtbox by using the DELETE key, I want the user only to be able to use the backspace key. I am writing this code in Visual Basic 2005. The following code appears to work in handling the DELETE key, but I am concerned that I might get bitten by the fact that I am using KeyDown and KeyPress on the same control (txtSource).
private sub txtSource_KeyDown(byval sender as object, byval e as KeyEventArgs) handles txtSource.KeyDown
IF e.KeyData = System.Windows.Forms.Keys.Delete then
e.handled=true
end if
end sub
I am writing an inventory control application in which a barcode scanner will be hooked up to a laptop computer in our shipping/receiving department. What I'm wondering is, whenever a shipment comes in and the receiving clerk starts scanning the products, what exactly do I need to do in order to setup our database so that the scanner recognizes which vendor/product etc. and puts the data in the correct tables. I've written inventory control apps before but never one that incorporated the use of a barcode scanner.
View 8 RepliesIs there any Visual Basic SDK that will let me scan a barcode from a webcam, not an image? I have seen some that read from files, but this is not what I am looking for. If possible, I would love it if this is free!
View 2 RepliesI have downloaded the BarcodeLib.dll from[url]...
And however, my barcode scanner cannot read the hard copy barcode images that i have printed out as the following.[url]...
I have done research and some articles mention that dimension of the images will effect the readability of the barcode.
May i know what is the correct dimension to make my barcode images to be readable?
We are using USB barcode scanner to scan material barcode labels. These labels are from our vendors. We does not have control over the label generation. We are using USB barcode scanner for scanning purpose. We want to capture USB barcode scanner output. Normally the scanner returns output in the place holder in which the cursor present.But we do not put writable text box for the cursor. Instead of write allowable text box we want to put locked or readonly text box in the screen and want to capture scanner value.How can we do?Assume that our barcode scanner does not support serial ports.
View 6 RepliesI want to use barcode system in my vb project. Can sombody help me on
1) What type of barcode scanner should I use?
2) Where should I start on VB code or where should I refer to?
I've recently been asked to develop an application for the Motorola MK4000, an all-in-one device with a built-in barcode scanner. It runs Windows CE and supports VB.Net.
I've never written an application for Windows CE, nor using a barcode scanner.
I'm familiar with VB.NET so I'm confident I can figure this out, how to use the barcode scanner with possibly some example code of how to detect it and read data from it.
I have built many applications that work with a barcode reader. What I need now is a means to reading the scanned item through a background services such as a windows services or something.My task is to scan a barcode on a identification label that is placed on a cut size of glass and record the order line item as being processed. This will update the database to reflect the cut size has been completed.My restriction is the processes keeps an application showing a cut pattern of the stock sheet of glass in focus so I can not have another application active to capture the scanners results. Here in lies where I have to have a application running in the background listening for a text or alpha-numeric string that will tell the application to run the scan.
View 3 RepliesI want to use a barcode scanner to read barcode and appear in textbox. This is my first project involve barcode.
View 6 RepliesAnyone able to advice my how to connect barcode reader device into visual studio 2005? My device model is acanlogic cs-2030?
View 1 RepliesI need to implement a USB barcode scanner into a VB project. With no code directed at the scanner, it works when a textbox is selected. I need it to put the numbers in the textbox whether the textbox is selected or not (as long as the form is open). I would also like it to save the numbers to a variable.
View 6 RepliesCan somebody help me please in making a database for barcode system using barcode scanner, my system is about attendance monitoring.
View 2 RepliesI have written a couple vb.net applications to run on a workabout pro scanner by PSION. Each time I have had the data saved in a datatable. And when I need data loaded on the scanner I load it into a datatable.Is this the best way to do it? Or is there a specific type of database supported? These scanners run Windows CE.
View 4 RepliesI'm building an application that reads barcode scanning data into multiple forms and textboxes. At the moment, to handle that data I have created a large nested if statement that checks to see which object has focus so that the scanned data is placed there and focus moves down to the next object:
Private Sub HandleData(ByVal TheReaderData As Symbol.Barcode.ReaderData)
'Scanning Data into frmGetCount
If frmName.Name = "frmGetCount" Then
[code].....
