The real datagridview cellvalidating net like

Sunday, April 01, 2018 by Bone

Change The Value Of A Cell In DataGridView.CellValidating Event?

Sep 8, 2011

I handle the validation in the CellValidating event, and if the cell is invalid display an error message, then cancel the exit of edit mode. However I would also like to erase the content of the cell currently in edit mode.

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Sql - Validate Datagridview Using The Cellvalidating Event

Jun 5, 2009

I have a datagridview that I would like to validate using the cellvalidating event. however as the user doesnt navigate between cells or rows in the datagridview. just enters data in a cell in the datagridview and then clicks a save button the cellvalidating event doesnt get fired.

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Change Cell Color Of A Datagridview On The Form Load Event?

Nov 10, 2010

I would like to be able to show the defaultstyle of the cell in the form load

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Raise EditingcontrolShowing Event When We Try To Change The Value Of A Combobox Cell In Datagridview

Jul 21, 2011

is it possible to raise EditingcontrolShowing event when we try to change the value of a combobox cell in datagridview

[Code]...

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Datagridview Cell Value - Get The Old Value Of The Cell In Event

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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Cell Change Event In Excell?

Jan 12, 2010

Is there any way so I can get event when moving cursor in excel sheet. What I meant by that if cursor is in cell A1 then I move to B1 at that time I want cell change event should fire. At the movement I am able to get event when you change the cell value and press enter then I can get the cell change event.

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How To Change Cell Original Value In Formatting Event Of DGV

Aug 25, 2011

I'm developing application in VB.NET 2008. Whatever I'm formatting cell that should reflect on original value. In Cell Formatting Event, e.Value=format(e.value,"0.0") means it is formatting data but original value is not changing on cell.

But I tried like this
Private Sub DataGridView1_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles DataGridView1.CellFormatting
With DataGridView1
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End If
End With
End Sub

It is working for normal datagridviews but if I do the same for databound datagridview , data are flickering... (i,e cellformatting event is executing always). How to change original value of cell in cell formatting event ?

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Datagridview Cell Textchanged Event?

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I was wondering if there's an easy way to make a cell textchanged event for a datagridview, like you have the textchanged event for textboxes, an event that gets triggered everytime the user press a letter/number/symbol/backspace/space, so i can check in that event if the datagridview has changes and whether i should enabled my save button to save the changes made.

Or is there a better way to check whether i need to enable my save button?

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.net - DataGridView Cell Click Event In VS 2010?

Jan 7, 2011

why the first code block below works, but the second code block does not? (Only thing I can see is the

Handles DataGridClaims
syntax
Block 1
Private Sub DataGridClaims_CellContentClick_1(ByVal sender As System.Object, ByVal e As

[code]....

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Add New Rows In Datagridview When Cell Leave Event?

Jun 2, 2011

I want to add a new rows when cell leave event occurs.It shows error like Operation can not be performed in this event handler...

here is my code,

If PatientDataGridView.CurrentCell.ColumnIndex = 2 Then
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End If

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Create An On-KeyDown Event For A Datagridview Cell?

May 24, 2010

I'm using an on key down event for my datagridviewer that fires every time a key is pressed while the datagridviewer is selected(Focused).I want the same thing to happen while in a cell, but there is no event for key down in a cell.

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DataGridView - ReadOnly Cell KeyDown Event?

Nov 25, 2011

i have a datagridview with a readonly cell, i would like to show a formdialog window when the user press the space key. but is not possible since the cell is readonly=true.

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Private Sub sub_fecha_keydown(ByVal sender As Object, ByVal e As KeyEventArgs)
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Dim frm As New frmFecha

[Code].....

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I have a datagridview and the cell gets validated in the validating event;

[Code]...

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DataGridView Cell Click Event In VS 2010?

Jul 28, 2011

I am a tad new to the DataGrid controls, but I am just curious as to why the first code block below works, but the second code block does not? (Only thing I can see is the
Handles DataGridClaims syntax

Block 1
Private Sub DataGridClaims_CellContentClick_1(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridClaims.CellContentClick

[code].....

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VS 2008 Datagridview Cell Value Changed Event?

Aug 2, 2011

vb.net
Private Sub DataGridView1_CellValueChanged _
(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) _
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[code]....

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Change A DataGridView Cell Attributes?

Apr 25, 2012

I have a datagridview in which I am dynamically creating the rows and columns. I'm trying to set specific cells font to bold and not sure how to do it!Below is my code and what I'm trying to do.

[Code]...

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Change Cell Backcolor In A Datagridview

May 15, 2010

I would like to change the backcolor of the cell in a row based upon the value of a checkbox in another cell. The value of cell 2 would be a checkbox, so it is either true or false. If it is true, then color the backcolor of just cell 1?

If MyDataGridView.Rows.Count > 1 Then
For Each orow As DataGridViewRow In MyDataGridView.Rows
Console.WriteLine("DK {0}", orow.Index)[code]......

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DataGridView - Change Cell Color If Particular Value?

Apr 26, 2010

I have a bunch of columns in a datagrid view (date, transaction type, amount).If the amount in a row is '150.00', I want to make that cell red.I made a Private Sub and run this after the datagridview is filled.

Private Sub ColorCells()
Dim ColumnCount As Integer
ColumnCount = dgvLedger.ColumnCount - 1[code].....

However it seems to have two bugs. When it is first run the first time when the form is loaded, it doesn't put the rows with 150.00 in it in red.If I have a button on the form and set it to run this Private Sub, then it runs through it again and will color the ones in 150 as red.If I resort the datagridview by clicking on a column, they all return to green again, and it looses the formatting.

