I am trying to migrate a vb6.0 application to vb.net. I have a major issue while executing the code under form.activated and form.deactivate. There is a difference in behaviour between form.activate in vb6.0 and form.activated in vb.net. How can I simulate the behaviour of vb version in vb.net.
I have read that the form.activated fires even when the control goes to a different application and comes back.
I had issues in refreshing a form that is bound to different tables in a database. Various forms allow the user to change and add and update information on the form via the database. I had created a public sub in that form that the other forms could call, after saving the data, that was supposed to refresh the data on the main form. This was not working so I researched the problem. I came across this page which pertains to Form.Activated: [url]
I placed all of the table adapter fills into this event, instead of in Form_Load, and it seems to work now, when the form first loads, and when other forms update data. My question is does anyone have experience using this and what are the consequences, if any, in using this to reload/refresh the data showing on the form?
I am working on supplier maintenance file. From mainmenu, opening first form shows records on datagridview through databinding. Clicking add new record, i fired a second form as my data entry with detail view through databinding, minus navigational buttons. I left the delete and save button only. Once through data entry, i save it on server. My problem is, how can i reflect the added record on the first form while i am on my second form? I prefer the new record be added only to the first form. I don't want the idea of retrieving the records again from my server.
View 3 RepliesThis is a non-MDI windows application. I have a home form containing a panel named Panel1 and two buttons btnForm1 and btnForm2. Clicking btnForm1 and btnForm2 opens up Form1 and Form2 respectively in Panel1. Before a form is opened in Panel1, all opened forms in Panel1 are cleared. The code follows:[code...]
In which events should the above lines be written? In MDI apps this could have been accomplished by including them in Form_Activated and Form_Deactivate events respectively.
But here neither Activated nor Deactivate events fire when you open forms in frmHome.Panel1. Instead of Activated and Deactivate you can use Form_Load an Form_FormClosed events but they will only merge/unmerge menus if existing forms are closed before opening a new form in the panel.
But as I sometimes need forms to be opened and closed keeping existing forms opened, using these events won't fulfill the task. Even the GotFocus and LostFocus events won't work. So I want Activated and Deactivate events to be fired or some other means by which the menus and toolstrips can be merged/unmerged when the form gains/looses focus respectively.
We are converting a Visual Basic 6.0 application to vb.net 2008 and are having an issue, while executing the code under form activated event. There is a difference in behavior between form.activate in Visual Basic 6.0 and form.activated in vb.net. In Visual Basic 6.0, the Activate event was raised only when switching between forms in the application; in Visual Basic .NET, the Activated event also is raised in case of showing messagebox and when switching from other applications.(by msdn)
In vb6 application the purpose to use form activate event is, to execute some code when forms become active. In our application forms are loaded, hide and show in different flows. So whenever this form is shown from hide state or any of its child form return focus to it, we need to reflect different changes in the application to the specific form controls.
* For example user changes its application preferred language. * As the application is huge, so shifting logic to other place with respect to the current scenario might solve the problem for the current form but then I have to re think it for all other forms (which is very hectic and more or less not feasible). In the migration process it is required to make as little changes in the existing code execution hierarchy. So we need a similar behavior like form.activate in vb6.0 with some other event or restrict some functionality of Activated event in vb.net.
I'm trying to make it where you can click make a dialogbox lose focus until you input the requested information. I'm trying to create an effect where if you try clicking on the parent form, it flashes and won't let you activate it. You can see this effect in Windows sometimes when an error box pops up and you have to click 'OK' to continue. How would I go about doing this in VB.NET?
View 3 RepliesI'm trying to make it where you can click make a dialogbox lose focus until you input the requested information. I'm trying to create an effect where if you try clicking on the parent form, it flashes and won't let you activate it. You can see this effect in Windows sometimes when an error box pops up and you have to click 'OK' to continue. How would I go about doing this in VB.NET?
View 2 RepliesI have to two forms. Form one has several check boxes and when a button is pressed, a second form is opened and certain functions are ran based on which check boxes are selected.The problem is that the second form doesn't show until all of the functions are done.I decided to use the Form's Activated event, which works fine. However, the event fires every time the form comes into focus.Is there anyway to override the event and make it only fire once?
View 1 RepliesI am currently converting a 90s VB6 application to VB.NET. While testing I came across something curious.A Modal form by definition will prevent users accessing any other form in the application.This I discovered is not always true as I have a Modal form displayed which allowed me to access its owner form's Menu.Searching MSDN I could find no mention of this feature. So I thought I would share it:Click Button 1 on Form2 and Form1 comes back to life!
View 12 RepliesHello, everyone! I'm having problems with the Activated Event in Visual Basic. When trying to click my btnNext, IF THE DATA ON THE PAGE IS NOT SAVED YET, then a message box is to appear and alert the user that the data is not saved yet. When clicking the OK button on the MessageBox, it is supposed to return control back over to the main form. HOWEVER, I can't get past the Activated Event on the main form. It crashes the program. I've tried global flags, but it still does not want to work! Can anyone please help? Any thought in the right direction will be greatly appreciated! Thanks in advance, y'all!
View 2 RepliesI recently upgraded an application from VB 6.0 to VB.NET. This application contains a timer in its form (only one form is there). But after upgrading, the timer is not getting activated. Form is using DefInstance as follows: frmMain.DefInstance.Show()
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I need to create a program that when it is opened, Focus will be always in that program until someone with any way will close it. I've tried to add Me.GetFocus() in the LostFocus event but nothing happens, I've tried to add Me.activate() when the Deactivate() event raises and when I debugged the program worked but when I run the biulded .exe file nothing happens again! how I can manage this Function?