This is just for one of 5 forms I am currently developing. I am looking for a way to make this code much more dynamic and re-usable by removing the hard-coded objects name
I would like to do the application that accept the reading from Barcode scanner. What barcode scanner I should use? And, vb.net can support on that and work well?
View 6 RepliesI have a USB bar code scanner that is acting as an HID keyboard emulation device. I want a web page that, for testing purposes, pops up a JavaScript alert when a scan is done. I don't want to tie the event to any visible control such as a textbox so thus, I won't have focus on any control to capture the scan input. Can this be done? I'm using VS 2010 with .NET 4.0 and VB.NET with a Symbol USB bar code scanner.
View 1 RepliesI have a program that reads a barcode scanner to populate a field of a database, I should say that that specific program is a standard application and I can't modify it.
The issue I am having is that the computer must have the focus on that program and in the capture screen for the barcode scanner to function properly. I would like for the PC to be able to do other things and at the moment the barcode is used it directed the scan to the proper window. The window for the program may be oppened but not necesarily have the focus.
I know how to catch the input from the scanner, but what can I do to send the data to the other program?
=I have textbox1, textbox2, command button1.
Textbox1 is the general console.
Textbox2 is the barcode field.
Commandbutton1 is the confirm button.
Scenario:
When scanner scaned a barcode, it will appear in the textbox2, when click on the commandbutton, it then add to the textbox1.
My problem is, when I scaned the second item, it can appear in the textbox2, but when I click on the commandbutton it then replace the previous item in the textbox1.
How can I make the textbox1 keeping all the record, and when everytime click on the commandbutton1, it appear in the next line in textbox1 rather than keep replacing the first data?
I've got a lose focus textbox which when data in entered and the tab key is hit the code is executed as expected and a message box appears informing the user of the outcome. However when I used a barcode scanner with a tab function embedded, the code is executed and the data is inserted into a database but the textbox to say if the request was successfully completed or not does not show as expected.
View 1 RepliesI am trying to create keypress handler that will execute a line of code when Tab, Space, or Enter key is pressed or passed by the scanner gun while the control is in focus. I got it to work with space and enter key but with tab key, the cursor will just jump to the next tab stop without executing the code.
Private Sub Button2_KeyPress(sender As Object, e As System.Windows.Forms.KeyPressEventArgs) Handles Button2.KeyPress
Dim keyChar As Char
[Code].......
i was wondering if it was possible to write my own firmware that will run on a device im making. This device is very similar to the price portable price checkers you see in grocery stores. it scans the barcode which returns an id number. More information about my device and about the big project im working on can be found here: My Idea For A New Type Of WCP (Wireless Connection Protocol)
[Code]...
i need to create an application where input are to be received by the barcode scanner.However, i am not suppose to use the textbox to do so. However i need to use the serial port to do so. Any one know how am i able to do that?
View 1 RepliesI'm trying to read barcode using a scanner through a serial input(com1). Below you will see the code I'm working with, when I scan the barcode the code goes through the datareceived event and doesnt add the read barcode to the listbox. However when I use hyperterminal and scan the barcode it reads and displays the barcode.
[Code]....
I am developing a Winforms application which read barcode from barcode scanner. It's an Human wedge scanner. This will work if I placed the cursor in any textbox or notepad. But i don't want like that. Reason is that it's cordless scanner. If some want to scan some thing in store they will move around, so there is possibility of screen saver coming or system gets locked if that happens the barcodes wont capture, but the user who is scanning the barcodes won't know this thing.
So i am reading the data using serial port communication and my scanner sending the data character by character, Not a whole string. so for that I wrote the following code. Thsi code will works if i am writing to any textbox. But it is not working if want to store it in any global string. Only first character is storing in the string. The below code is working perfectly fine. but if want to save the string in Global String variable instaed of textbox the only first character in the string is storing.
[Code]...
created form with a textbox barcode scanner result in textbox1 it's worked great then i want textbox text to save in table without pressing any key how do this?
View 7 Replies
