Making Bar-code System In 2008?
Dec 3, 2010
I have made some real time systems (softwares). Now I want to make an system (software) in vb.net 2008 which reads an bar-code saves the data in the database (SQL Server database). I am very new in making these types of system, thus i would like your help of making an system using bar-code scanner through vb.net 2008. Specific to my question I will require all the steps for creating an bar-code system through vb.net 2008. I am waiting for your reply.
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Oct 11, 2010
I have making login system using with php. Now I want to hide the link by using strongest MD5 hash, but the one I have got is uncrackable. I want to decrypt them in the runtime, but I couldn't.
Here's the
Public Class Form1
Function MD5Hash(ByVal strToHash As String) As String
Dim md5Obj As New Security.Cryptography.MD5CryptoServiceProvider
Dim bytes() As Byte = System.Text.Encoding.ASCII.GetBytes(strToHash)
bytes = md5Obj.ComputeHash(bytes)
[Code] .....
The GetMD5Hash's method is using for to decrypt the MD5 hash to turns into the actual strings and MD5Hash's method is using for encrypt the strings into md5... However, the connection strings can be sniff the packets sent out. How to decrypt the MD5 hash and how to blocked the connection strings in the packets sent out??
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Oct 20, 2010
I was thinking of making a anti-file duplication system for my PC. I feel that i have a lot file duplicates so finding them would be nice.
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Aug 9, 2009
I am using a rich text box and I know a simple way to change the color of a selected word...but I can't make it do it for all the words.Do I need a custom control for this sort of thing...?Also, example: word "If" becomes blue, and all If's in the RTB would be blue.
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May 7, 2009
I downloaded this code from the web that Wierddemon gave me in my previous thread. This solution contains 2 projects (CurrencyControlTest and CurrencyTextBox) There are some things that I don't understand:
1. What's the type of form1.vb and program.vb in the CurrencyControlTest Project? Are they classes, or windows Forms or module?
2. This is the code in Program.vb
Imports Microsoft.VisualBasic
Imports System
Imports System.Collections.Generic
[CODE]...
What's the effect of <STAThread> code?
3. What is exactly the "Namespace" doing in this code? because when I removed the namespace, An error indicating that Form1 is not declared appeared. What is namespace? what does it do? Can anyone give sample code to emphasize the function and how and when to use the keyword "Namespace"?
4. This is code for Form1 in CurrencyControlTest Project
Imports Microsoft.VisualBasic
Imports System
Imports System.Collections.Generic
[CODE]...
What's with the "public partial class Form1"? what does "partial" do? When i right-clicked on the InitializeComponent(), A portion of code appeared suddenly with the header #Region. What is this? and when re-open the Form1 in "View Code" mode, they're gone.
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Apr 16, 2011
i can always get the first word to translate but the other words jumble together and sometimes repeat themselves. The rules for this program are as follows: To translate an English word into a pig Latin word, place the first letter of the English word (if it is not a vowel) at the end of the English word and add the letters ay. If the first letter of the English word is a vowel, place it at the end of the word and add Using this method, the word jump become umpjay, the word the becomes hetay and the word ace becomes ceay. Blanks between words remain blanks. So far this is what I've got:
[Code]....
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Sep 12, 2010
I know that my question is very strange but please , I want an answer I want to make a simple GUI and 32-bit operating system with file manager , clock , calculator , image viewer and notepad (media player if available ) .
[Code]...
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Mar 11, 2012
I'm doing an airline reservation system program, but I can't wrap my head around it. I can't even come up with psuedocode. The airplane has 10 seats. The user needs to choose first class(seats 1-5) or economy(seats 6-10), and I need to make sure that no seat is sold to more than one person. And if there are no more seat in the selected class I need to display a message box "there are no more seats in the selected class. Would you like to switch classes?" else display message " next flight leaves in three hours".
I have more code now!:
Public Sub btnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
Dim firstClass() As Integer = {1, 2, 3, 4, 5}
Dim economyClass() As Integer = {6, 7, 8, 9, 10}
[code].....
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Oct 11, 2010
I have making login system using with php. Now I want to hide the link by using strongest MD5 hash, but the one I have got is uncrackable. I want to decrypt them in the runtime, but I couldn't
Public Class Form1
Function MD5Hash(ByVal strToHash As String) As String
Dim md5Obj As New Security.Cryptography.MD5CryptoServiceProvider
[code].....
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Feb 12, 2009
I'm about to start a new project, its a Payroll System, I'll be using VS 2008 and my dbase is MS SQL Server 2k5.I just want have some tips for this kind of project.
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Jul 7, 2012
We have two systems, one is created in VB.Net 2003 and the other is created in VB6. Both systems are client/server desktop application system. There is a requirement that we need to send and response data to each systems. The data will come as result of process of each system and then transfer it to the other system. These is formatted in a message format. Is it likely to become socket programming? how can I send and response data between servers?
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Aug 15, 2011
we're working on a billing systemCurrently I am working on the categories module. Here's the thing:I need a dynamically changing UI. So the user can add categories, delete them and teh UI would accordingly add or remove controls automatically.I used DataGridView, but since the fetching and storing of data will not be done in a database, I need to fetch it and update it using an HTTP API, the data bindings are causing problems as I need to update, Insert or delete data using functions instead of letting VB do the hard work. I tried creating a datatable and checking for changes everytime user added/deleted/changed a row, but again the problem is: in a datatable I am not able select what type of control represents the column. For Example I have a parent category column where the control needs to be a combo box. The datatable's columns don't seem to provide an option and are automatically set to text box.I am thinking there is a really cool way of doing this that I am unaware of. all the VB.NET books I have read only seem to use DataGridView in conjunction with some sort of a database and not independantly.
