I've easily found various QR-Code generators, but I need to use the data stored in the barcode on a regular desktop app using VB.Net and a WebCam or eventually an flash, javascript webpage to do the job.
Should there be an online service for this? Maybe a flash app?
What are the steps that I have to follow while i connect the barcode reader in my desktop application.
View 6 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 case where I need to create barcodes to a Crystal Reports 2008 report (but this isn't as much about Crystal Reports in the end). But after a day's worth of googling I've become quite puzzled with all the different methods of encoding barcode data and all the various fonts.
I downloaded a free Code128 font from [URL] and also a program that can encode text into suitable format for the barcode font to use from here [URL] Now that works splendidly with the font installed, but the problem is that Crystal Reports does not recognize it as a barcode font when printing. It shows up fine in designer and when printing it out to PDF, but in my application's CrystalViewer it is shown as Arial font and the same goes for printing. Yet it can be succesfully exported as a PDF file via Crystal, and the barcode shows up fine. This is all on the same computer so the font is installed properly obviously.
So anyways, I noticed that Windows 7 comes with its own Code128, Code128A, B and C fonts. THEY show up properly (but are not readable because I don't know the proper control characters) in every place I need them to, but I can't for the life of me understand how to encode suitable data for them. The previously used encoding method produces box-characters because the control characters in it are not a part of these fonts. For example if I encode "123456" with the program I mentioned, it'll give out "Í,BXLÎ" and that works fine with the external Code128 font. But it does not work with the ones Windows 7 comes with, they show up as "[](proper bars)[]", or "Í(proper bars)Î". The start and stop characters are replaced with boxes or left as they are because they don't exist as proper bars for the font. what the deal is with the Windows 7's built-in Code128 fonts? Why do they use different control characters for other fonts of the same format? Can anyone figure out how to get a readable and proper barcode for example in Excel with the built-in Code128 fonts?
I am writing a string of about 120 characters to a 2D barcode. Along with other text, the string contains a unique ticket number. I want to ensure that someone doesn't generate counterfeit tickets by reading the 2D barcode and generation their own barcoded tickets.
I would like to hash the string and append the hash value to what gets embedded in the barcode. That way I can compare the two on reading and see if the data had been tampered with. I have seen several hash function that return 64 bytes and up but the more characters you embed in a 2D barcode the bigger the barcode image becomes. I would like an algorithm that returns a fairly small value. It would also be nice if I could provide the function my own key. Collision is not that big of a deal. This isn't any kind of national security application.
I'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 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]...
Im using VB2008... Net framework 3.0. Basically I have a barcode scanner that is sending the software data...Everything is working fine if I interface the scanner as a keyboard wedge and set the scanner suffix as 'Enter'...In the software I have an event handler on keypress.down...
If keycode.Enter then
.....
.....
....
etc.
However as a RS232 interface I cant get the same result? Hyper terminal reads it perfectly. I've tried all the keypress options but it doesnt work (I assume because it's not actually a key press). when the textbox recieves the CR/LF from RS232? The scanner that does keyboard wedge interfacing is not an option as it is far too expensive for my project.
I want to upload data at regular intervals, for that I used windows service with timer. Now problem is when I start my service. Its showing System.IO.IOException error.
View 8 RepliesI'm having trouble trying to find the best method to do what I'm needing.
I'm thinking of using a regular expression to read a .txt file and parse out the MAC id information that will be in the text file. I was wondering if there was an easier way to do it or what the best way to do this is.
readall(textfile)
macID = d{1, 4}.d{1, 4}.d{1, 4}
totalMacInfo = all the macs in the text file?
If you guys have an alternative solution or a good way to write out the code I am open to suggestions. Not exactly sure how best to mix the expression into reading a txt file to get the data i need.
I have a regular expression that I use to grab data between two sets of id's for example:
<CLASSCOD>70</CLASSCOD>
The regular expression I use is:
(?<=<CLASSCOD>)(?:[^<]|<(?!/CLASSCOD))*
Which works in most case but when I have a single value like this
<CLASSCOD>N</CLASSCOD>
It says there are no matches.
The whole data string looks like this :
<STATUS>PRESOL</STATUS>
<DATE>0601</DATE>
<YEAR>11</YEAR>
<AGENCY>Department of the Interior</AGENCY>
<OFFICE>Bureau of Indian Affairs</OFFICE>
[Code] .....
ok, For the moment I have a string() where each element is in the structure of
[Code]...
