I have a DataGridView and sometimes I use the CellValueChanged Event but othertime I don't want it to trigger. Is there a way that I can remove an event sub and then restore it. I have 5 columns with a ComboBox. After licking one, and then another, the line bellow keeps repeating until stack crashes
[Code]...
[url]..I'm trying to use the Restore.Abort function during an SMO restore process - What would be the best method?
[code]...
I'm creating a system in VB.net that utilizes Lua via the LuaInterface.
To associate an event in Lua with a function, I can simply do this:
RegisterEvent("tick", function(nt)
if not lcc then return end
if nt>=tt then
[Code]....
how I should change my RegisterEvent Function/Sub and how I should make the DisconnectEvent.
I know this is kind of annoying to try and understand what I'm trying to say. Feel free to post a comment asking for clarification. I'll be more than willing to try and explain it to the best of my abilities. If the LuaInterface has some kind of native way of handling this, I'm open to that as well :)
Problem: I have a document class which contains a list of objects. These objects raise events such as SolutionExpired, DisplayExpired etc. The document needs to respond to this.
Documents can sometimes exchange objects, but a single object should never be 'part' of more than one document.
My document class contains a bunch of methods which serve as event handlers. Whenever an object enters the document, I use AddHandler to set up the events, and whenever an object is removed from the document I use RemoveHandler to undo the damage. However, there are cases where it's difficult to make sure all the steps are properly taken and I might thus end up with rogue event handlers.
Can't Remove Row in datagrid on event RowValidating
View 6 RepliesSome controls are dynamically created within a panel. Their event handlers are attached
Dim btn as new system.windows.forms.button
with btn
'set properties
[Code]....
I have a TableGridLayout (6 x 6) which host 36 buttons created at design time.From the 36 buttons, only a handfull maybe needed at anyone time depending on data retrieved from an SQL database.Everytime I need to 'clear' the grid to populate with new items, I clear the text of each button, make it visable if required and then upadate with the new text.On every pass if a button becomes active, I add an event handler to the button like this.[code]...
View 4 RepliesIn C# you can define explicit add/remove code when an event is subscribed/unsubscribed.
Is this possible in VB.net?
I'm writing a small 2D engine that uses Lua to control it. I've been setting events up in between the Lua and the VB.net for the past little while here. The problem, I've realized, is that is that I can't seem to remove the events which is screwing up quite a few things (because they are being called when they should be done with). To fix this, I wanted to add some kind of way to remove the specific event handler.
I know how to add an event handler:AddHandler Button1.Click, AddressOf Button1Clicked
But with this in mind, is their a way to remove a specific event handler in the VB.net? I didn't explain this very well: If I have this:
[Code]...
I have a Timers.Timer called COMTimeout, to which I add an event handler using:
AddHandler COMTimeout.Elapsed, AddressOf TimeoutEvent
however, the handler may also be:
AddHandler COMTimeout.Elapsed, AddressOf SecondTimeoutEvent
I now need to remove the handler, is there a way to do it without knowing the name or do I need to keep track of which handler as been assigned?
VB.NET RemoveHandler & Anonymous Methods
If I add an event handler like this:
AddHandler s.Click, AddressOf Panel1_Click
How can I can then remove the event handler?
Private Sub Panel1_click(ByVal sender As Object, ByVal e As System.EventArgs)
' Remove code
End Sub
I want to add and remove Datagridview in VB.NET with button click event. Can it be possible.
View 2 Replies[code]The RichTextBox's text would act as if the user pressed backspace while typing in the TextBox.How is it possible to remove a character from the textbox when the backspace event happens?
View 2 RepliesI have an event called "worksheet_selectionchanged" which occurs when a range/cell is selected in an excle file.When the event is triggered, all the tabpages in a tabcontrol should be removed.The code is given below:
Private Sub myWorksheet_SelectionChange(ByVal Target As Excel.Range) Handles myWorksheet.SelectionChange
for each tabpagesToRemove as TabPage in tabcontrol1.tabpages
tabcontrol1.tabpages.remove(tabpagesToRemove)
[code]....
but when ever i select a cell in the excel file, the tabpages seems to be "not removed".
I do have a customized treeview which inherits from treeview. The customized treeview offers - amongst other - the functionality to automatically check/uncheck the child and parent nodes according to the selected node.To do so, I use (or mabye abuse?) the AfterCheck-event of the treeview in the class where the inherited treeview is customized. Code looks like that (Submethods not included):
[code]...
