Clearing All CheckBoxes In DataGridView RowSelect Column
Mar 20, 2012
I believe the following code, which clears/unchecks the checkbox in the "RowSelect" column, actually runs, but it runs VERY slowly. In testing I have approximately 2300 rows in my DataGridView:
Private Sub btnClearAll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClearAll.Click
Dim curRowIndex As Integer = 0
Try
dgvWISDataGrid.SuspendLayout()
For curRowIndex = 0 To dgvWISDataGrid.RowCount - 1
[Code] .....
The app appears to "hang" because this loop is taking so much time. When I hit the pause button, it always seems to freeze on the "dgvCell.Value = False" statement and when I hover over it the popup says "Property evaluation failed." Something is taking quite a long time or is interfering with this routine.
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Nov 27, 2009
I have to implement a column (TransactionCompleted) which will only hold two states Yes/No. I am using SQL Express and wonder which would be the best DataType to go for that column, if I prefer to display the data in a DataGridView column as CheckBoxes later in my application?
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Mar 18, 2011
I'm doing an assignment for Uni and in my VB.NET form I have some checkboxes, I'm trying to loop through and clear them (I have a button which will clear the form). My problem is that there seems to be no property I can use to set the state of a checkbox when not explicitly telling VB which checkbox I want to use. for example, I can go
WineCheckBox.Checked = False
That will check the box, but I wand to DRY the code up a bit and not have to repeat this for each check box I have, this is what I was trying to do:
If TypeOf element Is CheckBox Then
element.Checked = False
End If
I've tried using element.CheckState and element.Checked and both times I get "Checked (or CheckState) is not a member of System.Windows.Forms.Control".
This is the whole block of code:
'clear the controls
For Each element As Control In Me.Controls
If TypeOf element Is TextBox Then
[Code] .....
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Jan 12, 2010
I have developed a simple form with some checkboxes, textboxes, radiobuttons, and textboxes inside a groupbox. Initially I had all of this inside 3 tabs. I created a button to clear all selections so user can restart the process of selection if so choses. It does not work (see below). I thought it is the tabs - so I went on and removed them (by coping the groupbox - deleting the tabs and then pasting the groubox into the main form). The code still does not work. Is there a setting that I must change or something else because a created a simple form with a couple of groupboxes that had all the above mentioned and it works just fine - all of them clear. Just in my form it does not work
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Dec 9, 2010
How to count the total no. of asp.net checkboxes, checkboxes checked, no. of checkboxes remain unchecked in webform using vb.net ?I m using Visual studio 2008 with vb as a language ..I my webform i have 10 checkboxes...i wanna count total no. of checkboxes in webform in textboxes1 total no. of checkboxes checked in webform in textbox2 total no. of checkboxes remain unchecked in webform in textbox3?
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Jan 17, 2012
I have a listviw with 5 columns. how to add only checkboxes in column 4 and 5? Every time I add an item to that listbox the first three columns will have text and the last two will have always only checkboxes?
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Jun 12, 2009
I creating an EPOS System..I have a datagrid that stores details about all of the items which the user wishes to buy in the transaction.However if the user changes his mind I have a feature that cancels the row in the datagrid.[code]The code functions fine, however a problem arises if I enter a new row into the datagridview, the previous row I recently cancelled appears again.
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Aug 11, 2010
I have a form that contains a datagridview control that is bound to a dataset in design mode. This form contains various other textboxes and combobox controls as well and allows users to create and view Work Orders. It also has a Button control ("New W/O"), that when pressed will clear all values from all the controls on the form. My problem is that it's not removing the rows of data in the dgv. The code that I used to try and clear out the dgv is[code]...
How can I reset the dgv to retain it's default column headers but remove all the rows for the selected W/O?
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Jun 5, 2011
I use Visual basic 8.0.I have a bound Datagridview.This Datagridview has 25 row.
Only thing i want to clear the row Contents of a specific row.I want not delete of remove the row!
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Mar 9, 2009
I have a DataGridView control bound to a DataSet. The DGV loads data based upon a combo box selection. If there are no records in the table that meet the combo box selection then I want the DGV to be cleared.
