i want to compare the two data table columns and find duplicates for example
dataTable1
autoid ponbr polinenbr quantity
1 0001 10 5
2 0002 12 6
[code]....
in the above two dataTable i would like to compare the ponbr and polinenbr column and find the duplicates and get the autoid..
My application is in VS2008 coded in vb.net.I have a table with three columns FromDate,Todate and Schedule.FromDate and ToDate will have date values whereas Schedule will have a any of these values(weekly,Monthly,Yearly) In my Form i have given some provision to the user to check the records.
My requirement is The currentdate that is Today's date should be compared with the values of Fromdate and ToDate.First it should be check whether Schedule value is Weekly or Monthly or Yearly.If it is weekly than it should check the record in between fromDate to ToDate with a increment of one week.That means it should first check the first value of fromDate than add 7 days to the value and then again check from fromDate and this should continue till it reaches Todate.
[Code]...
My application is in VS2008 coded in vb.net.I have a table with three columns.FromDate,Todate and Schedule.FromDate and ToDate will have date values whereas Schedule will have a any of these values(weekly,Monthly,Yearly)
In my Form i have given some provision to the user to check the records.My requirement is The currentdate that is Today's date should be compared with the values of Fromdate and ToDate.First it should be check whether Schedule value is Weekly or Monthly or Yearly.If it is weekly than it should check the record in between fromDate to ToDate with a increment of one week.That means it should first check the first value of fromDate than add 7 days to the value and then again check from fromDate and this should continue till it reaches Todate.
[Code]...
Consider my data table
ID Name
1 AAA
2 BBB
[code]....
Final Output is
2 BBB
3 CCC
4 DDD
How can i remove the rows in the data table using Vb.Net
I'm using VB.net 2005. I have working programs that I populate DataGridViews with something like the following:
[Code]...
i want to create a table that include a current year data and as well as previous data to be compare. here is the example of the table that i want to create: but i want to compare one of the annual data with the previous year. as example i want to compare between the data of current AR of 2007 with the current AR for 2006, Current AR of 2006 with current AR for 2005 and go on~, but i have no idea how to do it.
View 1 RepliesDepending on the data being used, I can have up 10,000 items in each of the 2 ListBoxs. I need to find and remove any Duplicates between the 2.I am currently using the method of select and Item from Listbox1 and search in Listbox2. If I find a match, then remove both items. This goes back and forth until all the duplicates have been removed. This take some time.Currently have the code in Old VB6 and VB2008 Express.
View 5 RepliesLINQ drives me crazy. Why does following query not return the duplicates, whereas it works with only one identifier? Where is my error?
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so here is my scenario. I have two input files... both are plain text files. File1 has customer name, customer address and invoice number. File2 has customer name, customer address, invoice number AND a keyline. File1 will only contain some of the records in File2, and it will change daily. I need to be able to compare File1 against File2 and output one file (preferably an Excel spreadsheet) with the info from File1 and the keyline from File2, that matches the duplicated info. I know the basics to get it to work, but I'm not sure what would be the easiest way of doing this... File2 can have up to 100,000 records per day. I'd only need to run it once a day though.
View 6 RepliesMy dgview has some records. But I wanna eliminate the duplicate rows from dgview if the first column and the last column values are same for the rows.in the below image rl1,rl2,rl4 are repeated but the values in ch2 and ch3 are different but still the value in ch4 are same for rl1,rl2,rl4.
so i wanna keep the first instance of rl1,rl2,rl4 displayed at the first time and rest should be removed.
But look rl2 it is case sensitive as the first instance is displayed as rl2 and the second as RL2. But still ignore the case sensitive and should display the result as in dgview2. I am populating from a csv file and it must work for many records.
how to compare 2 sql tables and show data that are in table 1 but not in table2?
Dim strSQLL As String = "Select t1.run from ML533 t1 left join portal t2 on t1.[run] = t2.[runNo] where t1.[run] <> t2.[runNo]"
Dim comm As New System.Data.SqlClient.SqlCommand(strSQLL, conn)
Dim ds1 As DataSet = New DataSet()
[code]....
i have tried google and other sites.. but still cannot find solution. maybe i post the wrong question. but i manage to do this code. but its only shows only 1 record missing, but its supposed to show 5 records that r missing.
While am using the below code it was throwing an exception update unable to find table mapping [Customer] or data table customer.
[code]...
I am making an sql search engine. I need it to find a row of data take some of the columns and paste it to some labels or textboxes.Need some help with the code got my connection, command, I am thinking on how to split the notes and the username onto two different controls or should I get two different sql statements for them ?
Private Sub btnFind_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnFind.Click
Dim con As New SqlConnection
Dim cmd As SqlCommand = New SqlCommand("select owner, notes from orders where orderref = '" + txtReference.Text + "'", con)
[code]....
Basically the code below is supposed to load data from a reader into a datatable, then compare a date to the start date and end date in each row of the table.However, I am getting errors on the if statement indicating Overload resolution failed because no accessible '>=' can be called with these arguments.I can probably do this with just the reader but I am playing around with a data table because I know I will have to learn how to cycle through the records and look at them at some point and this is a simple example I can use to do this.[code]
View 2 RepliesI am Tring to Make this work but I do not understand the Colunms as objects Part. Here is what I got
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I want to connect to Sage Data, to the stock table, and select certain columns such as SKU, title, description, sales price and then select the rows I want and send these to an excel spreadsheet formatted in the style required for upload as product feeds to google shopping, shopzilla, amazon and Ebay etc.Each feed is formatted differently and I have to create these manually all the time so I want to try and automate the process. We would have much better control of our ecommerce if I could do this quickly with custom program.
