Manipulate 2 Checkboxes In DataGridView At The Same Time?
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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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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Oct 9, 2010
I have a number of tabpages that each contain a datagridview control only. Based on the results of a SQL statement I then loop through each tabpage and set its name. The reason for this is that at runtime (and depending on the results of the SQL statement), the contents of each tab page will change - henceI loop through the tabpages and set the name/ text (to reflect what will later be shown in the DataGridView)
The datagridview control on each tab has the default name e.g. DataGridView1, DataGridView2, DataGridView3 so it's easy for me to loop through them e.g.:
for i as integer = 1 to 3
[code].....
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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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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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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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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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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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Oct 11, 2011
I have a datagridview with checkboxes in the first column and I want to do a loop on saving the serialnumber(s) when the users decides to check a number of checkboxes Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
the problem with this code is that it only inserts the serial number of the LAST checked checkbox and the number of entries of it depends on the number of checked checkbox for example ... if I checked the rows with the serialnumber 123 and 55652341, first the row with the serial number 123 then second 55652341, only 55652341 appears in the database and it is entered twice(twice because two checkboxes are checked)
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Mar 10, 2010
coding a "check all" button for datagridview checkboxes.
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Dec 28, 2011
does anybody know how to get the datagridview to display just the time in instead of the date and time. I am tied to a downtime tracking database that has a separate date and time field. when I try to display/edit them the datagridview box refuses to leave the date out of the time and keeps appending 12/30/99 to the time field. I have spent the last 6 hours on msdn trying to find a solution and none of them seem to work. why did they put auto-formatting in a control without any way of defeating it? anyways, is there some way of displaying the long time (23:00:00) not 11:00 pm in the datagridview without it appending a date to the field just because the data type is date?
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Jun 2, 2010
I have a datagridview with a datatable in a dataset as a datasource. When i add a new row in the datagridview it is automaticaly added to the to the underliyng datatable (its datasource) . However it will only be addad after i click another datagridviewrow. I would like that update to be just after i added the row or after i edit one of its cells and not only after i click a different row.
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Jan 10, 2012
Does anyone know how I would go about embedding a DateTimePicker in my DataGridView?I've tried this piece of code but it looks like DateTimePicker isnt a valid GridView control - is it a lot of hassle trying to implement this?
Dim calendar As New DateTimePicker
totalKM = New DataGridViewTextBoxColumn()
totalKM.Name = "Total KM"
[code].....
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Jan 31, 2012
i have problem in manipulating DataSet, how can i filter rows without getting the whole records in tables.
[Code]...
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Feb 8, 2012
Private sub updatelabels()
If me.invokerequired then 'entire form -- ok ?
me.invoke (new methodinvoker (addressof updatelabels))
[code].....
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Oct 1, 2010
I have a form with a bunch of tabs on it, but I don't want them to all be visible all the time.[code]...
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Jul 9, 2009
I am developing an intranet app (so security isn't such a problem). The client wants to drag eml files from Outlook to a folder. I would like put a file watcher control that monitors the folder. When the new file is added I want to run some javascript in the open intranet window. How can the file watcher app communicate with the intranet app (also there may be more than one intranet app open). I am experienced at asp.net but a total novice to Winforms so bear with me.
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Apr 11, 2012
i have a datagridview i have an edit button associated with each row. on CellContentClick event i am dynamically deleting and creating number of textbox and label controls in my tablelayoutpanel this dynamic deletion and creation of control is taking some time also flickering (well thats not a big issuse)but the problem is if someone continuously keep clicking on edit buttons of various rows after some time the whole tablelayoutpanel is a complete mess.
accordng to me this is happening coz my CellContentClick event is not geting time to complete and before the event get complete one click the edit button of some other row . and i am unable to handle this situation
am adding some more details -
the handler code is here
Private Sub gdXMLDOc1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles gdXMLDOc1.CellContentClick
Try
If lockThis = False Then
[Code]....
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Nov 12, 2009
I have a datagridview that displays text from a cell in a tooltip when text is too long to be viewed in the cell itself. The default length of time, however, is not long enough for me to read all of it.
How can I make the tooltip display for a longer period of time?
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Jan 28, 2011
I am building a program where for part of it the user can enter a parameter which will then query a database and populate a DataTable with the results if the number of results is greater than 1 it will call a "lookup" form to popuate a DataGridView with the DataTable, from this the user can select a row and the result is passed back to the main form or if the result is not there the "lookup" can be closed.
This works fine the first time the parameter is used to query and opens the "lookup" form and populates the DGV, but if the user returns the the main program after using the lookup form and enters a new parameter and the lookup form opens again the DataGridView is not created and populated. But i am 99% sure the DateTable is being populated as if the row count is 1 it will automatically return the single value and this is happening even after the lookup form has been used.
So it is just when the Lookup form is being used a second time the DataGridView is not being popuated or the DataTable is not being passed.
[code]...
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Sep 22, 2009
I add ComboBox column at design mode and I am trying to add Items in ComboBox at run time. How to add Items to ComboBox at form load
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Dec 14, 2010
I am showing some data in a DataGridView using an access table. Here is my
Dim ConnString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=....db.mdb"
Dim SQLString As String = "SELECT * FROM Table1"
Dim OleDBConn1 As System.Data.OleDb.OleDbConnection = New System.Data.OleDb.OleDbConnection(ConnString)
Dim DataSet1 As New DataSet()
[Code] ....
The problem is that there is one column in my access database that is formatted as date/time however the only values in the access is time. When I display this table in the DataGridView, it adds this random date from years ago in front of that time. How do I reformat this DataGridView column to only display the time and not the date?
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May 30, 2012
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;
[code].....
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Aug 18, 2011
Its working for only single row.I got the Error Message is:
"Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index"
Private Sub ViewButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ViewButton.Click
con = New SqlConnection(Constr)
cmdstr = "Select * From Mcdaily where Mcno='" & McnoCombo.Text & "' and Day(Edate)=" & Dtlog.Value.Day & " and Month(Edate)=" & Dtlog.Value.Month & ""
[Code] .....
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Jul 8, 2010
How to use master/details datagridview for the same table in run time?
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