I've tried:
Me.gdvEXTSigns.datasource = Nothing
This does not clear the existing data (rows, if any) in the GDV.
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Jun 18, 2012
I am new in VB2008. How I can programmtically delete/remove/clear the content of a cell of DataGridView? Say, for example, I have the following code that populates with data in DataGridView. Now,how can I clear/delete the "Test4" text from the cell of DataGridView? The GridView is not bound to any database.
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim dt As New DataTable
dt.Columns.Add("income")
[Code] .....
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Feb 9, 2009
clearing cell contents within a DataGridView?I have a column with a list of names and would like to be able to make the whole column blank.I can currently achieve this (not the greatest) by clicking on individual cells and doing this ..
DataGridView1.CurrentCell.Value = " "
But rather than doing this I would like to be able to do every cell in the column, all at once. I'll put the code behind a button, so it can all be achieved by a single click.
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Jul 25, 2011
I use ADO.Net to call a stored procedure that retrieves data from our database.I put that data into a data table using this code below:' set Ready ResultIDs in databaseDim dt As New DataTabledt.Load(cmd.ExecuteReader)
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Jan 12, 2010
I am using VB express 2008 with MSAccess as Database. I have a table DailyExpenses in MsAccess with four columns of which one is ColumnPaid having checkboxes. I used following query to display records of DailyExpenses in Listview: Dim cmd As New OleDb.OleDbCommand("Select * FROM DailyExpenses ", con)
It is working fine but it displays False in the column PAID in Listview instead of checkboxes. How i can display checkboxes in Listview?
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Mar 28, 2012
I'm trying to count the number of checked checkboxes in column 5 of the table. I've tried several approaches, but none have worked so far.This is the code I've written so far. As you can see, I've managed to count the number of rows.
VB
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
dbProvider = "PROVIDER=Microsoft.Jet.OLEDB.4.0;"
dbSource = "Data Source = C:/Databases/database.mdb"
con.ConnectionString = dbProvider & dbSource
[code]....
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Jan 11, 2010
I am using VB express 2008 with MS-Access as database.How i can retrieve data from a table having a column containing checkboxes on the base of Checkboxes checked or unchecked. Column PAID is having checkboxes.[code]...
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Jun 2, 2011
I need a way to have 3 colums of checkboxes inside a checkedlistbox. I know i could do it with a panel, labels and checkboxes. But having them all in the control would be more convenient. I'm pretty sure there is no direct way of doing this, so i assume i need to create a user control. If you're not completely sure what i'm trying to create, i'm going for something that looks like this: [URL]
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Sep 16, 2011
I want to create two columns of checkboxes but only the first column is being displayed.
[Code]...
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Sep 1, 2011
I'm trying to loop through a column of checkboxes to see how many checked values there are in that column. The user has to have 2; no more, no less than 2, otherwise an error should show up.
Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
Dim count As Integer = 0
Dim x As Integer = 0
For x = 1 To DataGridView1.RowCount - 1
[Code] ....
The error message still occurs when I have only 2 chosen in that column. I even tried this
If CBool(DataGridView1.Rows(x).Cells(7).Value = Checkstate.checked) Then
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Apr 9, 2010
How to add a checkbox column at first column of datagridview including column header?After adding, how to code to "check all" or "uncheck all"?
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Aug 23, 2011
I have a dgv with a column type = DataGridViewAutoFilterCheckBoxColumn. I want to know if there's a way to I can get that entire column to become disabled (or Enabled = False) so it won't let the user click on the checkboxes. I tried looking in the "Bound Column Properties" but there isn't an option to disable the entire column.
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Jun 21, 2010
I'm working on a project where I've loaded a database into a DGV. I also have an additional unbound checkbox column for the users to select entries with. I have code in place to read the selected rows and save them into a CSV string, which is then saved in the usersettings. All this works fine.
PROBLEM AREA:
I'm trying to reverse this effect so that when the DGV loads, the checkboxes that the user selected previously are checked (and the others left unchecked). I've debugged this extensively, and using watches have confirmed that all the values in the loops are right, and the conditionals are all kicking correctly, but it seems the code I'm using to actually check the boxes doesn't work. I've searched dozens of web pages, msdn white papers, and forums, but no suggestions will check the darned box. Below is some example code.[CODE...]
