When the user clicks a cell in a new row (the row headed by the *) I am populating a column with an integer that is incremented in the "DefaultValuesNeeded" event. However, when the user clicks off the row (having done nothing to the row), what event gets fired? I need to decrement my counter but can't locate an appropriate place to do it.
View 4 RepliesI know that there is usually a DoDragDrop method that starts a drag and drop operation. And that there are events (such as DragEnter, DragOver, DragDrop, DragLeave) that can be handled on the target side.
Are there any events on the source of the dragdrop that will tell me whether the dragdrop operation was completed, or possibly cancelled?
I have a project which has a couple of tabs on form, an usercontrol is on the 2nd tab, when the form loads, i want the load event method of the usercontrol to fire, and the message box should pop up.Please see the attach file, the message box only pop up after the form is loaded and the 2nd tab is clicked, not when just the parent form is loaded.
View 5 RepliesIs there a way to find out if the "TextChanged" event is fired because the user is typing into a textbox or the programmer called myTextBox.Text = "something"? I don't want to react when the user is typing each letter into the textbox so I am using the "Validated" event to catch when the user is done so I can react. The problem is I don't have a way to catch when the programmer does "myTextbox.Text = "something". The only way I know to catch changes there is to use TextChanged but then I don't want to be reacting when the user is typing each letter into the textbox.
View 4 RepliesI migrate a project from vb6 to vb.net.In vb.net project form's events are fired randamly. I mean form_Activated event are fired first after that form_Load event are fire. and this events are fired more than one time.what condition form_Activated event fired before form_Load event.
View 2 RepliesI am using Excel 2003 (under XP) to print to several printers, with several different kinds and sizes of stock. My workbooks consist of two sheets: "Data" and "Print." "Data" should never be printed. "Print" is laid out with the proper spacing for a particular stock, and should not be sent to the wrong printer.
I want to use a BeforePrint event to check that the active printer is correct and that "Print" is the active sheet. If either of these tests fail, I want to cancel the print event and replace it with a new one.
Here is the problem I am experiencing: Upon opening Excel, all printers function normally. The first time a BeforePrint event is cancelled, Excel gloms onto the active printer and subsequently tries to use its driver for all other printers. In the Print dialog, every printer selected will show the model of the cancelled printer next to "Type" and its location next to "Where," and the Properties button will bring up the preference menu for the cancelled printer. It is still possible to print to the other printers,
but the settings for the cancelled printer will be used, even if they are incompatible. This persists until Excel is closed and reopened.
BeforePrint events that do not cancel do not result in this problem. Events that do nothing BUT cancel, on the other hand, do.
problem with no event fired after the wrapped ocx object with aximp sent out the message in a console application testing.
View 3 RepliesI have VC++ windows service running on a windows 2008 server which invokes a VB.NET exe with certain comandline parameters using CreateProcess(). VB.NET application has a form wich uses WithEvents to handle certain event. These event handlers are set in the Forms Load event. Problem here is when i debug the VB.NET application individually the application works fine, Forms Load event is getting fired. But when the exe is invoked via the windows service the form Load event does not get fired. Note the Forms Show function called and not showdialogue.
Why this was done i am not sure it was a VB 6.0 code which i have converted to VB.NET. But everything works fine when i debug the application individually on windows 2008 64 bit.
I have a datagridview that completely updates anytime changes are made to it. It is not connected to a source but rather the datagrid is filled when first launched.
View 1 Replies[VS 2010 Beta with .Net Framework 3.5]I've written a C# component to asynchronously monitor a socket and raise events when data is received. I set the VB form to show message boxes when the event is raised. What I've noticed is that when the component raises the event synchronously, the message box blocks the component code and locks the form until the user closes the message. When it's raised asynchronously, it neither blocks the code, nor locks the form.
What I want is a way to raise an event in such a way that it does not block the code, but is called on the same thread as the form (so that it locks the form until the user selects an option.)
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I have the following code in the code behind of an ASP.Net Page
Protected Sub ReprintDlgbutton_Click(ByVal sender As Object, ByVal e As EventArgs) Handles ReprintDlgbutton.Click
Dim queue As PrintQueue
[Code].....
I am developing application which will read credit card no without generating keystrokes for same in POS for .net. I can enable device but when I swipe a card MSR_Dataevent is not firing. EDIT: I have done below code:
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I'm using Systray for MDIform. The problem that I'm facing is MDIForm_MouseMove event sometimes doesn't get fired and therefore application gets stuck. After several click then all of a sudden it works for few clicks and then again get stuck.
View 1 RepliesI'm creating a dynamic gridview in vb.net using a connected sql database. Everything works fine except 1 thing: when i click the update command, the event just won't fire no matter what I do. the gridview goes into edit mode and the cancel button works fine. This has cost me over 2 days of googling but none of the solutions work. I used breakpoints to check if the code was executed, but it wasn't. If anybody has any experience in this:I believe the problem lies in the addhandler but it doesn't give any errors.I forgot to mention that the sql command was a test and sets the data in that field to 15, now it's 10, it works when i use a normal button or a static gridview.
Public Class WebForm1
Inherits System.Web.UI.Page
Dim rowscount As Integer = 2
[code]....
I found this code on another thread that fires an event when new email is received. Is there an event that I can add when an email is sent? How can i find how to call this one? Tried searching and can't find it.
