I've produced an IP Entry box with similarities to the one Windows uses when setting addresses.It seems to work (I say seems),th the setting of text.I have code that checks the entry of text so this seems fine, but when text is being set through code, it allows anything and i'm unsure on how to make it only allow numbers and numbers between 0 and 255.
View 5 RepliesI have a form that successfully captures data, but I want to limit the the amount of entries by a user based on their email address. I am using SQL Server and VB.NET and would like to be able to check against the database, and if your email addess is in the system, popp up a message that says, "Sorry, you have already entered the system with that email address".
View 2 Repliesi am pulling together a cash register that will allow both bar code product entry and manual key entry.imagine if you have a tin of beans in front of you, in a small corner shop they would probably type "47" and then hit "Produce". Fairly straight forward as I have the button Produce to act upon my code and update my salestrans.mdb but,if you scan the bar code I want the same form to handle both 'real' actions, (i assume that keyboard emulation barcode scanner includes "ENTER" after providing 13 digits)....
Q. in perhaps a long winded way i want to know how to kick off an event based on the "ENTER" key being activiated by the barcode scanner)?i do not want to have to hit any buttons if i am scanning bar codes.
What is the code for ignoring the case of an entry while checking to see if the entry is correct or not... (i.e. in a flashcard program... given definition, asks for the name) I don't want the case of a character to affect whether the answer is correct or not.
View 2 RepliesI am trying to make a program with a bar code reader for the first time. I am programming with VB 2005. I want to differentiate a bar code entry to keyboard entry. My questions:
1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).
I am trying to make a program with a bar code reader for the first time. I want to differentiate a bar code entry to keyboard entry. My questions: 1. Does bar code reader generate a keydown (or keypress) event for each of the digits of the entry? For example, if the barcode read: 1234567890, does that mean that there will be 10 keydown (or keypress) events for that single barcode that was read?
2. I have read from the posts that the best way to differentiating keyboard vs bar code input is to analyse the time between keystroke (for less than certain number of milliseconds).
Are there any IP Address filters or masks available in Windows Forms as per following screenshot? A backslash shouldn't be allowed or it should be filtered somehow.
View 1 RepliesSocketException was Unhandled: Only one usage of each socket address (protocol/network address/port) is normally permitted I get this error every time i click collect a second time.
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Can anyone point me to some code which can help obtain the network address from the host IP and subnet mask?
View 3 RepliesI made web browser which consist address bar that I use it to type addressess in it i.ewhen I type [URL] it opens [URL] but when I go to anther page in google it doesnot show it's link in address bar lix InterntExplorer or other international browsers so how to show any link or any sub page's link in my browser address bar ?
View 1 RepliesI'm trying to use the DHCP API (using the references on pinvoke.net) to retrieve a computer's MAC address when given the IP address but I can't get the code to work. I've run all the C# code on pinvoke.net through the C#-to-VB converter but I'm stuck now.
Here's what I have so far. The value of res is always 5 (should be 0). Thing is, I can't find any documentation on what the return codes mean
vb
Private Sub GetMACDim client As String = "1.1.1.1" Dim server As String = "0.0.0.0" Dim si As New NativeMethods.DHCP_SEARCH_INFO si.SearchType = NativeMethods.DHCP_SEARCH_INFO_TYPE.DhcpClientIpAddress si.ClientIpAddress = Convert.ToUInt32(StringIPAddressToUint32(client)) Dim res As UInteger Dim oInfo As IntPtr
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' Use Your work Group WinNT://&&&&(Work Group Name) Dim DomainEntry As New DirectoryEntry("WinNT://Wokgroup") DomainEntry.Children.SchemaFilte
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In member register page, I added email address validation but it only check the email address format, such as .com, .net, .org.If user inputs fake account such as aaabbb01010@gmail.com, how to verify it and return an error?
View 2 Replieshow to assign a static ip address and dns adress by VB2008?
I search in MSDN,use system.net.ipaddress??or something else?
does anyone know how to get a computer's mac address with an IP address?
View 25 Replieswhere i put the *'s i get the error "The parameter 'address' cannot be an empty string. Parameter name: address".
Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick
Dim mail As New MailMessage()
Dim SmtpServer As New SmtpClient
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I am using sql for this, I would like to know How I can allow only one entry (in the database) per day for each user ID
View 18 RepliesPublic Declare Auto Function SQLConfigDataSource Lib "ODBCCP32.DLL" _(ByVal hwndParent As Integer, ByVal fRequest As Integer, ByVal lpszDriver As String, ByVal lpszAttributes As String) As Integer[code]...
View 2 RepliesI'm doing a project where I need to have people register by entering a username and password. When they click register I want them to be added to the database, but I'm having trouble doing this. Can anyone help? This is my first time using VB.[code]...
View 2 RepliesI have an XML below like this and I want to add in another entry to it:
<?xml version="1.0" encoding="utf-8"?>
<CampaignRewardsVoucher>
<VoucherCode>Vouch001</VoucherCode>
<Quantity>3</Quantity>
</CampaignRewardsVoucher>
I have the above xml but I want to add Vouch002 after Vouch001:
<VoucherCode>Vouch002</VoucherCode>
<Quantity>3</Quantity>
</CampaignRewardsVoucher>
I have the code below which checks if an input is a duplicate and update accordingly, if not I want to create a new Vouch002 entry
'Create XmlWriterSettings
Dim settings As XmlWriterSettings = New XmlWriterSettings()
settings.Indent = True
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I Use visual Basic 8.0 and Mysql 5.0 I have two exactly the same Tables:
Table1:
RecordID , Integer = primary key auto_increment NOT NULL
Articlenr , Integer
Articlename, Char(20)
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I want to add all the records from table1 to table2. I want to do this 10 times if I execute the following statement: INSERT into Table2 SELECT * FROM Table1 ; Everything works perfectly. The two records are added to table2 But if I execute the stament a second time get the following message: Duplicate entry '1' for key 1 I now i must do something with "duplicate key update" in the Insert statement.
i know it might be impossible to achieve (as i've been reading from another articles) but does anyone know how to set a dll entry point in VB.net project? I have created a VB.net dll and trying to call that dll from cobol (unmanaged code). in Cobol, i can only use the entry point statement to call VB.net dll (cannot add reference to it). as consequence, i'm getting "called program not found" (or in VB error is equal to "can't find dll entry point")
View 2 RepliesIn my program I need to test whether an entry is available I ue the following code:
If Not (westTF(Me.K) < 0) Then
If westTF(Me.K) Then
Exit Sub
End If
End If
This does not function, but when I remove the outer IF it is OK. ( I need to test otherwise an error is generated when West is exhausted).
This is my Vb.net Project for company i want to generate code for each individual slip so that i get one field as unique field for that i want to use date & slip no to generate unique key. i have attached screen shot my project in this date 21/12/2011 & slip no is 12 now i want to generate unique number as 21121112 (i.e 21/12/2011 as 211211 & slip no is 12 appended at the end)if u have code then attach with your solution
View 3 RepliesI am trying to update a few entries in a access database through VB.NET. With the code I used below could anyone help me out and show me where I made a mistake because it is creating new database entries instead of updating them.
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I have a form with textboxes for entering data. One of the textboxes is for entering a value that is always one character. How can I make the cursor automatically jump to the next control when a character has been entered? I'm thinking the key press and release event and then set focus but is there a better way?
View 3 Repliesim currently working on a project for a warranty company. I need to be able to attach pdf files using a browse button that will save them to the file, so that later if the contract is reviewed we can pull of the scan of the contract without say having
View 3 Repliesthis is the event table that records all the status(IN/OUT):
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So am making a sign in-out program using vb.net and mysql. i was wondering if theres a code i can put in somewhere that will be like if a user opens the application he/she must signin before they can signout and if they open the application and they've already signed in, they cant signin again they must signout before they can sign out again.
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I am trying to create a data entry wpf form and I am getting the following error when trying to create a window1 loaded event: "table name table adapter is not a member of file name.new data connection set table adapter.table adapter manager" I understand the error message and checked all my names but to no avail. Below is my class statement and window 1 loaded event:Private data connection as new data connection setprivate tatable as new data connection set table adapter.table name table adapterprivate tamanager as new data connection set table adapter.table adapter managerprivate view as collectionvie
View 1 RepliesHow can you add a system DSN with its security credentials programmatically at runtime from VB.NET? Keeping key in ODBC.INI is done, but when creating ODBC, it asks for Authentication Type (SQL or Network Login).How can we set that option at runtime?
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