What I want to do is remove the errortext once the data input is valid. I have a code that works perfectly fine. I had run it a number of times and its working properly the whole time. But after I restarted my computer, there seem to have been an error.
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Is there any way to remove the focus from the current cell after edit when I click the row header? I have tried various methods; repainting the row, cell, moving focus to other cell but the caret still remains in that cell.
View 6 RepliesI am trying to check if a cell in a tablelayoutpanel contains anything and if it does; clear it.I tried tablelayoutpanel.removeat(1) but I need to check if there is actually anything in there, or else it throws an error.
View 2 RepliesHave 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.
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)
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Is it possible to disable cursor moving from cell to cell in datagridview?
View 5 RepliesI 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.
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
View 1 RepliesI 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.
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.
View 13 RepliesOkay I have an unbound DataGridView control which users enter as many records as is required. However I have some validation running which checks all cells to ensure data has been entered, however as you know, as soon as data is entered into a row, another appears, well I need to remove this row.
I can't use
vb
DataGridView1.Rows.RemoveAt(DataGridView1.Rows.Count - 1)
As the row has not been committed, therefore it can't be deleted
Also I need the 'enable adding' on, as without it rows will not appears.
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
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Is it possible to remove from a datagrid view very first "column" i.e. the row selector and also to remove the ability to reorder the columns ?
View 3 RepliesI have this code:
If kivertekhossz = 2 And dgvszamlatukor.Rows(ind).Cells(1).Value.ToString.Length > 2 Then<br/>
dgvszamlatukor.SelectedRows(0).Cells(0).Value = My.Resources.S_CLOFOL<br/>
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I have a userform which allows my users to go through numerous comboboxes to select a combination of items they want displayed in a datagridview. My datagridview is populated from sql queries to my database(s), depending on the choices made in the comboboxes. The first column has checkboxes so my user can pick which rows they want to keep. Once they've chosen what they want, they click a button to save those rows into a seperate sql table.
All this works well, but here's my problem. After they click the button to save to the table, or another button which simply clears the datagridview without saving to the table, I want to clear my datagridview. While it seems to work, after all my comboboxes are cleared, and I go through another iteration of choices, and I display all the rows again in the datagridview, I get a second column of checkboxes.
Right now the checkbox column is added right before the datagrid's datasource is set. I've tried adding this column outside the subroutine that populates the grid, but it doesn't work.And I've tried numerous ways to delete this column so it will be regenerated when the datagridview is repopulated. Different things either give me errors or bomb when I compile.how to remove a checkbox column from a datagridview for good?
The user picks x amount of scenarios from the combobox, and x amount of columns appear in the datagridview. If the user changes the number of columns from x amount to y amount, the columns should be added/removed respectively but currently when y amount is chosen x amount of columns are in the datagridview.
I'm not sure how to do this, I've tried using an IF statement under the .SelectedIndexChanged event but the code adds columns until it reaches as high as it can go, then pulls an error saying too many columns.
I have a datagridview binded to a list of objects... I have a column named Selected containing a checkbox. When these checkboxes are checked and a button is clicked, I want those particular rows to be removed. I initially set it out to iterate through the grid's rows and RemoveAt(SelectedRowIndex) but of course when it removes an object from the List of objects at the selected row (IE Row 1, 4 and 6), the list indexes change and it fails to work properly when it goes to remove the next row since Row 4 is now row 3 in the list...? What is the best way to do this?
View 4 RepliesI am using a DataGridView bound to a BindingSource which is itself bound to a List of objects. This all works well until I remove objects from the list. If I am scrolled down to the bottom of the DataGridView and then remove a bunch of items from the list it is bound to it generates a DataError exception because the length changed and the rows I am looking at no longer exist... I changed my code to handle that error, but now instead of popping up a message it SLOWLY erases the data in each of the newly invalid rows at the end of the table (I think each time it does one it generates a new DataError, which is why it is so slow).
How do I prevent this? I want to be able to dynamically (and programmatically) add and remove items from the table without the possibility of this error... I assumed this would be handled automatically as part of the data binding process but I guess not.
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).
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
View 5 RepliesThere 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
View 3 RepliesHow can I get the value of the first cell of the row of the selected cell or selected row in a datagridview?
View 5 Repliesi 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)
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).
View 2 RepliesI 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.
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.
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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]...
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...
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.
View 6 RepliesI 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 _
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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".