I temporarily remove the AfterCheck-Event in the event-procedure to avoid it getting fired when I programmatically check/uncheck the checkboxes of the treeview. Works fine so far, only problem I see: if another programmer wants to use the customized tree view and tries to make use of the After-Check-Event, he'll get caught in an infinit loop, because his own After-Check-Event (he added himself to the treeview) was not removed and keeps on firing every time a checkbox is automatically checked/unchecked.
How can I remove ALL methods linked to AfterCheck-Event without knowing which method someone added to the treeview-control? My guess is to use reflection and to get the underlying delegate of the AfterCheck-Event by using the .GetInvocationList somehow - but I was not able to make it work.
Feraud
How do I remove beep sound that comes with "KeyDown" event. When I press enter after I input a employee Id in the text box, there is beep sound. Private Sub TxtEmpName_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TxtEmpName.KeyDown
[Code]...
I am having a problem with the cellvalidating event constantly firing when the datagrid is refreshed (since the trigger that fires the event is the originally selected cell losing focus).I would like to remove the event handler for this at certain points of my code so that it does not fire but the examples I have come across on MSDN don't appear to do anything, so I guess I must be doing something wrong.[code]
View 1 Repliesremove an event handler from within the event handler?
I have a class that gets data from a hand scanner. When the scan is complete and the data is validated, the class fires a custom "ScanComplete" event and returns the data in a custom EventArgs.
In the calling program, I'm creating an instance of the scanning class and adding a handler for the "ScanComplete" event. In the event handler I get the data that was scanned and then remove the handler.
It seems to be working but it feels wrong to remove the handler while I'm running inside the handler. Will this cause a problem?
in visual basic 2010 project with access 2007 database how can i use program to take a backup of database and restore a database
View 3 RepliesAnyone who give me a code for how to restore database using openfiledialog??
View 6 RepliesI was trying to improve my graphics. I have imported a picture on my resources. Then I don't know why all went wrong and it doesn;t regognise the resources.When i debug, like always it runs when all are fine and ok with not errors. Can I restore that debug?
View 1 RepliesI have used MS Backup to do a file backup of my entire computer. This completed without error. I needed to restore one page in an ASP.NET application to the version in the backup.
I used the Restore Files option and saw my Page.aspx file and it's Page.aspx.designer file. I chose the two and restored them.
When I looked at my application, however, Page.aspx.vb and Page.aspx.designer.vb had been restored (ie. the page behind's but not the pages themselves)
Just had to remove remove statics and use Delegates refering to class. i have got a little problem in one of my project.I need help to resolve it.My application Connect several FTP server with the same Class.I'm using TCPclient for few specifics Commands.The problem : All threads call the same TCPclient wich can't connect several server at once.I would like to create a New TCPclient for each thread.
[Code]...
I'm trying to remove individual nodes from their parent, I tried the Remove method but it doesn't seem to be working. How is this done? Is this a bug or what?
Sub Main()
Dim xml =
<?xml version="1.0" encoding="utf-8"?>
[Code].....
i want to restore VB setting to 1st-time-use setting. i spend a long long time looking for default button in VB.But i cannot find anything .
View 1 RepliesI'd like to know how to restore my database in visual basic. the code i used for backing up is[code]...
View 2 RepliesI want to backup and restore the database by using vb.net.I have a problem here..This dialogue box appear.
"
[Microsoft][ODBC SQL Server Driver][SQL Server]Cannot open backup device 'C:Documents and SettingsSMy Documentssales.Bak'. Operating system error 5(Access is denied.).
[Microsoft][ODBC SQL Server Driver][SQL Server]BACKUP DATABASE is terminating abnormally.
"
I am writing a database application with Access 2007 and VB.net 2008.Is there a way in VB.net to backup and restore the database?
View 3 RepliesSo I made a program that is like a taskbar. (taskbar = Menustrip)
on runtime it gets all the apps and add there name and icon to the taskbar and when u click it I want to force it to restore itself so its no longer minimized.
For the click its probally something with CType, and I don't know much about the CType :(
[Code]....
I'm attempting to recreate the windows maximize/restore button, where when clicked it will either send the window to its previous state or put the window in full screen BUT fitted with the taskbar visible.
View 7 Replies
