Programmatically Edit My Datagridview Cell Values?
Mar 15, 2012
I programmatically edit my datagridview cell values. I use the vertical scrollbar to find the row I want to edit, select the row then click an edit button that takes me to another form where changes to the record are made. I then click a button which saves the changes and returns me to the datagridview form. No problems here.
When I return to the grid, the records are displayed with the first record at the top of the grid. That is, the vertical scroll bar has repositioned itself to the very top.
Is it possible for the datagridview to "remember" the position of the vertical scroll bar so that when I am returned to the grid, the rows displayed are the same as when I left?
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May 4, 2011
I have problems trying to change programmatically the content of a cell of a bound DataGridView.I implemented a minimal piece of code to show the problem.Do the following steps to replicate the problem:
Launch example
Write the title content to create a new row
CTRL+C on inserted title
[code].....
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Feb 16, 2012
I tried alot of things to achieve this but sadly no positive result.How can I set a cell to edit.[code]The focus is on the right column and the right row (DataGridViewComboBoxColumn). But it is not in edit mode (the symbol in the the rowheader is an arrow (select) and not the pen (edit)).When I tab to a textcell I can just type the values. But on the DataGridViewComboBoxColumn I have to press F2 so its in editmode.
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Aug 15, 2010
I am using Visual Basic 10/I have 2 datagridview tables. The main datagridview can be edited by the user; adding/removing rows, changing data in text/combo columns, sort, etc. 2 columns from the second datagridview are a carbon copy of 2 columns from the main datagridview. I have achieved this by binding both datagridviews to a dataset. So that when I edit the main datagridview the effects are automatically replicated in the second datagridview.
Before I bound the datagridviews to the dataset I had a fully functional system to save the content of the datagridview to a text file and read it back in. This has now stopped working with the error message 'Can't edit a bound datagridview programmatically'.
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Dec 7, 2011
I programmatically create a datagridview in my program. When the user first enters the datagridview with the mouse, the cursor changes to edit mode (thin vertical line) regardless of which cell is entered. I just want the cell highlighted (in selection mode I assume) as issubsequently done when the cursor is moved to a new cell.
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Aug 2, 2010
I have a DataGridView in which one column has data that the user needs to align by adding spaces. For example, the first two rows might contain:
kumbu
kuimbiu
And the user needs to be able to line up the letters that match by adding spaces. Something like this:
ku mb u
kuimbiu
Now in order to do that with the DataGridView, the user must enter edit mode in the top cell, add spaces, hit enter, re-enter edit mode in the bottom cell, and then add spaces. Our users would like to be able to, while in edit mode in the top cell, hit the down arrow and advance to the second cell while staying in edit mode, saving clicks or F2 hits.
Is there a good way to do this? I have tried trapping the down arrow key press, leaving edit mode, advancing a cell, and then entering edit mode with the grid's BeginEdit method, but this does not do what I want.
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Jun 8, 2011
My code is this:
Me.Validate()
Me.CFTINVENTORYBindingSource.EndEdit()
Me.TableAdapterManager.UpdateAll(CFTDataSet)
At first I can insert data into the cells and save it... but when I try to edit the same cell with data already saved in it I get this error...
sqlcelexception was unhandled
There was an error parsing the query.
[ Token line number = 2,Token line offset = 29,Token in error = , ]
I also get the same error when deleting an already saved cell with data.
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Sep 25, 2009
I have a main form with a DataGridView populated from an Access Table.So far so good.When the user clicks on a row a small form pops up and the the user can enter/edit for 2 specific fields .After that hitting the save button an update query ensures that the data are written back.Because the base table is big i don't want to refresh the dataset (at least i don't want to have the user wait for a good amount of time for a simple change.......this is acceptable only when the application is starting) and i thought given the fact that the changed data are just a few words to "edit" the datagridview cell i want so that it displays the changes.BUT i can't do that.As soon as the 2nd form where the user enters the details the DGV from the main form is unaccessible.When i try to get access to it i have a nice message "Reference to a non-shared member requires an object reference."I tried to make a object reference but nothing ...
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May 21, 2010
I have a datagrid with first coloumn as combobox and second one as textbox. The combobox had datasource with displaymember and valuemember. The problem is when i try to retrieve value from database and put it into the grid i get exception
[Code]...