View 6 RepliesI have a combobox and a rich text box. When I select different items in the combo box, I want some text to appear in the rtb next to it. Such as, selecting "Dog" in the combobox puts "Golden retriever, lab" and etc in the rtb.
1) I don't know what kind of event handler would trigger the combobox. I tried a click event but it's crashing so I want to know if there's a different way
2) How do I find what the user selected in the combobox, so it can display stuff in the rtb accordingly? I thought it was .Items.IndexOf but nothing seems to be working so.
I am trying to switch from a SingleCall Remoting infrastructue to a client activated object infrastructure. But can't get it to work. Probbaly a setting. On the hosting server (a console application) I have:
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When we use Client-Activated Objects in remoting ? can any one provide an example on Client-Activated Objects
View 3 RepliesI'm having problem to get the Form.Activated (and .Deactivated for that matter) events to trigger for a Form with Form.TopLevel=False.
The reason why the form is TopLevel=False is because I need to put it in a tabcontrol.
Is there any other ways to detect when the Form is entered/activated?
I'm trying to make a easy hot key cheat system for a game. I have a timer that checks to see if the game is activated if not then it says game not running in a label box. If so then it says it's running. It detects it running so that's good. I want it to check to see if the numberic key was pressed like 1 and it will type in the cheat code. here's the source.
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Me.Focus()
[Code]......
How do I do code a notice to Facebook. If it came a new message is activated. A particular event. I can use webbrowser?
View 2 RepliesI have 2 FormsOne is my mainform, one is a "child" form.The childform has no control box.he mainform has a toggle button to show and hide the childform.
Private Sub ButtonShowHideChildForm_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonShowHideChildForm.Click
If ChildForm.TopMost Then
[code]....
I'm drawing my own charts based on values from a db. I'm drawing "directly" on the forms, so to speak. The thing is everytime the application is deactivated or if someting comes in front of the charts, the drawing dissappears. For instance, I have a contextmenu in one chart and whenever I use it there is a "hole" in the chart afterwards where the menu has been. Now I can see the reason for it, but how do I get around it?
View 2 RepliesI want to update a database based on the form that is currently activated. I had originally decided to use the GotFocus event. However I now understand that will not work as the form has controls on it. So I then thought I wouls use the activated event. This works but seems to fire multiple times. I put in the following code:
Private Sub frmNewTicket_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Activated
MsgBox("Form Activated")
End Sub
I select the form and make it activated and the message box appears about 15 times.Why does it do this? How should I handle this. I only want my code to execute once when the form is activated.NOTE: There are several forms that the users will be changing between, incuding forms from other applications.
I am facing a rather odd problem right now. If you fellow this : Best place to put key or password used for encryption? i was looking at a way to encrypt data. Using RSA seemed to be a good choice. However we have a problem since my requirements are thoses fellowing...Client must have a file encrypted in order to determine if the software is activated.
That actually mean that the client must read the encrypted file.. but the problem is that we actually need the private key to be there which isnt a good idea since some poeple could start making their license file using that key. The activation server encrypt the data file which are sent back to the client and then the client save that file.
Client must have a file encrypted in order to determine if the software is activated.Client sent user data to the activation server in unencrypted/encrypted form. That doesnt matter. Sure it would be better encrypted at this point.The activation server check that data and then determine if the client can be activated.If the client can be activated then the server send the encrypted form of the license file.. but the problem appear now.. there is no way to deencrypt the file on the client if the private key isnt on the client which would be pretty insecure!
I am working on a school project to display a photo of a professor when their name is selected using a RadioButton and to display their name, office office hours and so on.
I have their Photos in a directory on my computer
Theonly thing I cannot figure out is how to use 1 picturebox and link the image to display to the radiobutton.
I have tried all kinds of queries on the internet and cannot locate the answer. There might be something with an Image.FromFile command I saw but that might have been from a previous version of VB and I could not get it to work in VB9.
basically i'm making a webbrowser, and i want it to select and option from a dropdown ComboBox, on a certain button click. I use this code which i found it on these forums as well:
For Each element As HtmlElement In WebBrowser1.Document.GetElementsByTagName("select")
If element.GetAttribute("id") = "wrapper_opacity"
element.SetAttribute("value", "51")[code].....
The problem with this code is that it just inputs the selected value, but it doesn't really SELECT it.The option selected is shown, but not activated.
I have a MDi project , I want to raise the activated(Sender, eventArgs) event of activeMdi Form
View 5 RepliesI am trying to get a checkbox to activate and deactivate a button. While the button is deactivated it is dimmed or faded out. While Actvated the Text and button is fully visable. I did use ctype to activate the button from the checkbox.
CODE:
I found this code in the help section online to enable & disable an inactive button but do not know how to apply this to the button.
Enable or disables the automatic generation of inactive button images.
Im Using VB 2008. I have MsgBox() statements in all Mouse & Form Click events to TEST & NOTHING FIRES during Form Load when I click on Form or Button Controls !!! The Form Load event contains code for Displaying the Label.Text control many times with changes in the Text to simmulate annimation.
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The following code does create a form within a form and does place NotePad inside the child form. You have to manually start NotePad prior to execution (I work on that later) but the code does workŠ My problem is now I want to manipulate the properties of notepad i.e. focus, size, location, etc. but I cannot figure out how to reference notepad and its properties.
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get a button on form A to open form B and then close (not hide) form A when clicked?Background: I am coding a VSTO application for Excel in VB2008.
Private Sub FormAButton_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles FormAButton.Click
Dim FormB As New FormB
[code]....
I have a form being called form several forms using ShowDialog().
1. Is there a way for called form to know which form called it by receiving a code or key from the calling form?
2. The calling form has a gridview. How can the called form pick up a column's value from the currently highlighted row in gridview in the calling form?