In debugging, it seems the value for the Cells IS changed, but the checkbox never gets selected. The try/catch was just to pick any error messages (but there are none with this code). What am I doing wrong here?
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Jun 21, 2010
I'm using datagridview in my vb.net project. In that datagridview I use checkbox for null value check property if the user click that how I check if the box is check or not in a number of rows and know how many check boxes are clicked also want to count. i try with my coding but it leaves the first line how I check.
Dim tableid As Integer
mydisp = New SqlDataAdapter("select max(id) from tst_m_tables", Myconnection)
mydisp.Fill(mydst, "id")
tableid = mydst.Tables("id").Rows(0).Item(tableid)
For i = 0 To dgvtabledetails.Rows.Count - 1
[Code] .....
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May 6, 2012
I have a datagridview that is showing Yes and No in 2 checkbox cells. (Logically I should have just one checkbox but it is a legacy program (from Excel VBA)). So what I want to do is if the user clicks one checkbox cell to make the value True then the other checkbox in the row needs to be set to False. I have googled and searched the Forums here for an answer for this but found nothing really specific. The envisaged problem here of course would be that the events are mutual so they should not keep firing continuously in a "loop" when one or the other is changed - that might be the really difficult bit.
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Jun 4, 2011
i am currently having problems with Datagridview, for example when i select the first checkbox, second checkbox onwards.
I would like to update the textbox on my form to display '2' records selected. But there is one problem i faced is that when i deselect the checkbox, it does not update. It still display '2' record selected. What event handler should i use to get it to work?
Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgvAssignGridView.CellContentClick
[Code]......
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May 24, 2010
I have a strange problem with a DataGridView I'm using which is bound to a table in VB.net
I've added a checkbox column to allow a user to tick a bunch of rows that I can then loop through and save off to a different table. All the checkboxes are enabled by default. So it's really a case of unchecking the rows which aren't required.
However, the DataGridView re-enables any checkbox that I click after I click on a checkbox in another row. So in effect, only one row can be unchecked at a time.
EDIT: I forgot to mention this is a Windows form, not an ASP.net application.
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Mar 9, 2010
.Net 3.5
I have 2 columns in a datagridview bound to datasource. When the user checks off one checkbox, i want to check some business logic after which I set the 2nd check box in the same row as checked as well.
My problem is: I want to check the 2nd check box right after the user clicks on the first checkbox and not only after he tabs away by clicking somewhere else.
Right now, I only succeed runing my business logic in the CellValueChanged or CellParsing events but those only occur after the user leaves the checkbox, which is not desired, I d like to run the logic and show the 2nd checkbox checked right after the user clicks on the 1st checkbox.
I also tried: CellClick event but I don t know how to : when the user clicks on a a checkbox, how to change the value of other checkboxes in the current row during CellClick event . The changes does not take effect in the UI !!!
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Jul 12, 2010
I am working with a datagridview and checkboxes. Ok, I have the following code which runs without any errors but doesnt give the required results.
1) My problem is that, when I uncheck the checkbox in Cell 2, I want Cell 9 and Cell 6 to be empty.
2) When I uncheck the checkbox in Cell 2 and click any other Cell in the datagridview and check again checkbox in Cell 2 - it DELETES the data in Cell 9 & 6.
Now, when I check again the checkbox in Cell 2, Data is not populated in Cell 9 & 6 regardless how many times I try....
[Code]...
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Jul 14, 2010
i've create a datagridview with two columns, one textbox and the other checkboxes. The chekcbox column has a check box in column header aswell.
When i resize each column the checkbox column speciallly the checkbox in the column header, does not align with the checkbox column, it even goes in the textbox column as well. How do i fix this column resize issue?
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Sep 30, 2009
I have a checkbox column in my grid. Let say the name on that column is "Cut". How should I do to take the right mouse button and and get a little menu where I can choose select all or deselect all checkboxes?
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