Loop To Search For Duplicate Numbers Within A Column In A Database?
Nov 28, 2011
i have wrote a loop to search for duplicate numbers within a column in a database which i have got fine but when i find a duplicate i would like to get the all of the row so if 33 was a duplicate i would like to get the following row.
33MarkWhitesideM12/07/1958Michaeluuu
I have tried to do this buy use something i saw on msnd's website:
Dim foundRow() As Data.DataRow = customerDS.Tables("Details").Select("HNCNO Like '33%'")
However if i change the line to notice the i beside the like
Dim foundRow() As Data.DataRow = customerDS.Tables("Details").Select("HNCNO Like 'i%'")
but i get Index was outside the bounds of the array. Ok i know that means that there is nothing in my array. What i would like is to find the duplicate row associated i. you will probably understand me better when you see the code.
Private Sub checkRowsForDups()
Dim customerDS As DataSet
Dim dupArray As New ArrayList
[Code].....
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Feb 4, 2011
I am sending values from Combobox and Textbox to Access Database in VB.NET.I am phasing the problem when i enter the Duplicate values.In the database one of the column is Indexed.(Yes Duplicates not allow)That column i bind to Textbox("txtperson1").I used the TRY and Catche method to solve the Indexed Problem.when i run the application the value which i enter is not a duplicate that value save on the db. Once i enter the Duplicate value , the message box is showing "The Record alread saved".But After i enter the new value the same message is displaying, it is not saving on the db.
[Code]...
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Oct 6, 2011
The program must generate 6 unique random numbers but when I click display numbers sometimes it gives me 6 unique numbers and sometimes I get duplicate numbers. I will add the code I have so far.
Public Class frmMain
Private Sub btnExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click
[CODE]...
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Apr 20, 2008
Scenero: Users inputs the barcode numbers into a textbox, hits the search button and is returned the description of that barcode.
Database:
Two fields: Barcode - barcodes in this field
Description - Description revalant to that barcode
Form:
Consists: Textbox(Input) - txtBarcode
Button(Process) -btnClick
Listbox(Outut) - lstDetails
Code:
Dim con As New OleDb.OleDbConnection
Dim ds As New DataSet
Dim da As OleDb.OleDbDataAdapter
[CODE]...
This is the code i got to connect to the database itself. Then i got this code for the search part
Code:
SQL = "SELECT Description FROM Table1 where Barcode = '" & txtBarcode.text & "'"
What i need to know is:
1) Is the code for the search right.
2) How to get it so the description for that barcode is displayed in a listbox.
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Dec 3, 2010
Means if i have two columns in database namely name & email i wanna search the users or email by entering either name or email on textbox then after clicking the search button record will be displayed in gridview ?can anybody tell me the select query for this ?
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Dec 8, 2011
I'm trying to add a string to a access database, for a column that was originally designed for numbers, i have changed the data type under the design view from number to text, yet I still get a error saying that it cannot convert the string expected int32
Input string was not in a correct format.Couldn't store in Parent_ID Column. Expected type is Int32.This is the full exception, i would have put it into code display but the option wasn't there
System.ArgumentException was unhandled
Message=Input string was not in a correct format.Couldn't store <A-238> in Parent_ID Column. Expected type is Int32.
Source=System.Data
StackTrace:
[code]....
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Nov 30, 2010
This is my programs complete code, the only problem is i want to fix the amount of decimal places that show up in my gridview. The problem is if i do this on the asp side the location of the column gets thrown off and the column is duplicated. I figured if i just remade the table on the asp side it would work only problem is if i remove the sql for that particular column the asp side column cannot get data.
Imports System.Data.Sql
Imports System.Data.SqlClient
Imports System.Data
[Code]....
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Nov 22, 2009
I'm using SQL as a database in VB 2010, I already add a table to my form as a datagrid view but I don't know how to add buttons for filtering, deleting and adding things in my table, for example I want to have one button on my form call it search button to search in table names or Phone Numbers. how can I do that and where shall I write the code?
