Get The Factory Or Unique Id Or Serial No Of The Scanner?

Sep 20, 2011

In Motorola MC55, I'd like to get the factory or unique id or serial no of the scanner. How to code it in vb.net?

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Using Serial Port Scanner On Multiple Forms?

Aug 26, 2009

Currently the scanner is in a module (code below). I put it at that level because when I had it in a class and instantiated the class from the main form, no other forms except the main form would fire the DataReceived event. Well, unfortunately that's the case for the module-level as well.Here's the code for the Scanner:

Code:
Imports System.Threading
Imports System.IO.Ports

[code]......

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Communications :: Serial Port Input For Barcode Scanner?

Nov 11, 2008

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?

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Read Barcode Using A Scanner Through A Serial Input(com1)

May 10, 2010

I'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]....

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Reading Data From Serial Port For Barcode Scanner

Aug 28, 2009

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]...

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Getting Unique ID From Hardware Serial Numbers (DLL)?

Jun 13, 2010

I just found this amazing DLL that can extract the hardware ID (computer RAM, hard drive unique serial number, partition serial number, CPU unique serial number, etc) of a computer.

However, there is no documentation for VB users and it is written in Pascal and assembly language. Ya, sad

connect to this DLL?The documentation says that the DLL exports the following functions:

[Code]...

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Serial Port Barcode Scanner Delegate Sub Firing Twice Per Barcode Scan?

Aug 2, 2010

I 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

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Create A Fixed-length Unique String From Another Unique Numerical Value That Is Too Long?

Feb 13, 2012

I am using VB .Net to access the eBay API and store all completed orders in a database. This database is then fed into a proprietary shipping system, which can not handle an order number larger than 20 characters. eBay returns an order number like so 230407279314-680141236013 which is too long. The order number is always 12 numbers a hyphen and 12 more numbers. What I need to do, is turn this (the result can be alpha numerical) into a shorter, unique order key to store in my database alongside the true orderId (so that this can be referenced by the shipping software instead of the actual order number). The reason for the 20 character limit is the barcode algorithm used. Is there any way to achieve this in VB .Net 2010? This number can be anything unique, so long as it does not exist already (even a good uniqueid function would work, but I would have to query the database to make sure it isn't taken)

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[2008] Datagridview - Duplicate Cell Values [non-unique To Unique By Appending]

Jan 10, 2009

I'm using the datagridview. This is the sample data:

[Code]....

How do I parse through the grid to rename the duplicate values in a particular column (in this example it's the l_name field) into such a format?

[Code]....

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Asp.net - Unique Number For Unique Visitor On Button Click?

Mar 21, 2011

How generate the unique no. 1,2,3 and so on .... on button click of each new user ..

the code mentioned below is a readwrite coding in vb.net ...

but the problem is it generate the same id for different users on button click event... but i want the no. of times button clicked the new ids will be generated

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim FILE_NAME As String = Server.MapPath("counts.vbi")

[Code].....

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Unique Constraint - Columns Currently Not Have Unique Values?

May 8, 2011

Unique constraint - these columns currently doesn't have unique values..?? I have created Unique Constraint with 3 columns. My code works perfectly but once - two users @ same time entered same data and somehow it saved in DB; after that incident. This UniqueConstraint gives me error - These columns currently doesn't have unique values. How can I check if user enters this kind of entry or how can I restrict the Entry?

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Send Link Contains A Unique Identifier And Verify The Unique Identifier In The Login.aspx?

Jan 6, 2012

This my working method to send a email

Sub emailConfirm()
Dim email As String = txtMail.Text
Dim name As String = txtPrenom.Text + txtNom.Text[code]....

note:I want to send Link contains a unique identifier and verify the unique identifier in the login.aspx.I don't know when to do this...I found nothing interesting on the net ...

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Asp.net - When Should The Factory Pattern Be Used

Jun 22, 2009

when should a trigger in your head go off signifying "Aha! I should use the factory pattern here!"? I find these moments will occur with many other design patterns, but never do I stop myself and think about this pattern.

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.net - Implement A Formula Factory?

Jul 3, 2009

First the requirements: By management requirements, I can't use open source code. I need the users to define their own formulas for a project. My users don't know how to code. The formulas need to be saved somehow, and being read later. I need to debug the formulas written, so I need to be able to see and understand them. The formulas used are quite specialized and specific (actuarial formulas). Adding new formulas (functionality) must be done in fast and maintainable way.

[Code].....

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C# - WCF, Channel Factory, And Exceptions?

Feb 2, 2010

Using vs2008, vb.net, C#, fw 3.5

I am consuming my service in my client

Service is hosted in IIS

Client(winforms MDI) is generated using svcutil using /l, /r, /ct, & /n switches

Service and client both use a MyEntities.dll

I am using nettcp with TransportWithMessageCredential. I cache the proxy in the main form

if Membership.ValidateUser(UsernameTextBox.Text, PasswordTextBox.Text)
_proxy = new MyServiceClient
_proxy.ClientCredentials.UserName.UserName = "username"[code].....

Could I subscribe to the _proxy.InnerChannel.Faulted and do that clean up there?

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Handling Task Factory Exceptions?

Apr 18, 2011

I have set up a process to create new tasks to handle file processing. A problem arised where I received and unhandled exception error and just clicking on the continue button, the main process continued to run. Now I also found that within the child task I was having a file conflict error and as the tasks run as separate .exe i was under the impression that everything would have been thread safe. So for the first issue here is the task creation in the main process..GProcess is a complete project on its own consisting of 6 classes. This is added as a class library reference to the main process class form1

Public Class Form1
..Private parser as GProcess.module = new GProcess.module()
dim factory as new taskfactory

[code].....