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Feb 25, 2010
what control should i use in making a room mapping system? i just cant figure out what controls i should use. i plan to use the datagrid but i don't know how to fill the color of cell.
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Jul 13, 2010
I have a windows service written in .NET 2.0 that will run every 5 minutes and executes bunch oracle SQL/PLSQL scripts based on time/validation, it throws the above said error some times against some SQLs, the same SQLs run fine at later point without any error, I have no idea what is going on with the app. I am not sure if this has any thing to do with oracle connection pool as I am properly closing the connections after every SQL execution.
Exception:
System.Exception: Unexpected return code: 1 at System.Data.OracleClient.DBObjectPool.GetObject(Object owningObject, Boolean& isInTransaction) at System.Data.OracleClient.OracleConnectionPoolManager.GetPooledConnection(String encryptedConnectionString,
[CODE]............................
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Feb 28, 2010
i m usingin vb.net hw can i call system calculator thought code
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Jun 22, 2010
I am a student of PGDCA. making a project of LIBRARY MANAGEMENT SYSTEM IN VB.NET 2005 VERSION.
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Jan 31, 2011
I am making program that will show Original system install date and calculate how old is system...How can I code that in VB 2010?
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Apr 22, 2012
I'm making a rating system for people to rate things in a listbox. I've setup so the stars get saved using my.settings, but how would I make it so it gets stored into a database, and it checks to see if they already rated.
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Sep 5, 2008
I am making a popup program for something, so I added a listbox and such, and I need to know how to go about making the system pull items off the listbox randomly and launch them in the web browser.
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Feb 15, 2010
Im having trouble with making a code for a hotkey.Im making a small program for a game. The program will run in the background, when your playing the game in either window mode or fullscreen. Then when you press "1" etc. ingame, i want a short beep to come 20 seconds later. I also need to be able to start the tool and stop the tool so its only active when you want.
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Dec 4, 2011
i was able to create my first db which i would like to use at our office. Its a counter transaction ticketing system. Finding my way through the different code, i was able to came up with these one.
Public Class Form1
Dim iTicket As Integer
Function getTicket()[code]....
But the thing is, even if i google the steps on how to print and even ask other friend how to do it, iam having a hard time making code for printing. Would it be to much if i ask you friends to give me an idea or a sample what code should i put for me to able to finish this project?
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Dec 4, 2011
Well I recently found a code for making a file spliter, the code is simple (of course need some modification) and it work great.
The code is like this:
Dim iFileSize As Int32
iFileSize = textbox_size.text
Dim SplitFileStream As System.IO.FileStream
[CODE]...
The only problem is understanding the logic of the code. How can it work? How can it know the next time of bytes to write is 200 to 400 if the split size is 200?
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Aug 1, 2009
im making a basic program, The relevant code is
SendKeys.Send("0000")
SendKeys.Send("{ENTER}")
Threading.Thread.Sleep(500)
but, i need to make it go from 0000 to 9999. but i don't wanna do 9999*3 lines of code. i need help. i got no idea about how to do this, i was trying to make my own program there would generrate the code for me, but did pretty much crash... so...
SendKeys.Send("0000")
SendKeys.Send("{ENTER}")
Threading.Thread.Sleep(500)
[code]......
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Jan 13, 2010
How do I make my WebBrowser one do this code?
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Oct 31, 2010
show me the VB code behind making a Timer?
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Nov 3, 2009
I've got a basic VB.net 2.0 application together in VisualStudio 2005. Within a form, I've tied [enter] in several text boxes to a button. What I'd like to do is "press" the button from getField_KeyDown() to give the user a visual indication of what's happening.With the code below, the button click work is done but the button's look doesn't change and the user is left without feedback.
Private Sub getField_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles txtGetKey.KeyDown
If e.KeyCode = Keys.Enter Then
e.Handled = True
Call btnGet.PerformClick()
End If
End Sub
How can I make the button looked pressed while the btnGet.PerformClick() work is being done?
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Oct 26, 2009
I'm developing a Windows Service, but for some reason, the changes I'm making to my code file aren't taking effect. I clean, build, and rebuild the solution as well as all the files that I'm changing, but nothing's happening.Is this a problem with the installation of the service, or something wrong with my IDE? I just now thought that maybe I shouldn't be rebuilding the files...
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Mar 23, 2012
i'm trying to make a simple email sender and the problem is that during the sending process my application freezes, therefore my progress bar also freezes so is there anyway i can try to make application not to freeze?
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Sep 20, 2009
I'm making a HTML Editor. There are uttons in a toolbox they can click and it will add that HTML code. I don't know how to make it add the code to wherever the little falshing line is in the textbox.
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Aug 21, 2009
okay so i was thinking of making a program that can take a text file filled with code so the text file would look like this
Title{Text = blah blah; text = blah blah; Title2{Text = blah blah blah; text = blah blah blah;} }
and have the program display
Title
Text = blah blah
text = blah blah
Title2
[code]...
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