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Oct 5, 2011
how to use a Dim numbers() As Integer thats bout it here is my problem that iam facing :Use a one-dimensional array to solve the following problem: Read in 20 numbers, each of which is between 10 and 100, inclusive. As Each number is read, print it only if it is not a duplicate of a number already read. provide the "worst case" (in which all 20 numbers are different). use the smallest possible array to solve this problem.
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Mar 7, 2012
I have a code that generates random code using a set of letters. One for a random pin and another for a random code. I can loop the generation of my codes depending on the input. When I try to generate 1 to 3 set of codes it works fine. but if it's 4 and above. I always get a duplicate set of random numbers. I don't what wrong. My code for generating my codes are in vb.net and be passed to a stored procedure for inventory.
Button event:
Protected Sub genCodeBtn_Click(sender As Object, e As EventArgs) Handles genCodeBtn.Click
connection = accDB.databaseConnect()
[code]....
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Nov 25, 2011
So basically I'm making a BINGO game on vb 2008 and i have a "call number" button. The letter and numbers get added to a list box each time. But i do not want the same number to be called. Is there a way that the program can read the items in the list box and not generate (Randomly) the same value again to be displayed in the label.This is what i have:
Callnum = Int(75 * Rnd() + 1)
lstNumbersCalled.Items.Add(lblCallLetter.Text & " " & Callnum)
[code].....
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Sep 22, 2009
I am having trouble in finding duplicate numbers in an array.the first one is to create an array with duplicates and then display the number that has been duplicated and how many times it has been duplicated.
Here is my uncompleted code:
Dim arry(4) As Double
arry(0) = 4
arry(1) = 44
[code]....
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Jun 9, 2011
label10 displays which is the highest number
label12 displays which is the lowest number
label14 displays which is the number that is duplicated
My codes don't run 100% correct.:'(
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Label6.Text = Val(TextBox1.Text)
Label7.Text = Val(TextBox2.Text)
Label8.Text = Val(TextBox3.Text)
[Code] .....
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Mar 9, 2010
Get Random value with no duplicate
[Code]...
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Jun 10, 2011
I have been working on a pythagorean theorem calculator and am actually stuck on the final bit of code. What I am trying to do is check the values (integers) inside a listbox, remove duplicate number (both values), and input one of the values into a textbox.
Here is an example of what I am doing:
LISTBOX VALUES
2
2
3
[code]....
When the program runs, check listbox value #1 and listbox value #2, if listbox value #1 and #2 match (2 & 2), input that value (not both duplicates) into a variable, remove both of the duplicate values, continue checking the rest of the values, and finally multiply the leftover values. I am sure that sounds confusing. Here is what the final output will look like
LISTBOX VALUES
3
7
[code]....
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Apr 6, 2011
In first search, result will show.In second search, the result in first searching will also show with the result in second searching. [code]
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Nov 24, 2011
how to eliminate duplicate random numbers displayed in labels ( a column of 5 labels). This is for a BINGO game i am doing. I have tried a Do .. Loop until structure with a for next but i am not sure how to proceed:
Do
For NumB = 0 To 4
B(NumB) = Int(15 * Rnd() + 1)
itemarrayB(NumB).Text = B(NumB)
Next
Loop Until
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Feb 9, 2012
How can I check an array for duplicate random numbers and replace the duplicates with new random numbers?[code]...
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Sep 9, 2011
I have this project that let user inputs 5 different numbers from 1 to 50. But I want to validate it before saving to DB that i will be 5 unique numbers.
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Nov 25, 2011
I am making a Bingo game. I have a button which keeps on calling numbers which are then added to a list box. How do i make it that the numbers called don't repeat (get displayed in the "number called" label). Is there a way to use items already added in the list box to eliminate duplicate numbers.
