Getting The Value Of A Cell Within The Last Row In A Datagridview?
Oct 20, 2010
i have a datagridview which i populate of a dB. i have 3 columns on the dgv Account ID, Account Type and Notes. i created an add record button, that enables the user to add records. Account ID is a numerator in the dB, and i would like to automatically add 1 to the numerator. however i can't get the value of the last cell in the last row. for now i am using
Dim RowCount As Integer = Me.grdAccountTypes.RowCount - 1
Dim AccountID As Integer = grdAccountTypes.Item(0, RowCount).Value
MessageBox.Show(AccountID)
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Dec 23, 2011
Have this code so that when a checkbox in a column of my datagridview is checked, then the corresponding cell in column 2 (of the same row the check box is in) will turn blue with font color white.
[code]...
I'd also like to add a line so that as well as the cell going blue, the bottom border of the cell disappears, so cellborderstyle = none.
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Dec 23, 2011
I have a DataGridView with several columns. One column is a TextBox column named "Status". This column can only show one of three values: 'Final', 'Ready', or 'No Reportable'. I want to have some code that would turn the TextBox cell into a ComboBox cell when the user left-clicks on the cell to allow the user to choose one of these three options. When the user clicks elsewhere or the cell loses focus I want the cell to change back to a TextBox cell.
Here is what I have so far, but the code throws an exception indicated below Plus, I don't think the code would remove the combobox when the cell loses focus.
Exception: "Provided cell does not belong to this DataGridView control."
Private Sub dgvCalculatedResults_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles dgvCalculatedResults.MouseDown
Dim ht As DataGridView.HitTestInfo = Me.dgvCalculatedResults.HitTest(e.X, e.Y)
[Code].....
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Aug 10, 2010
Is it possible to disable cursor moving from cell to cell in datagridview?
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Jul 1, 2010
I have a Datagridview called DgvReturns. which contains two fields,
1) Yes - checkbox (boolean)and
2) Received Date - textbox (DateTime)..
What I want to do at run time is that when a user Checks the Yes checkbox Received Date is populated with the current Datetime.
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Jan 28, 2011
In cellEndEdit event I need current cell editedFormatedvalue ( well it is done) now my question is can we get the old value of the cell in this event or have to handle some other event for this means let I have a cell in which current value is abc and when I edit it it become def now I want to get both the values in cell end edit event ( or any else ) but finally I have to perform task on cellendedit
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Mar 2, 2009
I have a datagridview and it has 8 columns as textboxcolumns. I am handling their cell validation with cellValidating event.
My question is that if cell validation fails for 3rd column of the datagridview then the focus should move from 3rd column to 1st column of the datagridview. How can i do this?
I have tried datagridview.column(0).selected = true, when validation for 3rd column fails, but this is not working. Focus still moves to the next cell. I can stop the focus to the current cell with e.cancel=true but i want it to move to the very first cell of the datagridview.
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Mar 2, 2009
I have a datagridview and it has 8 columns as textboxcolumns. I am handling their cell validation with cellValidating event. My question is that if cell validation fails for 3rd column of the datagridview then the focus should move from 3rd column to 1st column of the datagridview. How can i do this?I have tried datagridview.column(0).selected = true, when validation for 3rd column fails, but this is not working. Focus still moves to the next cell. I can stop the focus to the current cell with e.cancel=true but i want it to move to the very first cell of the datagridview.
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Nov 6, 2010
I have a DataGridView where Cell_Validating is being done. I have a Cancel button on my form that allows the user to exit out of the DataGridView changes. The problem is that if a cell was currently flagged as in error, I cannot exit and remove columns from the DataGridView. I get the following error: Operation did not succeed because the program cannot commit or quit a cell value change. Is there a way to cancel the validation once the focus has been removed from the DataGridView? Here is my Cell_Validating
[Code]...
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Apr 30, 2012
I have just found that if a DataGridView image column's size (height & width - in pixels) is smaller than the image's original size (in my case all images are exactly 180 x 180 pixels) at the time the cell is populated then the image is automatically being converted to a lower resolution I assume to fit the image completely within the size of the cell). How can I stop the automatic scaling of the image?
The image below show the same file displayed twice, both at 60x60 pixels ('Thumbnail' column) and a blowup of the image (PictureBox populated via the CellMouseEnter event) to it's right. You'll notice the resolution of the first blowup is far less the the second. so, what made the difference in the resolution of the blowups is? In the second blowup's case I'd first stretched the image column's width to ~180 pixels and set the row height to match (via the ColumnWidthChanged event) then populated the DataGridView then stretched the image column to 60 pixels (its minimum).
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Nov 18, 2010
I wish to have a list selection inside a cell of it. like when the cursor is placed in a particular cell and the user hits 'Tab' button in keyboard a list of names & no should be listed and they have to select a particular name, click a particular row in the list form, which in turn needs to fill the cell with the name value.m
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Jan 15, 2012
There are 3 columns(Count,Item,Price) in datagridview which is bound to a datasource. The count is 1 by default and it should increment by 1 when i click on a button,so the count would be 2 if i click button again
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Jan 18, 2012
How can I get the value of the first cell of the row of the selected cell or selected row in a datagridview?
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Jan 30, 2012
How to do that no one cell is selected in DataGridView at first moment? (There are some controls in my form before the DataGridView and I don't want that any element of DataGridView is selected when the form is loaded).
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May 18, 2012
I have a datagridview which have a ComboBoxCell, ComboBox is bound to data,, I want to use it as Traditional ComboBox,, I mean I want to display its Item (from display members) on the base of its value.
