DataGridView :: Which Event To Use In Selecting A Row

Feb 14, 2010

I have a bound datagridview containing 4 columns. All I want to do is click on a row and then assign the value for each column to other controls (in this case textboxes). My problem is, I'm not sure which Event to use. I don't know how many events I've tried the code below in several different events but none of them are working.[code]

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Programmattically Selecting A Row In Datagridview Won't Fire 'selectionchanged' Event

Jul 26, 2010

I have a datagridview and some code that will seek out the appropriate row and select it programmatic.

For intIndex As Integer = 0 To ofrmMasterList.dgvMasterList.Rows.Count - 1
If ofrmMasterList.dgvMasterList.Rows(intIndex).Cells(0).Value = strMasterID Then
ofrmMasterList.dgvMasterList.Rows(intIndex).Selected = True

[Code].....

The above code works like a charm, except that my selecting of the right row does not fire the datagridview 'selectionchanged' event like it would normally do if I just clicked on it manually.

what I need to do to get the grid to fire off this event after selecting a row with code instead of a mouse click?

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Textbox_Leave Event When Triggered By Selecting Different Tab In Containing Tab Contol?

Aug 12, 2010

I have a textbox in a tab control and iv'e coded the textbox_leave event to show a msgbox and reselect the textbox if the text doesn't meet certain conditions.

Private Sub TextBoxChaseTime_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBoxChaseTime.Leave
If IsDate(Me.TextBoxChaseTime.Text) Then
Me.TextBoxChaseTime.Text = Format(CDate(Me.TextBoxChaseTime.Text), "hh:mm")[code].....
(Reselecting the textbox is the only way i can find to efectively cancel the leave event - is there another)

I've also added a line to also reselect the tabpage incase the textbox_leave event was triggered by selecting a different tab in the tabcontol.However, when the textbox_leave event is triggered by the user selecting a different tab the textbox_leave event seems to be triggered several times displaying the msgbox four times.why this is, but it seems to be caused by the by the line that reselects the tabcontrolhow to stop the msgbox being shown more than once Interestingly, if i add a line to change the text in the text box to meet the conditions the msgbox is only shown once, but the tabpage is not reselcted

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Generate An Event When Selecting A Drawn Line?

Apr 24, 2009

Currently I have not found a way to generate an event when a user clicks on a line that is drawn in my workspace area. The line that is drawn is created by calling the function e.Graphics.Drawline(Connector,X1,Y1,X2,Y2), where Connector is a System.Drawing.Pen object and X1,Y1,X2,Y2 are integer coordinates of the two points to draw the line between. I have not found any events such as Click that are associated with the line that I can use. Do I need to create a custom event for these lines if so how do I go about this?

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Setting Focus To Control In Selecting Event?

May 29, 2009

The following code (VB 2008 .NET 3.5) failes to move focus to the combo box. How can do it?

Private Sub TabControl1_Selecting(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TabControlCancelEventArgs) Handles TabControl1.Selecting
If cbOrderType.SelectedIndex = 0 Then

[code]....

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VS 2010 Selecting All Buttons Mouse Hover Event In A Form?

Mar 27, 2011

Can I select all buttons in my form on mouse hover event in few lines only?I want to add hover sound effect on all buttons when hovered.

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Selecting A Row In A Datagridview?

Dec 5, 2010

I Have a problem with selecting a row in a datagridview. I want the user to press on the data rowheader of the data gridview of a particular row and then that rows first item are put in a string. But the problem is that if i Select an item another item is still selected. So If I press the mouse button on the row header the previous item is still selected and then the wrong data is in the string. Here is the code under the event of the datagridview mouse click:

Private Sub dataGridView1_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs) Handles DataGridView1.MouseDown
Dim hit As DataGridView.HitTestInfo = DataGridView1.HitTest(e.X, e.Y)
Dim index As Integer

[code]....

