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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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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Apr 19, 2012
I have a DataGridView that I am adding rows to programmatically.Normally, when I add the first row of data the SelectionChanged event firesBut my Grid is anchored to the top and bottom of the form and when I make the form smaller such that the height of the Grid is zero, the SelectionChanged event does not fire when adding the first rowIs this by design? It doesn't seem logical to me.
With DataGridView1
.Rows.Clear()
.Columns.Clear()
[code].....
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Jul 28, 2011
In the following sample, I create a collection of objects and bind them to a DataGridView. When the button is clicked, I .SuspendBinding, then remove all the records, then .ResumeBinding. The DataGridView1_SelectionChanged event is fired when I remove { m_dataSource.RemoveAt(pos) } the selected row of the Grid. Why is this? I would think that .SuspendBinding() would stop any events from firing through to the grid. If not, what is the point of .SuspendBinding()?
Imports System.ComponentModel
Public Class Form1
Private m_dataSource As New BindingList(Of BusinessObjects.Person)
[code]....
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Jun 13, 2011
I have a control that invoke as : Using frmAssemblies As New MaintainMenuItems.bundleDGV(Me, MaintainMenuItems.bundleDGV.formState.pricingEdits, APSite.xrefID)
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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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Jun 26, 2009
Is there a way to prevent the SelectionChanged event from firing when adding rows to a DGV programatically? I am adding rows in a loop & the SelectionChanged event fires twice, which is causing me problems. I only want it to fire when the user clicks on a row.
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Aug 23, 2010
why the SelectionChanged event fires when adding the first row to a DataGridView? Subsequent adds do not fire this event ... only the RowsAdded event fires after the first row is added.
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Apr 11, 2012
i have a DGV and 2 TextBox (the first one is for user input and the second is for displaying "Contact Person") in my Form. DGV DataSource is from database, i bind it programmatic with DataTable, the data is binding well, perfect, but when i use event Selectionchanged for DGV to display "Contact Person" in TextBox2 BASED USER SELECTION in DGV, it become error : "The Connection is already open" here is my code to bind data to DGV :
[Code]....
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Feb 15, 2012
How can I cause the Paint event to fire from a Form_Click() event? This is what I'm trying to do...
Public Class StrTests01
Private Sub StrTests01_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Click
Dim ps As Graphics = Me.CreateGraphics()
[code]....
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Dec 1, 2009
I need an event that fires every second, just like the timer1_timer() event of VB6. I'm using VB9/Silverlight, creating a small sidebar gadget.
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Jan 29, 2009
Key Down event won't fire
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Nov 17, 2009
I created a control that inherits from treeview. When I add it to my project the afterselect event does not fire.
<code>
Public Class TreeViewClaims
Inherits System.Windows.Forms.TreeView
End Class
</code>
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May 16, 2010
When i clicked one of the node of treeview, it does not fire SelectedNodeChanged event.
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Aug 29, 2009
How do I fire an event from a background thread I created onto the main thread in a class in vb.net?
I've searched A LOT fot this, but could only find non vb.net examples, mainly C#, and have not been able to translate these.
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Feb 16, 2010
I have a windows service in VB.NET 2008 and want to fire an event every hour on the hour within the service?
I have this working in an application were i assign the current hour to a variable and check each minute if the variable has changed. Is there a cleaner way of achieving this in a service?
I also want the service to read this in form an XML file i have modified from a service control app can i use app.config for this as i've read your not supposed to write to this file?
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Nov 29, 2009
I have this function that totals a series of textboxes everything works fine except the last line, i need to call the function a second time for the correct total of last line,anyone have any ideas what i am doing wrong? I even tried to make the last line its own function and call it seperately but have the same behavior.
[Code]...
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Mar 25, 2010
I am trying to drag and drop items from a listbox into a richtextbox? I can not get the .DragDrop event to fire? I have copied and past the code from [URL]
I can get the .DragEnter event to fire. The mousedown event fires the drag and drop, is there something for mouseup?
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Nov 2, 2010
I have added the AutoPostBack = "true" attribute to the drop down list. It doesn't work.
