Deleting Duplicate Row In DataGridView Error
Feb 19, 2011I am trying to delete a row if the program finds a duplicate entry.
View 3 RepliesI am trying to delete a row if the program finds a duplicate entry.
View 3 Repliesi've been all over the internet to solve this problem, but i've found no solution to my problem.my concept is this.Based on selected value within a combo box, the datagridview will populate with values from the database.
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my problem is in subject can u please give me a easy way to do it?
View 5 RepliesI 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].....
I am adding line entries in a .ini file. The problem is, I am creating duplicate lines in the file, which I do not want to do. I searched this issue online, and the consensus is to use an array, loop through for duplicates and create a new file. However, being so new at this and teaching myself how to code no less, I am at a dead end. This is not a school project, it is something I am doing for work on my own time. I have all of my code done for the program except for this last step.
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I am working on creating a program that records animal data (wombats) and stores it into a database, using vb.net. I am trying to add new records into a database but every time I click add, to execute that, there are duplicate records that gets added. How do i write the code so itonly adds it one time. I am using a data reader. Here is the
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I have a datagridview with rows and 2 columns the first for staffname the second for the price the first column name is "staff" the second is "price" I want code count's how many time the row have been repeated to count the item price
View 8 RepliesMy browser application has an option to display all the "href" elements of a web page in a datagridview.
I use the code below to populate the datagridview.[code]...
I have a bound DGV that took a bit of work to get its columns set up. I'd like to show a 1-row version of this identical DGV on a second windows form. Is there a way to programatically place a copy on the second form. I would adjust the height and position of the 1-row version, and create a new binding source on the second form so that I could filter the data.
View 1 RepliesIn my winform, i m using a datagridview.. I m also allowing to enter data through it. User has to select a product and put in price for it. for products column i have used combo box and for rate column i have used text box.I want that once user has selected a product, he is not allowed to select the same product for other rows... I mean duplicate product selection not allowed... how do I prevent it..
View 11 RepliesI have a datagridview control that displays a list of expenses. I would like to code a button that will delete the record from the DGV and the DB table. Then I would like it to update so the DGV still shows up the updated DGV
View 3 RepliesI have a simple database with our customers data. I'm using access database, dataset, and a datagridview. So when I selected a row, I want to make a new row with datas from selected row. Here is my code:
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how to prevent duplicate RECORDS in datagridview cell vb.net
View 2 RepliesIf I have an unbound DGV with hundreds or thousands of rows what is the easiest way to find any or all duplicate rows? ie. where the data in all the columns is the same in 2 or more rows.
View 4 RepliesI have a form with a DataGridView binding to an Access database. Everything works fine and it populates perfectly. Except when I delete a record. I get the following. I found a few threads about the issue but I cannot resolve the issue. Can some one give me a step by step to resolve this. [Code]
View 4 Repliesi am working on datagridview vb.net 2005 i am trying to modify the data with datagridview control the problem is the data is virtually modified in datagridview but no Change happened in my sql server 2005 database
View 6 RepliesI have a DataGridView in my Form. I am adding a handler as follows:
Private Sub DataGridView1_SelectionChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles DataGridView1.SelectionChanged
If Me.DataGridView1.SelectedRows.Count > 0 Then
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I have a datagrid and am using excel to store te data in. how can i delete ive tried a few things but nothing seems to work.including just the top line of code with dispatch = @Dispatch, and so on with all my column names
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I want to delete several records from a datagridview.
I can delete one by one, but not all in one go. I want to select several rows and then delete.
My code is:
Dim delContacts As String
'strDelContacts = DataGridView1.SelectedRows.Count
strDelContacts = DataGridView1.SelectedCells.Count
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This is such a basic question, I'm almost embarassed to ask it. How do I loop through seleted rows in a DataGridView and remove the rows?I've tried this, but it doesn't work. After one row is removed, the index is all screwed up.
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I have a List of an object, set to DataSource of a BindingSource, set to DataSource of a DataGridView. Then I added a DataGridViewButtonColumn which I want a click to remove that record from the collection. So I simply call collection. RemoveAt (e.rowIndex) from the DataGridView CellClick event. However this produces an IndexOutOfRange Exception; "1 does not have a value"..
So is happening here? I have maybe a vague idea, but would like to understand exactly which events are failing etc.. and what do i need to do to perform this action properly?
EDIT: This seems not to happen if I use a BindingList.. But when using a List, I get this problem..
I tried the following code but it did not work.
Private Sub PasswordDataGridView_UserDeletingRow(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewRowCancelEventArgs) Handles PasswordDataGridView.UserDeletingRow
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I want to let others to delete selected row in the following datagrid view and I have written it like this. Now when I select a row and press the delete button I can remove the selected row
but it will not update the database which meant it will not deleting the above row.
I have bound my datagrid view using databinding.
Private Sub dgvAllInvoices_UserDeletingRow(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewRowCancelEventArgs) Handles dgvAllInvoices.UserDeletingRow
If MessageBox.Show("Do you really want to Delete this Invoice ?", "SD Technology", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) = DialogResult.Yes Then
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I am having problem deleting my data on click event. Here is my
Dim inc As Integer
Dim cs As New SqlConnection("Data Source=ConnectSQLEXPRESS;Initial Catalog=ForumCrawl;Integrated Security=True")
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i've this code to insert records into datagridview
PrivateSubForm1_KeyUp(ByValsender
AsObject,
ByVale
AsSystem.Windows.Forms.KeyEventArgs)
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the trouble is that i need to evaluate the duplicate item from serialtextbox when the scanner put in the code?
Wondering if there is a way I can duplicate controls and have them work properly? basically, i have a datagridview with code in it plus buttons that do various things to it etc etc. ideally, i'd like to be able to have two of these datagridviews on show. So, user presses button, second datagridview shows. Note that I don't want them to both display the same data - they should both be independetly editable..
View 3 RepliesHow would I delete only the successful inserted rows for insert and then move the non successful rows up and allow the user to correct the data and get it ready for an insert. If I dont delete the successful rows then I will have multiple inserts of the same dataRow and we dont want that! And if I don't move the data up then it will have blank rows uptop and will end the try and not insert the corrected data. You can better see what logic I am trying to perform at the bottom of my code, right after I insert into the database.
Here is my code.
Private Sub btnLaserGenerateTicket_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLaserGenerateTicket.Click
'Function declarations
'Object declarations
Dim localOutputServer As SQLServer = Nothing
'Variable declarations (Form)
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I have MS ACCESS database and a table name as ALARM.table fields areDate- property ate/timeTime- property date/timeMessage - property textnow I am updating the datagridview in alarm conditions,and when I press delete button I want that the selected row must be deleted., my code is
Dim conn As OleDb.OleDbConnection
Dim strSQL As String
Dim strConn As String = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:gcodeuser.accdb;
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I am having problems deleting any rows from a cascaded DGV. I get a run time error complaining that I am breaking a constraint almost as if LINQ is try to delete from the parent table. I have 2 DGVs on a form one displaying Species and the other all SubSpecies for the currently selected species and that works fine.
However when I try to delete a SubSpecies I get the following exception:- An attempt was made to remove a relationship between a Species and a SubSpecies. However, one of the relationship's foreign keys (SubSpecies.SpeciesID) cannot be set to null. At first I thought the error was raised by SQL server due to the Cascading Delete limitations on L2S but the error message for that is very different the DataContext.Log doesn't show any attempt to change the data.
The code used to bind the DGV's is as follows:-
Protected Sub BindControls()
Try
DC = New DataClassesWhatToPlantDataContext
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Here's my code. It gaves me an IndexOutOfRange exception. What's wrong with it?
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