So far I have managed, after a lot of disappointments, to connect to the sage data through the sage ODBC and populate a datagridview. I've only got this far by luck, with many errors due to me and system and software problems. I thought this would be relatively easy as I once used an app to create a word document programmatically with a very thorough guide, it's not looking so easy now. I have also added a check box column to the datagridview for selecting rows and thats as far as I have got.I was thinking perhaps of passing the selected data to an array and then creating and populating the spreadsheet.how to get selected rows from DGV.
I have common sub to save data from data table to database like this ad.Update(tb) It works fine, but problem comes when i populate Datagridview using a joined query which takes values from more than six tables, for example
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I am having trouble with a table adapter i am working on. In the table adaptor query i am having adaptor take a sum of the data that falls within a date range in a few columns. then i have some text boxes on my program refencing the columns that are being summed together. The program then gives me an error when i go to run the function.
View 16 RepliesI am creating a project in VB.NET in which one of the reports require that the name of employees should be displayed as column names and whatever work they have done for a stated period should appear in rows below that particular column.Now as it is clear, the columns will have to be added at runtime. Am using an ODBC Data source to populate the grid. Also since a loop will have to be done to find out the work done by employees individually, so the number of rows under one column might be less or more than the rows in the next column.Is there a way to create an empty data table and then update its contents based on columns and not add data based on addition of new rows.
View 1 RepliesI have to check duplicate records in ArrayList. In ArrayList each item should have atleast 2 times before insert new Item. Per example
Example 1:
AL(0) = '1'
AL(1) = '1'
AL(2) = '2'
[Code]....
Method has to return = 'false', because '2' has 1 time in the list. So I dont
want insert '3' in ArrayList and return false.
I have a huge unsorted array of strings like
vector = {"2421024141", "325216182","2463112099","2416997168","11114721047","4116940195","1191138134","231244164123 ",..........}
[code].....
I have searched high and low for a solution yet still no luck, I have two arraylists populate with FileInfo and I want to compare the two and write the duplicate (matching files) to a listbox.Here is how I have populated the arraylists but in terms of the comparison I have not found anything that works:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim arraylist1 As ArrayList
Dim arraylist2 As ArrayList
[code]....
What can I do next to compare the two and write the duplicates to ListBox1.
I am trying to find duplicates in a string. The code works more than I would. The purpose is to create a jagged array with values and positions like this one:
myString = "1123464263948465475965069068547363532627281901"
jagged= {{{1},{0,1,42,45}},{{2},{2,7,36,38,40}},{{3},{3,9,31,33,35}},{{4},{4,6,11,13,16,29}},.........}
Value Positions
1 0,1,42,45
2 2,7,36,38,40
3 3,9,31,33,35
4 4,6,11,13,16,29 ......... and so on with unique keys and multiple or not values.
My code do this, but looping all over the string there a moment when it repeats values and positions, because already found them earlier. How do I make to keep just the UNIQUES? How do I skip the loop when the value is already in?
My code below
Public Class Form1
Public myString As String = " "
Public jagged()() As Integer
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
myString = "1123464263948465475965069068547363532627281901"
jagged = New Integer(myString.Length - 1)() {}
[Code] .....
I have Dataset ds filled up with values Until now I was displaying values in GridView. Now I want that all the rows should be columns and columns should be rows.I have 2 options: Either 1 I can directly convert grid to columns and display it, or 2 I can convert the GridView to html and then write loops to convert. I was trying the 2nd option but I cant figure out how I should do that.[code]With this code I am still getting same as GridView. Please help me for converting rows to columns and vice versa.
View 1 RepliesI have a customers List(of String) on which I am trying to find the duplicate customers.[code]...
View 2 RepliesThis is my problem: I have an array with dates in it and I want a list with the dates and how much that date is sequel to the amount of that dates in the array.
This is my code so far:
arrsVerschillendeDagen(iTellerke) is declared on moduleniveau
arriMaand(iTellerke) is declared on moduleniveau
arriJaar(iTellerke) is declared on moduleniveau
I have a subroutine too that redimension my arrays.
Private Sub FillArray()
For iCounter As Integer = 0 To arriDag.Length - 1
arrsVerschillendeDagen(iCounter) = arriDag(iCounter) & "/" & arriMaand(iCounter) & "/" & arriJaar(iCounter)
Next
'result: 14/10/2009, 20/12/2009, 20/12/2009, 14/12/2009, 14/12/2009, 14/12/2009
[Code] .....
Imagine the following scene: I have one table which have tree columns (ID, Number, Name).
A Select query result on this:
code:
Now, the user deletes the Number 3 and 4. So, now the Select query is going to be:
code:
And I want to have:
code:
How can I organize the column?
I'm creating an application that creates a list of 20 ramdomly selected numbers within an array and displaying those numbers in a listbox. I then need to display the duplicate numbers in an adjacent listbox by clicking the find duplicates button. How would I be able to access those 20 numbers in order to find the duplicates?
View 2 Replieswhat is the fasted way to get all the rows from table1 that aren't in table2? i have over 4000 rows in table1, i am currently looping through using:
for each dr as datarow in dt1.rows
then i check table2 to see if that entry exists using:
dim rows() as datarow = dt2.select("EmployeID = " & dr!EmployeeID)
if rows.length > 0 then it exists in both tables - dont need it
other wise i copy the row into a third table which ends up being my final collection of rows that are in table1 and not in table2. this takes a really long time. is there a better, faster way that isn't too complicated?
I have a database application with several data tables. How can I use a for each statement to add the records of the datatable into a collection?
View 7 Replies
