VS 2010 DataGridView And RowValidating And Escape Delete Error
Feb 24, 2012
I 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
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Aug 16, 2011
I want my users to enter some data into a bound DataGridView (dgv) and when done to have the program fill in some columns (hidden key) and to populate some cells in the same row according to the data entered - like max of several cells.
Can I use DataGridView RowValidating to update cells? Or is it just a Cancel or not issue?
What would be the correct way for me to fill in hidden key information and to calculate some cell values?
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Mar 24, 2011
Based on our tests primarily done in VB.NET in VS2010 it seems that when you close a WinForm the "RowValidating" event of the DataGridView on that form behaves differently depending on whether the form is MODAL or NON-MODAL. What we did was open the form (MODAL and NONMODAL) and changed a value of a cell and then immediately clicked the "X" to close the form. It looks like the "RowValidating" event DOESN'T fire if the grid is on a MODAL form but it DOES fire when the grid is on a NON-MODAL form. We can't figure out why that is... Is this a known bug in .NET?
[Code]...
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Apr 26, 2012
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.
[Code]...
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Dec 29, 2011
in visual basic 2010 How to delete a selected row from datagridview and table then skip to next or previous record
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Jan 6, 2012
What 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:
[Code]...
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Feb 6, 2012
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
[Code]....
Now this code works if one row meets the criteria but when multiple rows have the same value i get the following error.
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Aug 5, 2010
Im trying to make a program that loads the first image in a folder then shows it on the picturebox1 then the user will press next, and that image will be moved to a foder named viewed. I got the code to move but I get an error saying that image is being used in another application. Here is my
[Code]...
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Mar 24, 2011
How to I convert text to JavaScript escape sequences in VS 2010 ? Let's say my text in textbox is: "ab…". This contains two diacritic characters : and(not English characters).
[Code]...
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May 6, 2012
I use DataGridView in my project. Everything worked fine until I added some code in the RowValidating event. During the form_load event exception is thrown on the statement that set the datasource of the DataGridView.The project uses bindingsource for the datasource of the DataGridView. My validating code is shown below:
Dim currentRow As DataGridViewRow = Me.dgExpenditure.Rows(e.RowIndex)
Dim incexpCell As DataGridViewCell = currentRow.Cells(0)
If Not Me.closingBoolean Then
[code]....
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Mar 6, 2010
Can't Remove Row in datagrid on event RowValidating
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Oct 4, 2011
i have this code i want to populate datatable with datagrid. . . .but this is error in column name i dont know why. . . .
Dim dt As New DataTable
Dim rptdoc As ReportDocument
With dt
[code]....
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Jun 30, 2010
I am populating my datagridview as such: Private Sub LoadDatagridview()
Dim lf As New IO_LogFile
If Not lf.DataFileExists Then
WriteLogInfo("Utilities.DisplayUserlog.LoadDatagridview", "Log files does not exist for " & combobox_CompanyId.Text & ". Please select another company.", True, MsgBoxStyle.Critical)
Exit Sub
End If
[Code]...
My data displays without using everything in the 'with datagridview_Userfile' but I need to format the screen. I used this code in another program and it's identical and has no problems so I am bewildered.
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Mar 16, 2011
I'm trying to delete a number of records in a table from the last and forward. My idea is to use sql like this: delete top " & variable & " * from table where ID = something It gives me a general sytax error. Is it at all possible? Fuga. Edit: I also have the order by statement there. I just forgot to put it in the question.
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Aug 5, 2011
If I delete the top row of my datagrid, or load a page without any data in the datagrid, I get a NullRefrenceException error. "Object reference not set to an instance of an object."suggest a way for it to only run the default values needed sub if a row exists in my datagrid, else ignore it?
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Mar 13, 2012
I'm trying to resize any image fields in my data-bound DataGridView to 200x300; the column resizing code looks like this:
[Code]...
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Jul 14, 2009
I use this code to delete row in datagridview. but it is error :
Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index[code]...
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Mar 10, 2009
program outline:I have a sql databse Records which has 3 columns accountid, passwords and validity. I successfully programmed the insert record function via Add button. I also have Datagridview. I want to have a function which will delete the record from the datagridview & database when i would click the right button. I have properly applied the contextmenu for the datagridview. but However i am couldn't able to function it properly. how to do thisow to delete record from datagridview by using right click functi
Code:
Imports System.DateTime
Imports system.Data.SqlClient
[code].....
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Oct 13, 2009
I have 1 datagridview which display the columns which is name,telephone and selection which is the checkbox and 1 button which is delete button. So what I wanted is that to delete one-by-one when the checkbox is selected. Here is the code that I use which is to display the data:
Private Sub Contacts2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim sql As String
[Code]....
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Oct 27, 2009
I bound the DataGridView with Database.I have checkboxes in the first column.I want that on button click,delete rows whose checboxes are checked?
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Jan 7, 2010
I want to delete row in datagridview, this (DataGridView1.Rows.Remove(DataGridView1.CurrentRow)) works fine if row is selected , but if it is not and you press on the delete button appears error, for this i wrote this code
On Error GoTo 1
DataGridView1.Rows.Remove(DataGridView1.CurrentRow)
1:
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Nov 23, 2009
I'm new to VB and using a datagridview for the first time. I've spent the last 2-3 days trying to get row deletion to work and can't do it. I've tried every piece of code I can find on the internets, and none of them are doing it.I have the selection mode set for full row, with a delete button on the form. Clicking it will delete the row from the DGV, but the changes are not going back to the database. Here is the code I'm using right now in my delete button event handler:
[code]...
The row disappears from the DGV, but not from the database. I've gone back and started from scratch a few times now
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Nov 12, 2010
When i upgrading visual basic 6.0 code to VB2008 by the tool of visual studioïTool->upgrade visual basic 6 code, an error arose.The following is the error message: "File I/O error:the given path's format is not support. Delete _vbsnipup directory and try again."
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Mar 18, 2009
how to go about the code for a button to delete the row in a datagridview. i have rows of data in there with a button at the end of the row. the difficulty im having is assigning the values in the row to delete it from the data grid and then update the database to remove the entry.i've tried this but it doesnt work? i'm sure there will be some short statement to do it but dont know what it is.
Private Sub rentalDataGridView_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles rentalDataGridView.CellContentClick
For Each row As DataGridViewRow In rentalDataGridView.SelectedRows[code].....
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May 14, 2012
imports System.Data.SqlClient
Public Class Form3 Inherits System.Windows.Forms.Form
Dim myConnection As SqlConnection
Dim myCommand As SqlCommand
Dim ra as Integer
[Code] .....
Attached File(s)
deleting.txt (793bytes)
Number of downloads: 9
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Feb 10, 2010
I have a VB 2008 program over the Northwind DB customer table.It uses LINQ to add, delete and edit records.
So I load everything into a datatable/dataset first.The Add and Delete occurs when the buttons are clicked on a binding navigator. The edit occurs when a cell is changed, and that row is clicked off. I've set the Customer ID field as the primary key in the DT. I then bind everything together with a binding mavigator.
So far so good, Adding & Editing works nicely the DGV & customer table . [code]...
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Jul 28, 2009
I have a data which is saved in textfile. when form load the data in text file will be load in datagridview. i want delete the selected row from the datagridview. I used this coding to delete.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim row As Integer
[code].....
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Apr 29, 2011
How can I delete a cell value in DataGridView?
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Mar 15, 2012
I want to know how to delete a current row from DataGridView and this will automatically deleted from my database (MySQL)
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Nov 30, 2011
i dont know how to delete datas from datagridview in vb.net.
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