I'm trying to find the right RegEx to capture some (potentially) repeating data. I don't know how many times it will repeat. If I give an exanple of the data and what I want to capture can anyone point me in the right direction? It's the .Net regex engine (Visual Basic)
[Code]...
I have written code to pull some data into a data table and do some data re-formatting. I need some help splitting some text into appropriate columns.
CASE 1
I have data formated like this that I need to split into 2 columns.
[Code]...
column is the first 11 characters That is easy.column 2 should contain all the text after the first 11 characters up to but not including the first number.The last column is all the text after column 2
I'm mohammed from Oman ,I'm visual studio.net programmer How I can Read the Data From Barcode Weight scales By Serial port and TcpIp port
View 7 RepliesI'm writing an app in vb.net and was wondering wath the best way to store/retrieve data was?
View 5 Repliesi have a simple phone which supports GPS (to be more specific is HTC HD windows mobile) my main scope is to develop a desktop application which i can set up a connection between the phone and the desktop application to read some coordinates of the receiving gps data and display them to a simple textbox or msgbox. the only way to connect the phone to a pc is via USB port. can i do that? i have check on the internet but all they are referring to a non build in phone gps, but to an individual GPS devices only.
View 10 RepliesWay to Store Data from a Desktop App?
View 10 RepliesThis website "[url]..." contains currency exchange rate, and it's useful to my desktop application " bill system " .the question is: How to get data from this website to my desktop application textboxes ?
View 4 RepliesWe have a Windows Forms VB.NET application running on Windows Server 2008. Users access this app using Remote desktop.The app displays information in Excel, but Excel opens on the server.Is there a way for the .NET app to launch Excel on the users local desktop?
View 1 RepliesSome of u already know I'm making a 'virtual desktop'- thing.Only one problem. When switching to a new desktop it starts a new instance of my app in that desktop (works) and on the form load event it says process.start("explorer.exe") <- here is the problem. It only shows a window not the actually bar.Also this may be important it shows the window, but when I navigate to explorer.exe 'C:Windowsexplorer.exe' and open it there. The explorer bar does show up.
View 14 RepliesI am designing a desktop application that will be driven by local data. I am trying to determine the best way to accomplish this. The database would contain about 10-12 tables if I use a database and I would imagine no more than 10000 records in any one table (but honestly 99% of users would not have more than 1000 records). I am thinking about using SQL Server Compact.
Is this a good solution? I can certainly include this in my installation, but I am just wondering if anyone knows of a better solution? If this is the best solution, how would you suggest that I create the tables upon deployment? Should I just run "queries" with create table statements in them from my vb application or include a database file or what?
I want to save data from web and desktop applications and then provide that info again to fill the forms with the saved data .I am using vs2008 and sql2005
View 3 RepliesIm using ms-acess 2007 as database and this issue is ridiculous.i run the FORM and enter some details ! and now i click display and display the data that was entered! this thing happens while im DEBUGGING sometimes when i stop debugging and debug again the data that was stored previously its not even getting displayed!! and its not even present in the actual database ! this doesn't happen every time!! this is weird and i dont understand , whats causing this issue?
View 1 RepliesI want to know wot is the binary data stored while writing on the cd.I jus want the exact binary sequence present on the cd/DVD..
View 4 Repliesi was just wondering if there was a way that i could compare data stored in a text file such as usernames and passwords with data input into text boxes in visual studio vb2008?
View 6 RepliesI should create a program for a Pocket PC that reads & writes data from an MSAccess database located on a desktop computer (pocket PC and desktop one are connected through a Wi-Fi connection).Is that possible?
View 3 RepliesI have written a vb.net desktop application for pipe collectors and one of the requests that seems popular is to be able to post pipe details (text) and an image of the pipe onto the user's facebook wall.
Basically the user will bring up their pipe details of choice and be able to click a 'Post To Wall" button which would then post the pipe details onto their wall.
ive made changes to my data stored in the database for a login i.e. ive changed the password that is stored in the database however for my application to continue the previous password still has to be used does anybody know why and how to change this, this also is the case for new entry's in the database i.e. new users. I also had an update button that also no longer works i think this is because of the same problem. I think the problem is that its saving the data changes from the update to the data set and not the database its self can this be changed?
View 4 Replies