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DataGridView - Selecting Row After Sorting

Sep 29, 2011

I have a datagridview that is bound to a dataview. I use a textbox to sort the list of data in the datagridview. Once the list is sorted I want to click on a row to populate the textboxes in order to update the data. Problem is once I sort the data I click on say row 3 and it pulls up the orginal data before the data was sorted in the datagrid view. For instance:

Before Sort:
1. betsy
2. james
3. john

After sort:
1. john
2. james
3. betsy

If I double click row 1 it will pull betsy info into my textboxes instead of john. I currently refresh my datagridview after every letter is entered into my textbox. I also reload my dataview and rebind the dataview with the datagridview.

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DataGridView - Selecting Row And Getting Value Of Cell

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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VS 2010 Selecting A Row (DataGridView)

Jul 29, 2011

I try to select the last row like this:

Dim lastRow As Integer = DGV.RowCount
MsgBox(lastRow)
DGV.Rows(lastRow).Selected = True

The messagebox returns the correct number, but when it comes to select that row it says:Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

But if I assign it a row, example: DGV.Rows(5).Selected = True

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DataGridView And Checkboxes Re-selecting Automatically

May 24, 2010

I have a strange problem with a DataGridView I'm using which is bound to a table in VB.net

I've added a checkbox column to allow a user to tick a bunch of rows that I can then loop through and save off to a different table. All the checkboxes are enabled by default. So it's really a case of unchecking the rows which aren't required.

However, the DataGridView re-enables any checkbox that I click after I click on a checkbox in another row. So in effect, only one row can be unchecked at a time.

EDIT: I forgot to mention this is a Windows form, not an ASP.net application.

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DataGridView And Selecting Multiple Rows?

Jul 9, 2009

I have a DataGridView that is being populated. What I'm trying to accomplish is when I select like 3 rows I click a button and it gives me the "row numbers" for those three rows.

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Selecting And Deselecting All Checkbox In The Datagridview?

Sep 30, 2009

I have this datagridview on form1. It can select the items that be selected. But the problem is I want to select all the items. Here is the code that the datagridview can select one by one:

Dim i As Integer
Dim ds As DataTable = CType(DataGridView1.DataSource, DataTable)
Form1.TextBox1.Text = ""

[code].....

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Selecting Full Row Of Datagridview On Form_Load?

Mar 1, 2010

how can i select full and first row of datagridview in vb.net on form_Load

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VS 2010 Datagridview Column Selecting?

Oct 25, 2011

Is there a way to make a column unselectable? I can make the column read-only but it would be easier if it was unselectable so the user won't be confused trying to enter data into a read only cell. So if I clicked on a cell in that column or moved into that cell in that column it would jump to the next column, or not focus on the cell at all.

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Selecting Child Object From ComboBoxColumn In DataGridView?

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]...

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Selecting Data In One DataGridView Based On Selection In Another?

Oct 5, 2009

NB: I'm using Visual Basic.NET?My form has 2 DataGridView controls. One of these is bound to a DataSet, the other isn't visible - at least not until the user selects a uniqueidentifier cell in the 1st grid.When the user makes this selection, the 2nd grid will become visible and display the row from another with the same id as the one selected in the 1st grid.So, basically, I want to dynamically display data in one grid based on user selection in another grid.My code looks like this so far...

Private Sub RulesGrid_CellClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles RulesGrid.CellClick
Try
FlagsGrid.Visible = True

[code]....

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Use Checkbox For Selecting Multiple Rows From DataGridView?

Sep 24, 2011

I have created a bound DataGridView and then added an unbound checkbox (name=select) for selecting multiple rows. The problem I'm having is the row doesn't actually get selected when I set .selected to true which I'm doing in the CellValueChanged event. When I trace it the code is properly executed but the row is not highlighted when the checkbox is checked and consequently not selected in the grid.There is no mouse or keyboard and the input device is a USB button panel which we built.

Public Sub dataGridView1_CellValueChanged(ByVal sender As Object, ByVal e As DataGridViewCellEventArgs) Handles DGV_Categories.CellValueChanged
If DGV_Categories.Columns(e.ColumnIndex).Name = "Select" Then

[code]....

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Selecting Single Cell Data From Selected Row - DataGridView?