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I am back with a problem again I have a grid and I am trying to implement sort for it.Basically I have binded the data manually to the grid now my problem is I do not know the code to be written for the sorting event:( some how managed to get the code for the page indexing :-/,...doesnot have much idea!! could you !!"experts" help me out by giving me some hint or sample code in VB.Net:icon_exclaim: unable go ahead further:
View 1 Repliescreated a control inheriting a textbox. it is used to format a datetime data. i created a custom property DateTimeFormatMask which is "MM/dd/yyyy" by default. problem i'm having is that when datatable is filled by adapter and the textbox is populated with the data, it is not formatted..i placed the codes that formats the data in the Validating Event which doesn't seem to be triggered at this point.below is my code on my
View 4 RepliesI'm having an issue where my main form isn't updating even though I see the event fire off. Let me explain the situation and share some of my code which I'm sure will be horrible since I'm an amateur. I created a class to take in the settings for running a process in the background. I add some custom events in that class so I could use that in my form instead of a timer.
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i want to execute a command if the KeyDown-event occurs. This command should only be fired if the Enter-Key was pressed.
View 2 RepliesBack in the VB6 days, I could count on frmWhatever_Resize() to be fired when a form is loaded. That doesn't still seem to be the case. Since my resize event is filled with all the code I want that adjusts the size and placement of things, I decided to just call it from the end of the form's load event. That has no affect. I'm guessing that the form isn't actually shown until form_load is finished?
is there some other event that is fired when a form is shown, so I can call my resize code there?
I am writing a program to access the remote file data using FTP on button click event. Set breakpoint in the fist line of button click event. That program is using windows application vb.net 2008. If I run the application, when I click the button, it does not fire a click event of the button.
Here's my code:
Dim reqFTP As FtpWebRequest
Dim filepath As String
Dim filename As String
Dim filename1 As String
Dim ftpserverip As String
[Code] .....
During run time when I click the button the control not entered to an click event.
I have menu item, in which I have specified ShortCutKeys as "Del". On click of menu item I have called specific method. I have one form on which one textbox is placed. When I hit the "Del" key the same method which gets called on menu item click is fired. I want the default behaviour to be followed by the textbox. how to suppress the event to be fired and to achive the default behaviour of the textbox or other controls present on the form.
View 2 RepliesI have been struggling with getting FormViews to work the way Microsoft expects me to for about a day and have figure a bunch of great stuff out.
I can catch e.Exception and e.ReturnValue in the ObjectDataSource.Inserting Event Handler and I can even cheat and check other properties of the Object in the ObjectDataSource.ObjectDisposing by checking the e.ObjectInstance ... and I even learned that FormView's Inserting Handler Runs AFTER the ObjectDisposing Handler so If there is a problem found I still have time to react to it and st the e.KeepInInsertMode to true on the FormView.
My problem is, it seems that the values entered by the user into the Insert form are cleared regardless.
So, How do I Prevent a FormView from clearing after it's Insert Method has fired?
(Using ASP.NET + VB)
I don't think posting my code here will really do much good and i would have to modify it to trim out confidential business logic stuff... so I'll skip it for now.
edit:
I have found a temporary and admittedly terribly cludgy solution (in case no one ever finds a REAL solution to the problem).
I have a page variable defined as:
Dim eInsertArgs As FormViewInsertedEventArgs
And then I do the following in my ItemInserted handler
If boolInsertErrorOccurred = False Then
e.KeepInInsertMode = True
eInsertArgs = e
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The effect of this is that I am setting the values BACK to the submitted values AFTER ASP.NET binds the FormView to the default (blank) Template.
I have a class that is stored after serialization and compression.Is there any event built in the class that is fired automatically when a class is deserialized and ready to be used??
View 1 RepliesWhen I utilize AddHandler in VB to add my own method to the Click event :
AddHandler Button.Click, AddressOf myButton_Click
I see that my code executes last - after other event handlers for the Button_Click event. Is there a way to insert my event handler in front of other events so that it executes first?
I'm having a bit of an issue killing threads off and resetting my form. After starting the threads, everything runs fine. When I want to cancel the threads, the threads are all killed off "properly" using the Abortable Thread Pool, but how do I know that all the threads are dead? I've tried using both GetAvailableThreads and GetMinThreads compared against the thread count that should be running if they're all killed off, but I can't seem to get it to work. The only time I can get the GetAvailableThreads to return the "correct" number is if I freeze one thread and kill off the rest.
View 7 Repliescurrently, i have this code: My_BgWorkerB is the Name of my BackGround Worker
If My_BgWorkerB.IsBusy Then
If My_BgWorkerB.WorkerSupportsCancellation Then
My_BgWorkerB.CancelAsync()
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I changed target framework from 3.5 to 4.0, no other changes. A simple ping which worked with 3.5, now with 4.0 the result gives Canceled=True. what may cause this?
Public Sub StartInternetConnectionCheckEvery(ByVal seconds As Integer)
Dim timer As New Timer()
timer.Interval = seconds * 1000
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Eg. ""vb.net" timer event trigger on purpose". This application is meant to run at all times to download a web page every minute. To avoid freezing the UI, I read that the best solution is to move the code from a While/Sleep loop to a Timer that will be triggered every minute. The problem I have, is that the user must wait for a minute before the event is triggered:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Timer1.Interval = 60000
Timer1.Enabled = True
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Is it possible to force this event to occur instead of waiting for it?
Well my datagrid so far has the edit,update,cancel feature and it can get info back from database after entering a number into a textbox.
All i need now is to get it to where I enter a number the data comes up which works and I want a blank row to show up which i can edit and add stuff to.