For example:
When I do this
Datagridview1.CurrentRow.Cells(4).value = 4 'Cell 4 is the DatagridviewComboBoxCell
It gives me the error that
"DatagridviewComboBoxCell.value is not valid",
But I want that this combobox should Select And Display the item which value is 4.
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Mar 9, 2012
I'm using VB.Net.'m using DataGridView with ColumnType = DataGridViewTextBoxColumn.
I have 3 columns. Column1, Column2, Column3. for example:
Column1 Column2 Column3
1 AA AAA
2 BB EDIT
3 CC CCC
If column3's value = "EDIT", then I need to edit only that cell. Here for example: i need to make the Column3's second cell to be readonly=false.So i cannot make any changes to (1, AA, AAA), (3, CC, CCC) and (2, BB). Need to make changes only EDIT cell.I tried this code. CountR is the row in which EDIT values is there.
[Code]...
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Jul 5, 2010
After trying to search this forum and looking in 2 different VB 2010 books
I still don't know how to read a DataGridView cell into a variable.
I think the code should look something like this[code]...
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Mar 23, 2011
how to change the Cell Alignment depend on the conditions. If cell value is text then cell alignment should be Left and If cell value is Integer then cell alignment should be Right.
I am going to change the Default Cell Style property then all cell alignments are changing.. But i want to see if cell value is Integer then the value starts from Right Side...
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Mar 30, 2010
I want to add text to a specific row, column in a DataGridView grid. I have tried several ways to do this bit none seem to work.
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Mar 23, 2012
I have several date fields in a datagridview, in sql these are saved as navchar fields. If the user needs to clear the date they can do so by highlighting the field and pressing the delete key. This clears the date no problem, unfortunately it sets the field to Nothing or "" (a blank). I need it to set it back to NULL for reporting purposes.
Here is the relevant part of the code:
Private Sub dgvWeldingLog_CellEndEdit(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgvWeldingLog.CellEndEdit
Try
If dgvWeldingLog.Columns(e.ColumnIndex).Name = "dgvtxtDateWelded" Or _
dgvWeldingLog.Columns(e.ColumnIndex).Name = "dgvtxtFitCheck" Or _
[Code] .....
If there is an error in the data entry then the form cannot be saved. When I trap DBNull.Value is says it is equals to "Nothing" and not "NULL".
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Oct 5, 2011
Currently I am using this code to fill my datagrid.
Dim da As New SqlDataAdapter("Select id, name, type, add1 from [company_details]", con)
Try
If Pdetails.Visible = True Then
con.Open()
Dim ds As New DataTable
[Code] .....
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Apr 6, 2012
How to get the data I want from a datagridview box. Simply Put, What I need to do is get every value from each cell in a row. So if row one is highlighted I need the Name, addy, and so on....from that row.
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Aug 5, 2009
I have an app where in some of the DataGridViews I am able to easily highlight a segment of text within a cell, do a Ctrl-C, and then paste it into some other app. Only the highlighted text gets copied, which is what I expect.
However, with some of the DataGridViews, I try to do the same thing, but it will copy all of the cell's text, not just the portion highlighted.
I've scoured the cell, column and DataGridView properties and can't figure out what controls that ability.
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Jun 25, 2008
Is it possible to multi select cells in a DataGridView over several rows?
Example:10 columns, 2 rows
Say I click and hold in row 1, column 5. If I then go down to row 2 column 5. I want column 5 to 10 in row 1 and 1 to 5 in row 2 to be highlight.
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Jan 16, 2012
There are 3 columns(Count,Item,Price) in datagridview which is bound to a datasource. The count is 1 by default and it should increment by 1 when i click on a button,so the count would be 2 if i click button again
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Nov 2, 2011
datagridview Ctrl +C in a cell?
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Sep 20, 2011
I am using vb.net. I have following weird problems:If I comment DGVCusClient.Rows.Add(), the cell in ("column1",0) does not display data. But in debug, I can see that the first cell has data assigned.If I do not comment DGVCusClient.Rows.Add(), the cell in ("column1",0) displays its data correctly. However, it adds the row on the top for the first time. Except for the first row, it adds rows to the bottom as usual.
Dim i As Integer = DGVCusClient.CurrentRow.Index
If Not ContainRecord(tempCusid, tempCltid) Then
Dim i As Integer = DGVCusClient.CurrentRow.Index
DGVCusClient.Item("Column1", i).Value = "a"
[Code]...
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Apr 29, 2011
How can I delete a cell value in DataGridView?
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Mar 9, 2009
I have a DGV with a Button Column. I need to be able to disable or freeze a single cell (or cells) in that column so that its button can't be clicked, but I haven't found a way to do it. It this possible?
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Apr 4, 2010
I have a datagrid with planned orders for loading (like the flight schedules at airports). If the status is "ready for loading" I would like that value to flash based on a timer. I managed to do it with text on a button, but because this is a datagrid it is more difficult for me and I am a bit confused.
Here is what I have for code;
Private Sub OrderOverviewDataGrid_CellFormatting(ByVal sender As Object, ByVal e As DataGridViewCellFormattingEventArgs) Handles OrderOverviewDataGrid.CellFormatting
If Me.OrderOverviewDataGrid.Columns(e.ColumnIndex).Name = "Status" Then
[code]....
Everything works fine. The column "Dock1" has the right color and the statuses have the right colors to, but; I want the "Ready for loading" status to blink based on Timer_2 which I have put on the same form.
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