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Jun 5, 2012
When user unchecks the checkbox for the datagridview row, messagebox displayed, if the user answers yes the row is deleted, if the user answers no then I need to re-check the check box. however it doesn't actually check unless i click anywhere on the datagridview afterwards. get the dgv to updated?
Private Sub DataGridView2_CellValueChanged(sender As Object, e As DataGridViewCellEventArgs) Handles DataGridView2.CellValueChanged
If e.RowIndex <> -1 Then
[Code]....
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Oct 26, 2009
I'm having trouble with setting a datagridview's cell in edit mode, or rather, to let the user type some input on load of a form (as in Excel or the like).
This is my code (after the dgv has been filled):
dgvTentander.EditMode = DataGridViewEditMode.EditProgrammatically
'(or dgvTentander.EditMode = DataGridViewEditMode.EditOnEnter)
dgvMyDGV.CurrentCell = dgvMYDGV.Rows(lastrow).Cells(TeCOL_Quant)
dgvMYDGV.BeginEdit(True)
The code correctly indicates that the cell is selected, and when the page is loaded I can still se the cell selected, but the cursor doesn't appear and nothing happens when I type.
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Mar 3, 2010
I have a datagrid view with 8 columns. How do I change the background color for any cell in columns 2-5 where the value equals the value in column 8. For instance:
[Code]...
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May 5, 2010
How to programmatically change foreground color and make bold text in individual cell location on DataGridView control (Visual Basic)?
I use "dgMatrix.Rows(r).Cells(c).Value = x" to assign individual numeric values to individual cells in a DataGridView control. My question; is there a similar way to change foreground color and make bold the text in this cell, by specifying the individual row/column cell location?
For example; for cell (row 3, col 5) in the DataGridView make text in cell say red and bold or blue and bold so as to highlight and distinguish individual cell contents. As needed, I will also need to reset these properties (foreground back to automatic/black and font from bold back to regular); the reset could be done globally to the whole DataGridView as opposed to indiviaually by cell.
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May 15, 2011
I'm using a Datagridview to fetch information from an XML. Each row contains a separate entry. I can read from and append to the XML database, but I want to:
A) Be able to save any edits made in the database to an XML file.
B) Store and fetch a collection of possible variables to populate a list box.
A should be relatively easy, but I don't know if B is. The XML database will contain hex values that can be written to predefined offsets, and each could be any number of bytes long. So one entry in the XML/Datagridview database could read "00,0A,0B,0C", where commas separate available write values, with each possible value being another line in a listbox. When a value is picked from the listbox it will be written to the XML.
I don't want to have to make <ListBoxValue1>, <ListBoxValue1> in the XML for each possible entry, so I'm hoping there's a more efficient way.
If you're interested in what I'm making, it's a hex editor that loads descriptions of offsets from an XML, then loads the values for each offset from a file. Here's a screenshot.
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Jun 2, 2011
I have a items in my database named as
product number | product name | dosage | description | price | remaining box(es)
0023 amoxicillin 50mg none 50 50
i am having problem in my buy button. how can i manipulate the value in the remaining box(es). for example, i select the item named amoxicillin, and i entered 5 on my textbox. when i press the buy button the value in remaining box(es) will be 45.
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Nov 29, 2009
I am trying to retrieve cell values from a datagridview.I am trying to use the DataGridView.Item().Value property to pull each cell value into a temp variable to it can be added up, but for some reason it is not accepting any variables that I use to count the rows, only integer values.Here is an example of the code I am using.
Dim tempVariable as Decimal
Dim i as Integer
Dim Total as Decimal
[code]....
For some reason it does not like the variable i, and only wants integer values.
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Nov 19, 2010
I have a DataGridView with 3 columns (metric_key, metric_name, metric_value).There are for example, 6 ROWS in this table (6 different metrics), added programmatically (DGV is not bound in any way)
Now, when I assign values in my grid I do:
dataGridView1.item("Metric_value",0).value = "value of the metric in row 0, in the column named "metric_Value".
[Code]...
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Jun 5, 2011
I have a project due tonight and suddenly 2 of my datagridviews are acting funky while the others are fine.
I have 2 tables in an sqlce db. the first is books(id, title, copyright) and the next is publisher(id, name, bookid). I'm writing a vb.net frontend to access the data.
I have data bound datagridviews for both tables. Both have their respective ID columns hidden. The publisher dgv uses a combobox cell style to display the book title in the bookid column. So far so good.
