Duplicate Entry Ƈ' For Key 1?
Jun 21, 2010
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)
[code]....
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.
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Nov 12, 2010
I want to make a very simple program that remove duplicate domain name from a txt file. First, it must have a Open file Button so that it can load list of url to Listbox.
So, the URLs will be loaded into listbox. Then It has 2 more button Start and Save button Lastly one counter to calculate how many URL in that listbox
So example.. let say I have a txt file which contains URLs
[URL]
I open this txt file and loaded it into listbox (can scroll)
Then when I press start button, it will delete the URL that has same domain name. so the output will look like this
[URL]
Then I can save the URL from listbox to my disc drive as text file
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Aug 2, 2010
How Can i prevent duplicate record entry in vb.net.
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Jun 14, 2008
I need help on improving the performance of a program I wrote some time back. This is the main performance issue of the program below. Basically I need to look through some data that is displayed to a user in a list view and determine if the data is a duplicate of any other data in the list. If it is I need to delete the duplicate before my program continues.The below code does the job just fine, however the list view of data has approximately 30,000 rows of data. Hence looping this list 30,000 to the power 30,000 times makes the program very slow. Note subItem(4) in the data is the "unique" identifier that I later discovered was not so unique....
This was a work around function implemented in the code back when I wrote it (not meant to be permanent). I know that listView is not Ideal to store this much data.how to store the data in a more efficient manner or improve the performance of the Search and Delete [code].....
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Mar 22, 2012
I am trying to create the code which will stop duplicate entry of an Account Number being entered in the column 'Account Number'. The user is to input an account number (three digit account number i.e 153) using an input box and this will then be printed into the A column.What is the best way to prevent duplicate account numbers being entered?
The code I have for the input/account number array so far is:
[Code]...
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Jun 5, 2009
I am trying to create a small form that will duplicate a users entry for them.On my form i have a text box and two CheckListBox controls and a button. The user should be able enter a value into the text box, and select multiple items from both CheckedListBoxes, when they click the submit button the details will be added to a DataGridView below.
This is an example,The user enters the value Audi A4 into the textbox.
The First Checked Lsit Box is called "Colour" and from the options the user checks 'Red' and 'Blue'.
The second Checked List Box is called "Number of Doors" and from the options the user checks '3' and '5'.
When the User clicks the submit button 4 rows will be added to the DataGridView with all the different combinations, as shown below:
Model Colour No# of Doors
Audi A4 Red 3
Audi A4 Red 5
Audi A4 Blue 3
Audi A4 Blue 5
I am currently using this to populate the DataGridView:
[Code]...
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Feb 2, 2011
I am working on DataEntry Forms in VB.NET There are two controls are having in a present window. One is Combobox and one is Textbox. Combobox values are Mobile, FAX, E-mail. By the mistake some one enter the values like , In the combobox-E-mail and in the Textbox-9987453434. Finally these are saved on the Database. But i want to Re Enter the values.
For this i was selected in the Combobox-Mobile and in the Textbox-9987453434. These are the right values i want to save on the database.
But here the problem is that Phone number column(Textbox) is Indexed. (Unique) or No Duplicates in the database. Now i want to update only one column which is coming from Combobox in the database.
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Jul 27, 2010
When user inserts a duplicate entry in a unique field, Castle ActiveRecord throws the following exception:
Castle.ActiveRecord.Framework.ActiveRecordException was unhandled
Message="Could not perform Save for SerieNotaFiscal"
Source="Castle.ActiveRecord"
StackTrace:
[Code] .....
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Sep 8, 2009
i 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.
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Nov 4, 2011
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.
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Jul 10, 2009
I 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).
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Jul 11, 2009
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).
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Mar 17, 2011
I have this data in txt file and the data keeps changing all the time.
[code]...
I would like to read all lines and compare, if the same name and same address is found, which is in the [......], then i need to count it and show the most frequent buyer!should i read it all and put in array, and compare and put the duplicate data and count into another array?
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Mar 27, 2012
I have a List object and I want to remove the duplicated items but leaving at least one of the duplicated items in the list;I wrote something like this however I would optimize this code for better performance, is there something faster?
Const chars As String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
Dim rnd As New Random()
Dim mylist As List(Of String) = Enumerable.Range(1, 100).Select(Function(i)
[code].....
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Feb 1, 2010
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
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Mar 12, 2012
Public 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]...
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Jun 21, 2010
I'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]...
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Oct 13, 2011
I 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
[Code].....
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Mar 4, 2010
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.
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Mar 25, 2009
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")
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Jun 16, 2011
In 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).
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Feb 15, 2012
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
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Feb 27, 2010
I use this code in which i want different value of i (no duplicate). . but this code return some duplicate value of [code]...
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Jan 12, 2012
I have one table [cusorder] has these fields {customerid,orderid,.......}I want to select some all rows but no dublicate in customer id for example customerid will come more than 100 times with diffrent orderid i need to show it only one with any orderid
[code]...
i try to use select distinct but does not work
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Sep 21, 2010
i have this sql table
Table name: Project
Fields: PrjCode, PrjName
i want to save my Project codes and name to this table, but before i will save the data from my form i want to check if the user input (PrjCode) already exist in the database. and if the prjcode exist it should not allow to save the entry since it will duplicate. (NOTE: ProjctCode is not auto number. the user will input it)
base on this scenario have this code
If PrjCodeTextBox.Text = "" Or PrjNameTextBox.Text = "" Then
MessageBox.Show("Please Complete the information required!", "System Message", MessageBoxButtons.OK, MessageBoxIcon.Error)
[Code].....
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Feb 14, 2011
I 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.
[Code]...
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Jun 28, 2011
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?
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Sep 7, 2010
im 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
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Dec 6, 2011
this is the event table that records all the status(IN/OUT):
[Code]...
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.
[Code]...
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Nov 14, 2009
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
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