May 15, 2012

I have a datagridview with data in it, i have set it so you can only select the row and one at a time.However, i need to get the data from one of the cells in the selected row, i have tried this

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Forms :: Selecting Datagridview Cell Data In Reference To Row Index

Aug 6, 2011

I've been looking everywhere for an answer to a simple question, but i'm having issues, so i thought i'd join and post here. I'm having issues with a simple concept. I load information from a SQL database, and i want to add a 'Passport' link URL relating to column cells called 'name'. It basically selects the name, and inserts it into the link fields to be opened. But i cant find a way to work it. I thought i could do it with something like:

[Code]...

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.net - DataGridView & ComboBox Event?

Nov 16, 2009

Using VB.Net, I have a DataGridView with a ComboBox Column. What even do I use for when the user changes a selection in the ComboBox?

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Datagridview DefaultValuesNeeded Event

Mar 1, 2007

I can't seem to find the exact answer I am looking for. I have a datagridview control on a form bound to a binding source. I want to use a binding navigator to control the additions and deletions of rows. I also need to prompt several default values when a new row is created.

I can accomplish this task if I allow the user to add new rows. When the row is added, my default values are loaded through the DefaultValuesNeeded event. However, the click event on the Add Item in the binding navigator does not call this event. How can I force this event to be raised when clicking on the binding navigator add item button?

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DataGridview Doubleclick Event?

Sep 13, 2011

How do I set the all data in the datagridview goes into the textbox?For Example Fields name.LastName the data will be shown into lastname.text , FirstName will be shown into the firstname.text and also the other fields into the sql database.And how also to can not type into the datagridview or will be disable to type in every cells.

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Datagridview.Selectionchanged Event

Oct 28, 2009

i got another problem with this selectionchanged event in datagridview1, i set my datagridview1 to Selectionmode = fullrowselect.

the problem is i got nullreferenceexception error whenever i clicked the column header, so meaning selectionchanged fire when i click the columnheader since columnheader will have a row value of null the exception appears, i tried to catch it but ending up in messy situation which the code i written doesn't run right. is there anyway to prevent user from clicking column header but it still visible? but if i do that user cant sort the data right. [Code]

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DefaultValuesNeeded Event Of The DataGridView?

Jul 26, 2010

I have found a problem with the DefaultValuesNeeded event of the DataGridView Setup a form with single DataGridView and add 2 columns using default names. Go into form design and in the Form header write a Dim I as interger line Create a DefaultValuesNeeded event for the grid and enter the following code.

[Code]...

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Is There Any Event In Datagridview Like Dgv_TextChanged

Oct 5, 2011

Is there any event in datagridview like Dgv_TextChanged. Like When we double click on a textbox it create a Textbox1_TextChanged event. Actually i want that, when i start writing numeric value in datagridview cell, it start calculating in another cell, as we write in textbox it start acting/calculating with the each inserting value in another textbox.

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Capture Event When Value In Datagridview Is Changed?

Apr 2, 2010

I've been searching all over and I'm either not searching for the right words or it just doesn't exist. I've got a datagridview (dgv) on a form with some textboxes that are databound to different fields in the dgv's datasource. I want to capture an event if someone changes a value through one of the databound controls so I can mark the row as modified. I've been going through the dgv events trying to capture something, but I can't find anything that fires when a value is changed. The dgv is read only, so the values can only be changed through the databount textboxes.

How to I know if someone changes a value in the dgv? Is there a setting in the dgv that will tell me if a row is modified?

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Colorize Datagridview In Event Cellformating

May 22, 2010

I am trying to colorize my datagridview in event cellformating (as written on msdn [URL])but it works so slowly. I have seeing before more difficult possibility to set color for cells thrue Class, but currently I forgot where it was and can't find. Or may be my datagridview is slow self. Is it exist a possibiity to make this element faster on VB.net?

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Datagridview Cell Textchanged Event?

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?

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Datagridview Checkbox Click Event?

Mar 9, 2011

my Question is that if i ./ tick the Checkbox in datagridview the datagridview Column (4) value show in textbox if user click multiple tick in datagridview , the datagridview column(4) value add in textbox

For a = 0 To DataGridView1.Rows.Count - 1
If DataGridView1.Rows(a).Cells("checkbox").Value = True Then
TextBox8.Text += DataGridView1.Rows(a).Cells(4).Value
End If
Next

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