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Jan 31, 2011

I have retrieved data from access database into a DataGridView .Let us suppose i am in Row 0.When i change the Contents of Row 0 Cell 1 and press a button the Update query should modify that row but i am unable to modify the value of the cell.The cell maintains it's previous value and the database is not modified .For example if i change the contents of a cell from "David" to "Jhon" how can i change the value of the cell from "David" to "Jhon". I am using VB .Net 2008. How can i get the text changed in a particular cell of a DataGridView

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DataGridView Cell Value Change Not Happening?

Jan 31, 2011

I have retrieved data from access database into a DataGridView. Let us suppose I am in Row 0. When I change the contents of Row 0, Cell 1 and press a button, the Update query should modify that row, but I am unable to modify the value of the cell. The cell maintains its previous value and the database is not modified. For example, if I change the contents of a cell from "David" to "Jhon", how can I change the value of the cell from "David" to "Jhon"? I am using VB.NET 2008.

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C# - After Which Event Should Perform An Action After Editing A Cell In A DataGridView

Mar 24, 2010

I have a WinForms DataGridView control on a form. There are two fields in this DataGridControl:

Email Address
Resolved Email Address (calculated based on the input in Email Address)

After the user inputs or changes a value in Email Address, I want the value in Resolved Email Address to update based on a separate method. What event should I tie in to so that that the Resolved Email Address cell is updated after the Email Address cell is updated?I'm not sure where to put the event because the user could do a number of things after adding/changing a value: tab to the next cell, click cancel on the form, click ok on the form, etc.

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Comboboxcolumn In DataGridView With An Event That Autosizes Cell Width

Nov 25, 2009

I have a comboboxcolumn in a DataGridView. I have loaded int with string data that appears in the dropdown box. I have added an event to it for an SelectedIndexChanged. What I am trying to do is autosize the width of the cell in the column based on the string chosen in the drop-down box within this SelectedIndexChanged event. This seems to work but it does not work off the initial selection change. When I select the desired string in the dropdown box the width of the cell does not autosize. I am not sure why.

I was trying to get around this by wrapping an IF stmt around the autosize logic by saying if cell value = "" then cell.width = Max Width of all loaded strings/ However, I can't figure out how to access the string array loaded into the dropdown list

[Code]....

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DataGridView - Trigger Event When Type Something Wrong In Cell

Jun 1, 2011

I want to have one event triggered when I type something wrong in the cell in the specific column in the datagridview. What event should be? Or cell leave?

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Change A DataGridView Cell Value For Entire Column?

Jul 3, 2011

I need to pull data from a database into a DataGridView, problem is the status field is stored as a 0 or 1. Not very useful to the end user.ere is my datagridview;

Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Try

[code].....

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Pass Cell Location Of DataGridView To An Event Handler Via A ContextMenu?

Nov 20, 2009

I have a context menu which is shown over a DataGridView as follows below. The Context menu is shown if the mouse up occurs over the second column of the DataGridView. I also have a bunch of event handlers set up for each item in the context menu. I now want to pass the location of the cell in the datagridview to the event handlers.Do I have to pass the NewPoint() to a public variable and then translate that into a cell location within the event handler?

Private Sub DataGridView14_MouseUp(ByVal sender As Object, ByVal e As MouseEventArgs) Handles DataGridView14.MouseUp
Dim hitTestInfo As DataGridView.HitTestInfo

[code].....

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VS 2010 DataGridView - Event When User Edits Checkbox Cell?

Jun 6, 2010

I'm afraid this is a very simple question, but I can't figure it out... I hardly ever use the DataGridView (usually use a third party grid) so I never needed to do this before.Anyway, I have a DataGridView that is data-bound to a List(Of SomeClass). The grid is not ReadOnly, but I made every column ReadOnly except the very first, which is a boolean column so it displays a checkbox. This way, the user cannot edit any cell value, but he can check/uncheck the checkbox in the first column.

What I need now basically is an event that is raised when the user (not programmatically) changes the value of this checkbox. I also need to be able to retrieve the bound item from that event (from the row number I think?) but that should be no problem, I hope.Anyway, there's a bunch of events that looked promising but all have something I don't want:

1. CellBeginEdit - Fires before the checkbox value has changed, so can't use this.

2. CellEndEdit - Only fires after the edited row loses focus. I want to save it back to the database as soon as the user changes the checkbox value!

3. CellValueChanged - Same problem as nr 2.

I'm sure it must be possible for me to react as soon as the user changes the value of the checkbox? How can I do this?

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Change Behaviour Datagridview Cell When The Form Loads?

May 10, 2012

if i want to make a change to a cell in a datagridview when the form loads, how would i go about doing this?

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Change Cell Background Color Programmatically In A Datagridview

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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Change Cell Contents At Runtime - Winforms DataGridView

Dec 8, 2011

I have a DGV I am working on, and I have many columns.

For example I have Columns colIsDayOff (Checkbox), colStartTime(Time), colEndTime(Time)

What I need to do is if when my DGV loads the data if colIsDayOff is checked, then make the value of the Start and End time columns blank, invisible, or something.

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Change DataGridView Cell Color Based On Other Columns?

Apr 25, 2007

I have a DataGridView that has been dragged over from the DataSource Tab. All works good.I need to have the background color of some of the cells changed based on other columns in that same row. Such as, have the background color of a cell Red if the Status column (not shown) relates to 90 days overdue. The next row may be different.

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