I have a datagridview extracted from a csv file. It displays duplicate rows. How can I delete those duplicate rows from the datagridview? replies would be precious.
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i am trying to delete specific rows in a datagridview that start with a specific falue. What i have so far is
Dim rows As Integer
rows = Me.DataGridView1.Rows.Count - 1
For count = 0 To rows - 1
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Now this code works if one row meets the criteria but when multiple rows have the same value i get the following error.
I am populating the list view using mysql and i dont know how to avoid duplicate rows.
Private Sub Btnrefresh_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btnrefresh.Click
Using connection As New MySqlConnection(";")
Using command As New MySqlCommand("SELECT Distinct name, type, uploaded, uploader, location FROM programs", connection)
connection.Open()
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I have two datagridview's both are databound. First one shows items for sale and the second stores all the items that were sold. I am trying too transfer selected rows from one to the other but no matter what I keep getting told "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound."
View 2 RepliesI'm going nuts with this. Obviously I cannot open the reader ard writer on the same file simultaneously.
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I want to delete the rows of a DATABLE that verify a criterion. Someone would be so kind to show me how do this.For example, I have a DataTable with "customers" and I want to delete customers who live in "Madrid"... criterion: CityCustomer='Madri
View 10 RepliesWondering 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 RepliesI 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]...
How 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 dont 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
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How 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 dont move the data up then it will have blank rows uptop and will end the try and not insert the corrected data. Here is my code.
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If 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 RepliesCan anyone tell me why "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound." I keep getting an error "Invalid Operation Exception was Unhandled" error. All I am attempting to do is allow the user to select products from a list(or a second datagridview) and have it added to the datagridview so they do not have to type in every cell since the other cells are not visible because they do not purtain to their needs. Plus they will be able to save all items at the same time.
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I have a datagridview and im using this code fill the table from a txt file.
Private Sub PopulateDataGridViewFromTXT(ByVal SFileName As String)
'Variables to store the count of rows and columns
Dim nRows As Long
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All that long list(more than 2000items) is loaded into my datagridview which have two columns named "ITEM" and "ID" With the code above the item from the id is splitted to each seperate column.I want to press a button and filter the table to show only swords for example or only spears.And the other thing is to make a search button to search for a specific item,which i suppose if the first thing is doable the second will be peace of cake..
on my form i have a GridView with add/edit/delete rows disabled, i need it to show blank rows for the unused size rather than blank background.
View 1 RepliesI am trying to insert an initial line (0) into a datagridview (named params). The program will then read each cell in that row, pass them through a function and return values be placed into the next line (1). This will continue until one of the parameters reaches some set point. The problem that I am having is that when I try to insert a new line, it appears above the initial one and not below it like I would like it to.
Here's my code so far:
Private Sub HurricaneWinds_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim init_xrange() As Double = New Double() {0.0, 0.0, 0.0, 40.0, 0.0}
For i As Integer = 0 To 4
params(i, 0).Value = init_xrange(i)
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I'm trying to create an array of DataGridView rows using this
Dim rows As DataGridViewRow() = Nothing
Me.DataGridView1.Rows.CopyTo(rows, 0)
But it gives me this error:
Value cannot be null.Parameter name: dest
My below is not an error. It just I need an alternative way of doing thing. I have a DataGridView which has a DataSource of DataTable on a Form. In this form, I have a 'Remove Selected' button which will remove all selected rows in DataGridView. And another 'Remove All' button which will remove all rows in DataGridView regardless of rows selected or not.
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I have a datagridview on my desktop application, what I need is to show in a a textbox the sum of collums values, of rows selected manually. Is this possible?
View 4 Repliesin visual basic 2010 How to delete a selected row from datagridview and table then skip to next or previous record
View 1 RepliesWhat is the best way to give a warning message to the user and cancel a row delete in a datagridview? This is about as far as I have got:
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I generated columns from database and getting cell values from database too. my problem is that for some columns I have to generate checkbox in each cell at runtime.I m using visual studio 2010.
View 2 Replieshow to Disabled Specific Rows in DataGridView using visual basic 2010
View 8 RepliesI have a bounded datagridview and have some code in row validating event. When i add a new line by writing something in one of the cells of the new row, and if in the middle of the process i wish to cancel this new row, if i use the escape key i get an exception, something like, Index (number of the removed row) does not have a value. After the exception the exception the row it's removed...
How can i make the row validating to work correctly?I have this code in the start of rowValidating
vb.net If MyDataGridView.Rows(e.RowIndex) IsNot Nothing AndAlso Not MyDataGridView.Rows(e.RowIndex).IsNewRow Then
End If
how can I delete all the rows in a DataGridView remaining only the row of column headers
View 4 Repliesi have a datagrid view and want to delete multiple rows , or the hole datagridviewif i select a few rows and press delete , it delete's 1 row each time not all the selected rows.
View 1 Replieshow to delete single row with the help of header selction of a gatagridview.how can i delete a multiple rows using checkbox.....But i preserved a row sequence... how i can delete a row using checkbox in datagridview with a click of button.....
View 1 RepliesI am having trouble updating or deleting rows that were just added to my form. If I close the form and then open it again everything works as intended. Below is a bit of code from the project.
'Delete row from DataGridView
Try
MasterDataSet.PaintStock.Rows(PaintStockDataGridView.CurrentRow.Index).Delete()
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know how to delete single row with the of header selction of a gatagridview.which how can i delete a multiple rows using checkbox.....
View 7 RepliesHow to delete all rows from unbound datagridview ?
View 1 Replies