<asp:DropDownList CssClass="dropDownList" ID="ddlBusinessUnit"
AutoPostBack="true" runat="server" Width="250px"
OnSelectedIndexChanged="ddlBusinessUnit_SelectedIndexChanged">
[Code].....
How can I ensure that the event method is called?
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Apr 27, 2010
I have the following form1, when called as the startup, everything works fine. Usually after I added a new row, fill in the fields in that row and close the form without leaving that row, both bindingsource listChanged event will fire.
However, when called from the another form. It does not work. bindingsource listChanged event does not fire when I close the form after adding a new record. Likewise dataGridView1_RowValidated event as well.
Imports System.Data
Imports System.Data.SqlClient
Imports System.Data.Common
[CODE]...
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Oct 21, 2009
I can't seem to get the Form.GotFocus event to fire.I have two forms - a main window and a debug window.The debug window will always be shown with the main window. But, I don't want the debug window to appear in the task bar - it's unnecessary.While my program is running, when I select another program, my main window and the debug window are placed behind the program that I selected. From the task bar, I can bring my program back to the front by clicking on it in the task bar. The problem is, that now my debug window is behind the other program.I have code that will "DebugWindow.BringToFront", and it works. But I need some way to run do this when the main form gets the focus.I do not wish to make any of my forms Modal. At least not permanently. If the solution is to change the modal property of the form temporarily, then that wouldn't be a problem.
I tried Me.Enter, Me.Activated, Me.Click and a few other events. Me.Click only works when I click within the Form window, not the form's title bar. Me.Activated caused problems - The code ran, but it would always end with the focus on the Debug window. When I tried to click on the main form, the Activated event would fire again, sending the focus back to the debug window.[code]
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Jan 19, 2009
I have a MDIcontainer form witch handles MDIchildren. The problem I'm having is when i open a new Mdi child and close the Main form , The app is supposed to ask if i want to save the current MdiChild. Heres my code
[Code]...
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Jul 13, 2009
To execute some parts of code based on the voice(sound)
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Nov 29, 2009
I have this function that totals a series of textboxes everything works fine except the last line, i need to call the function a second time for the correct total of last line,anyone have any ideas what i am doing wrong? I even tried to make the last line its own function and call it separately but have the same behavior. [Code]
View 2 Replies
Sep 5, 2010
I have a Textbox on my application that recieves data from another application via a sendmessage call from the other app.
I can see the data being entered in the textbox but the TextChanged event never fires when the text changes. I need to process the data that is sent but since the event does not fire I'm kinda stuck..
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May 18, 2012
I am trying to implement an update panel on my web page. when I add this, everything works fine:
<script runat="server">
Protected Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Me.Label2.Text = Date.Now.ToString
[code]....
This will cause the event to not occur. If i change the "<" from the string, all is well. why cant I have "<" in my strings? This is important because i wont allow me to put an xml string in the text box.
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Mar 1, 2012
I am using a column with check box to be able to select my data row from a GridView. But The OnCheckChanged event won't fire. I have tried reading articles to make it work and copy code exactly and it just won't fire. I am using vb.net and asp.net
<asp:GridView ID="locationDetailGrid" runat="server">
<Columns>
<asp:TemplateField>
[code]....
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Apr 30, 2012
in my application, I pull in http code from the server side. When this code is placed into the application - the event will happen when clicked in IE, but not in any other browser. Heres the part of the code that deals with the image that is clicked and the event.
<img canExpand="true" style="cursor:hand" id="img34635" src="../images/plus.gif" EntityID="346" EntityCat="35" onclick="LoadChild(this.EntityID, this.EntityCat, 0, this.lnEquip)">
LoadChild is a javascript function on the client side of the page. When the image is clicked in anything other than IE , nothing happens. Can anyone see why this is happening? It may be a formatting issue.
edit - here is the javascript function load child
function LoadChild(lnEntityID, lnEntityCat, FullExpand, EquipID) {
document.getElementById('dropTypes').disabled = false;
document.getElementById('dropTypes').style.background = "white";
[code]....
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Jul 31, 2011
My web user control is [code]...
The problem now is that the click event does not fire upon clicking at the button.
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Nov 5, 2011
I want to create a service that sets up a user specific environment. So I would like to know when a user has logged on to the computer.
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