I have suddenly run into a problem where if I have clicked in a cell on the books dgv and then click a cell on another row, the title changes to the id value. The publisher dgv also updates to show the id instead of the title.
It sounds to me like there may be a problem with the booktableadapter or bookbindingsource, but I don't know where to start looking for it. I have a 3rd dgv referencing an unrelated table, and it has no problems. The code for both the working and problematic dgvs are the same (only the control names are different).
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Jun 22, 2010
I have an excel file SpeedStudy.xls located in (C:/files). I need to extract specific cell values to be displayed in a DataGridView.
For example:
I need the value of Cell: B6 to be displayed in the DataGridView under the Road column. How can I retrieve cell values?
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Oct 6, 2010
This is bugging me. I have a "main" form named frmMain with a DataGridView object named objDataGrid.When a user double clicks on a row or clicks another button, I hide the main form, open a new form and want to reference the values in the row selected by the user but I keep getting an error when I try to access some, but not all, of the datagridview's properties.
[Code]...
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Jan 12, 2009
I want to make a certain column of my datagridview red based on values from 2 other columns. I have a "HI" column, a "LOW" column and a "Result" Column which are all strings. Now I want to make the result column red if it's values is less than the "LOW" columns value or if it's value is greater than the "HI" columns value. I tried the following code but something is wrong because cells that shouldn't be red are red:
Private Sub dgvTests_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles dgvTests.CellFormatting
If dgvTests.Columns(e.ColumnIndex).Name.Equals("Result") Then
Dim RowValue As DataRow = TestTable.Rows(dgvTests.CurrentRow.Index)
[Code] .....
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Nov 29, 2011
in VB.NET DGVedit mode, after press ENTER to move the active cell into the desired cell, notdirectly move to the next line, how is it?
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Mar 20, 2011
Im working with a DataGridView with an imported CSV file where the values are delimited with (,).. The grid works perfectly fine. My ultimate goal is to hide the grid out of view from the user and access the data in the grid based on the coordinates of the grid specified i.e (The cell in column 5, row 6 contains the value "Taco") and I want to save that value to a variable...Eventually I want to loop through all the values of a column and save them to individual variables to be later used. So far, this is what I have...
Dim sReader As New StreamReader("book1.csv")
Dim Record() As String
For x As Integer = 0 To 17[code]....
Presently, that will only display the data in column 0, row 0 in those labels...
Note: 17 in the for loop is the amount of columns in the data i provided.. that number will never change.
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Mar 27, 2009
how to "programatically" set an active cursor within a datagridviewcell?my requirement is, when a row is selected in a datagridview control, the corresponding "Value Column" textbox cell goes into edit mode.the DataGridViewTextBoxCell object as a "IsInEditMode" attribute, however, no obvious way to put that cell into edit mode.
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May 30, 2010
I'm using a matrix DataTable bound to a DataGrid. Cell edits aren't committed to the DataTable until a different row is clicked. How can I commit changes when any cell gets focus?
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Jan 10, 2009
I'm using the datagridview. This is the sample data:
[Code]....
How do I parse through the grid to rename the duplicate values in a particular column (in this example it's the l_name field) into such a format?
[Code]....
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Feb 9, 2009
I am trying to test certain cell values to see if they contain subtrings of a certain format at the END of the cell sting value.E.G.I have cells with the values...
324f5
346-ssth
4565-Q1-09
dsfsd46
[code].....
I want to run a macro that searches through the cells and tests to see if they have a substring sitting at the end of the value that is in the format "-Q[number]-[number][number]" OR "-[3 LETTER MONTH ABBREVIATION][number]-[number][number]" OR "-[3 LETTER MONTH ABBREVIATION][number][number]-[number][number]"and then if the test is true, the cell color is changed to RED.So if I ran the macro on the example I gave above, it would turn the cells with the following values red:
4565-Q1-09
454354-FEB2-09
546-5-MAR03-09
I can do all the VB side of things but I don't know Regex but know it would help. I'm in a bit of a rush to finish this job for work because I finish working here in 2 days and need to get it done before I leave!
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Feb 6, 2012
In Vb 2008,DataGridView Witout Datasource Link......
Private
Sub DataGridView1_CellEnter(ByVal sender
As Object,
[code].....
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Nov 25, 2011
How do I validate the cell's value during edit? I've been using the CellEndEdit Event and using this code as its condition
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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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