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Retrieving The COM Class Factory For Component

Feb 22, 2011

I have integrated the innovative gateway (third party payment gateway) into our asp.net ( language vb.net) web application. while doing transation we are getting the following error in server.

Server Error in '/' Application.

Retrieving the COM class factory for component with CLSID {7A1284E2-7E00-46B5-8440-FC28305E6A27} failed due to the following error: 80040154.

But in my localhost am getting the failure transaction without getting any error.

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Syntax Task.Factory.StartNew?

Jun 13, 2011

I am trying to start a new thread in VB.Net and having syntax problems.In C# this is we can do the same task using

var manualResetEvent = new ManualResetEvent(false);
waitHandles.Add(manualResetEvent);
var taskOne = Task.Factory.StartNew(() => new Thread(TaskToRun).Start(manualResetEvent));[code]....

where TaskToRun is a void method with a single object parameter.All online converters generate similar code to this

Dim manualResetEvent = New ManualResetEvent(False)
waitHandles.Add(manualResetEvent)
Dim taskOne = Task.Factory.StartNew(Function() New Thread(AddressOf TaskToRun).Start(manualResetEvent))
taskOne.Wait()

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Use Object Initializers In A Factory Pattern?

Mar 30, 2012

I have written a base class from which I wish to derive several child classes (in this case Windows Form classes), and I'm using a Factory pattern in order to maintain a collection of the child instances, so that a form can only have one instance per primary key value. (sort of a mash-up of Factory and Singleton patterns.)

I'm using the following code in the base form class[code]...

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Access Wcf Service By A Client Using Channel Factory?

May 6, 2011

I tried this one...but its not working.[code]...

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Change This Code To Make The Factory Dynamic?

Feb 12, 2011

How would I change this code to make the factory dynamic. I believe I was close with remoting. I don't want any hardcoding of the factory, nor do I want to have to recompile. The database drives it.

Dim genericRule As Rule
Dim factoryObject As String
factoryObject = _dal.GetFactoryObject(ruleId)

[code]....

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Error 80040154 Retrieving COM Class Factory

Sep 26, 2006

I have a VB.NET application that references a 3rd party Com component. The file is Interop.WINTSRRLIB.dll. My VB.NET application has a project reference to the COM comonent which lives in the directory: C:WaveTracker. The application runs fine. When I sent it to my customer, he installed in on his desktop machine. It runs fine. Then he copied all of the application files (which live in C:WaveTracker) to his laptop. However, on his laptop, he gets the error:

"System.Runtime.InteropServices.COMException (0x80040154). Retrieving the COM class factory for component xxxx failed due to the following error: 80040154" The customer swears he has the .NET 2.0 Framework installed properly on his laptop. Any ideas on how I can get over this problem???

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How To Create Factory Object That Does Not Cause Infinite Loop

Jan 27, 2010

Whenever I try to create a new CD object I get a stack overflow. I want a parameter to be passed into mediaFactory so that it could be determined what type of media is created. Why I might be having problems with this when I do this
"Dim media As CD = New CD()"
Public MustInherit Class MediaFactory
Inherits MediaContext
Implements IMedia
Public Sub New(ByVal typeId As Integer)
[Code] .....

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Sql Server - Provider Factory Command Timeout - How To Set It

Feb 4, 2011

I am having a problem with a SQL server query giving a timeout error. I read about setting the timeout value of the command object but in my DAL, I do not see how to do that. Here is how I create the command object

Public Sub Init()
If ConnString = "" Then
Select Case ConnStringID

[Code]....

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Suppress Obsolete Warning On Factory Method In .net

Apr 30, 2009

Is it possible to prevent compiler warning caused by a static factory method returning an instance of an obsolete class? For example if an instance of an obsolete class (Foo) is created through a static method (Create) a compiler warning is caused by the factory method.

<Obsolete()> _
Public Class Foo
Public Shared Function Create() As Foo

[code]....

In C# the warning could be suppressed using "#pragma warning..." but I don't think that this exists within VB.Net. Migrating to C# is not an option due to business requirements.

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Suppress Obsolete Warning On Factory Method In .net?

Jan 21, 2011

Is it possible to prevent compiler warning caused by a static factory method returning an instance of an obsolete class? For example if an instance of an obsolete class (Foo) is created through a static method (Create) a compiler warning is caused by the factory method.

<Obsolete()> _
Public Class Foo
Public Shared Function Create() As Foo

[code]....

In C# the warning could be suppressed using "#pragma warning..." but I don't think that this exists within VB.Net. Migrating to C# is not an option due to business requirements.

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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.

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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]...

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Find A Good Database (factory) Class With Connectionpooling?

Aug 12, 2009

I found a lot of information about how to make a database factory or how to deal with connection pooling but i nowhere found a complete solution.I have always used my own solutions, but they're not complete i think or could be improved.Are there some good designed classes any of you use that i can find on the net?

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Retrieving COM Class Factory For Component With CLSID. 8000401a

Aug 26, 2011

I created a VB.NET application that takes in parameters from a javascript file, uses those parameters to then retrieve info from a database, then send back to the javascript. When I locally test the webservice however, this is the error message I get:Retrieving the COM class factory for component with CLSID {C2C0AFBE-102A-4A8D-A792-06B4063E863F} failed due to the following error: 8000401a.Everything I've googled on the error says it has something to do with the either a word or excel file... which the process has nothing to do with neither. [code]

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