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Mar 7, 2009
I'd like to create a loop that dupliates a label I've made and put it all over the screen. Example of what it would look like.
For i = 0 to 52
originalLabel.duplicate ("duplicatedLabel" & i)
next i
So later I could go through all of them...
For i = 0 to 52
//... some logic to determine color... then assign it somehow
duplicatedLabel & i.backColor = Color.red
next i
[code].....
I can do that in Flash/Actionscript but dunno how to do it in VB and I can't find it anywhere.
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Jun 26, 2010
I'm building a code editor app in VB.NET (Framework 4.0) and it opens all ".por" files into individual forms consisting of a MenuBar and TextBox (multi-line).Currently I have 20 forms (all duplicates of the first on I designed) and if there are say 4 ".por" files in a directory, the first four will open up while the others hide.
I think it would be far more efficient by coding a new form For each item in form1's ListView...but I want the next so many to be a copy of the first form I designed since I spent a good bit on it.
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Dec 15, 2009
I have a datagridview with 2 columns, 1 is Batch_Number and another is Existing_Stock, there is about 6000 rows.My question is, I want to be able to write in a TextBox and hit a Search Button to search the Batch_Number column and filter out or highlight the row with the matching number to see the Existing_Stock
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May 26, 2009
I'm in a bit of a quandry. I am trying to build a simple search form where the user selects the column title and in puts the criteria then clicks the search button. This is the code I am using
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
details = ComboBox2.Text
'column name selected by user
specifics = TextBox1.Text
'criteria input by user
[Code]...
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Feb 3, 2010
Private Sub CenterSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCenterSearch.Click 'Center name is required. If it not there, ask for it.
[Code]...
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Feb 13, 2012
It seems that on clicking datagridview column header, the column will be automatically sorted based on the column type. I have a column showing some numbers. If column type is string, it sorts "1","20","3" into "1","20","3". If column type is double, it sorts into "1","3","20" which is the result that I want. However, there might be some erros in the numbers and error messages(text) will show in the cell instead of numbers. So I cannot set the column type as double. I want to ignore these error messages and sort all the numbers. How can I do this?
Also, I need to add some background colors to different rows in datagridview. So in the column header click event, I call the bkgColor Sub to achieve this. My question is that how can I override the sorting method in this event?
Private Sub DataGridView1_ColumnHeaderMouseClick(sender As Object, e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles DataGridView1.ColumnHeaderMouseClick
Try
[code]....
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Aug 21, 2009
Basically what happens is each time it loops through it adds a number to the end of the string, and by the end I should end up with an array full of string in a format like "111 222 333 444 555 666" but I end up getting strings like this "111 111 222 222 333 333". The weird thing is, if I add a message box in every loop it works fine, but obviously I don't want a message box pooping up every time it loops through. What is causing this and how might I fix it
The code is:
For x As Integer = 0 To (NumCards.Value - 1)
NumRep = 0
[code].....
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Mar 23, 2011
I have a program and I get time data from a sqldb and display it in a column in a listbox. What are the proper steps for adding the time as I iterate through the data in the column? I figure I will need to do some conversions on the time to be able to add it and display it as a total.
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Jun 30, 2011
i am checking for if the column code is Null or not in that same i wnat to check whether the column has any of the duplicate values then i should mark as isGoodRecord = 2,
If (IsDBNull(Row.Code) Or Row.Code = String.Empty) Then
Row.IsGoodRecord = 2
ErrorDesc += "Code is blank;"
end if
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Jun 7, 2011
I have a program that reads a 3rd party .txt file using OleDB into a DataTable When it reads it, its creating a column alias name, and works fine.
gives the user the ability to save a record to the .txt file by using an OleDb command statement and inserting a record into the DataTable then I re-write the file using stream writer because my understanding is you can NOT write directly into the .txt file.
I have created the program to read column postion rather then name since some data providers call columns different names, but I havent encountered a provider using the same name for 2 different columns.
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