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]....
View 1 Replies
ADVERTISEMENT
Apr 16, 2008
I have a custom datagridview control. I am loading data into it row by row. The control does not resize its cell width to its content. It only does so if I set autosize column property to Fill or AllCells. The problem is I can not use autosize because its killing my performance as I am loading large amount of data into the grid.
The cell does not display the contents completely, it just clips it. e.g for "sampletext" it would display "Samplet..." .
I want the cell to be resized according to the cell that contains the longest string value.
View 3 Replies
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
View 1 Replies
Apr 25, 2011
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?
View 1 Replies
Jan 8, 2010
I have a combobox column in a DatagridView, I was able to bind the column to some values from a database using:
Dim myComboBox = New DataGridViewComboBoxColumn()
myComboBox.HeaderText = "Header name"
imyComboBox.DataSource = myDataTable
[code].....
View 4 Replies
Mar 24, 2012
I have one data grid which contains a column which contains long string values. When I edit it, the text box which appears is very small. I want to increase the length of text box.
View 2 Replies
Nov 26, 2011
What I am trying to do is fill the contents of the datagridview with the cell contents. There are two ways to do this.
1) Either set the DGV width to the cell contents width, or
2) Autoadjust the width of the cells to the width of the DGV.
how to implement either of these two approaches?
View 3 Replies
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]....
View 2 Replies
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
PatientDataGridView.Rows.Add()
End If
View 1 Replies
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.
View 18 Replies
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.
View 3 Replies
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.
i'v been using the following code with the EditingControlShowing event. and when the cell is readonly=false it works sometimes.
Private Sub sub_fecha_keydown(ByVal sender As Object, ByVal e As KeyEventArgs)
If e.KeyCode = Keys.Space Then
Dim frm As New frmFecha
[Code].....
View 1 Replies
Aug 8, 2010
I have a datagridview and the cell gets validated in the validating event;
[Code]...
View 3 Replies
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].....
View 1 Replies
Aug 2, 2011
vb.net
Private Sub DataGridView1_CellValueChanged _
(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) _
Handles DataGridView1.CellValueChanged
[code]....
View 5 Replies
Jul 12, 2009
I am populating a DataGridView from a DataTable with a DataAdapter (VB 2008 Express, SQL 2008 Express). The dgv is for editing (with SqlCommandBuilder) a SQL table. I have added a ComboBoxColumn ("Type"), with a list, and removed the column from dgv ("Reason") who's index it replaces. What I can't figure out is the binding(?) to have the selected text displayed the same value as that from SQL table that is being edited. The ComboBox displays an index of -1, I need the selected text to be the data from row and field which is to be edited. The list is constant. Code so far is below:
Public Sub LoadDgvComps()
Dim myDA As SqlDataAdapter
Dim dsComps As DataSet[code]......
View 11 Replies
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.
View 3 Replies
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?
View 7 Replies
Aug 11, 2010
I have a databound combo box column. When a value in another field starts with an 8, I want to make the combo box read-only and turn the background gray so the user knows it is read-only.
Here is the code I'm using, where am I going wrong? It doesn't change the backcolor to gray.
Private Sub dgvTest_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles dgvTest.CellFormatting
[Code]....
View 2 Replies
Jun 7, 2009
Is it possible to attach a context menu to a oomboxcolumn in a DataGridView? That is I want the context menu to display after the user chooses an item in the combox.
View 5 Replies
Jun 21, 2010
I use:
CODE:
I want to show with the DataGridViewComboBoxColumn two fields from groups table . But i want only link field "articlenb" to column, but a want o show filed "Articlenb" and I want to show fields "groupnb" and "groupdef"
My question is how do this?
Here is my code for ComboBoxColumn, with one field from groups table.
This works well!
CODE:
View 7 Replies
Jan 14, 2011
i am using a Datagridview on my form. It get's it's datasource from a dataset: grd.datasource=set_temp After that I add ComboboxColumns manually. At the end I loop columns and set values into that cells from the comboboxcolumns. Works perfect so far. Now I click on a header and the sorting is changed, and then the cells from the comboboxcolumns all lose their values, they are all empty.
Why and what do I do to avoid that? Or must i refill those manual Values after sorting?
View 1 Replies
May 24, 2011
I have a child form in an MDI application with a datagridview comboboxcolumn. I'm filling it with string values. When I load the form independently of the parent, I am able to set values for the comboboxcells. But when the form is loaded as part of the MDi application, with the same exact code, the cells are empty.
View 11 Replies
Mar 29, 2011
I have a child form in an MDI application with a datagridview comboboxcolumn. I'm filling it with string values. When I load the form independently of the parent, I am able to set values for the comboboxcells. But when the form is loaded as part of the MDi application, with the same exact code, the cells are empty. I've spent hours trying to figure out why this is happening but have no idea.
View 3 Replies
Nov 10, 2010
I would like to be able to show the defaultstyle of the cell in the form load
View 6 Replies
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].....
View 8 Replies
Jul 21, 2011
is it possible to raise EditingcontrolShowing event when we try to change the value of a combobox cell in datagridview
[Code]...
View 3 Replies
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?
View 8 Replies
Jan 24, 2012
I have a GUI which allows the user to select a report to view/edit. When the user selects a report, it shows the Items in the report. The Item has many properties - most of which are binding properly. One of the properties is Owner, and this is bound to a ComboBoxColumn.
Report
Items
Owner
I have done something very similar to this a few times and had no problems when I set the DataPropertyName, DataSource, ValueMember, and DisplayMember. The only difference is that this time instead of the Item type having an OwnderID it actually has an instance of the Owner object.giving the items bound in the list a self-referencing property that allows them to return themselves for the purposes of setting the ValueMember.However, When I bind it this way:
OwnerColumn.DataPropertyName = "Owner"
OwnerColumn.DataSource = ownersBindingSource1
OwnerColumn.ValueMember = "Self"
OwnerColumn.DisplayMember = "OwnerName"
I get a lot of errors like: Unable to cast object of type 'System.String' to type 'Owner'.
and:
The following exception occurred in the DataGridView:
System.ArgumentException: DataGridViewComboBoxCell value is not valid.To replace this default dialog please handle the DataError event.I was able to get around some of these errors by binding it like this:
OwnerColumn.DataPropertyName = "Owner"
OwnerColumn.DataSource = ownersBindingSource1
and also by making the ToString function on the Owner display the OwnerName property. This seems pretty hacky though - and I think I'm misunderstanding something fundamental as it still does not function properly.
View 1 Replies
Sep 22, 2010
With the two lists (t1s and t2s), I want to display t1s in a DataGridView, and in one column show the T2 property as a comboBox column, which dropdown will show the t2s list such that a new list instance can be selected. T2 has a Name property that should be used for displaying it in the comboBoxColumn.
I'm able to display the dropdown, but remaining a few problems:
1. How to display the correct comboBox "selection" on "load"?
2. How to change the T2 child object instance when combobox selection is made?
3. This is a really basic problem, which suddenly happened and I just couldn't understand what I have changed; The code marked BLUE now just shows empty cells.. While the AutoGenerated columns do show values.. Shouldn't those "manual" columns work?
[Code]...
View 29 Replies
