I want to add some action to my form when it is closed by clicking on the "X" button in the upper right corner of the form.How is this done? I suspect that i must add a handler for some event, but which event is it?
Currently i am using the closing event, but i dont get it to work properly.
I would like to know the event order of form which is executed while opening form. I am showing my form using following code and the code in form_load event executes twice. Once when the form variables are initialised and second when form is displayed. I want it to execute once only. form showing code:
[Code]...
I am developing a window application. I'm using Visual Studio 2005 and Mysql Database. The problem is, only one form is getting executed when I try to debug.I have changed the startup form to other forms(from a list of existing forms), but still that same old form is getting executed, even if I delete that form or exclude it from the project, it still keeps on executing.
Where this form is stored?(I deleted it from the folder where all other forms exist)
I have a project with 2 forms. I need the code to be executed on one form first, which is why it is run first, then I want to hide it and just display the user interface form. I have the following code, it makes both forms appear, but I only want the user display form to show: [code] I call both these subs in the frmLoad of the Processing form.
View 3 Repliesi got this window is in an mdi form and the form_load event is not fully executed, im on window 7 x64 VB 2008. Here is the code of the form load event
Private Sub frmGestion_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
bd.connexion("TacoBD.mdb") bd.ChargerDataset("tblModelAutoLuxe", "SELECT * FROM tblModelAutoLuxe") For ctr As Integer = 0 To bd.dsTaco.Tables(0).Rows.Count - 1 lstVehiculesLuxe.Items.Add(bd.dsTaco.Tables(0).Rows(ctr).Item(0)) Next bd.ChargerMarques("tblModelAuto") bd.Deconnexion() For ctr As Integer = 0 To bd.dsMarques.Tables(0).Rows.Count - 1
[Code]...
I have a problem concerning the Form_Loading event: When I want to load a new Form (ImageDisplay) the ImageDisplay_Load Event is not executed first.
Instead it runs through the global variables definitions and then executes a Private Sub called numericupdown1_changed.
The numericupdown1 field is part of the form I want to load and has not been touched.
That is my calling sequence:
Private Sub Dispalydata_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Dispalydata.Click
Dim myDisplay As New ImageDisplay
[Code]...
The strange thing is that for other forms in my code it works well and starts with the form_load function.
I have searched everywhere, and have not found an answer. I would like to know how to enable your form to detect if a process is started. Something like this:
If Process.Start("Process.exe") Then
MsgBox("Process is running")
Else
MsgBox("Process is not running")
End If
The documentation for an API I am using explicitly says that I need to call close() on an object when I am done with it. I would also like to log something there.I understand GC, might not happen at expected time, etc. etc. I still want to implement some code at cleanup.I read that I need to Override Finalize() to do this.I wrote a console app to test and it looks like it indeed works.However, this does not work with windows forms. I put a break point and it never gets hit in the Finalize method.How do you add some code to be executed at cleanup time for a window form?Here is my console app test:
Public Class Foo
Public Sub New()
Console.WriteLine("In Foo Constructor")[code]......
I have 2 textboxes one for datetime picker and another for entering the name. i waant to make the datetime textbox invisible when the form is executed & when i press save the data from both textboxes should be saved into the database.
View 3 RepliesIs it possible to get a string form a table and executed at runtime using reflection?(.Amount > 1000) and ((.Total * 80%) >.Amount)� Amount and Total are Decimal properties of an existing class
View 4 RepliesI used to write this:
Private Sub Example()
Static CachedPeople As List(Of MyApp.Person)
If CachedPeople Is Nothing Then
[code]....
But then wondered if I could reduce this to:
Private Sub Example()
Static CachedPeople As New List(Of MyApp.Person)
...rest of code...
End Sub
will the "New" bit only be executed once when the function is first executed but in the next call, it will already exist.
for example i have this code :
Sub Month()
Dim Conn As New Data.OracleClient.OracleConnection
Conn.Open()
Try
Dim Cmd As New Data.OracleClient.OracleCommand
With Cmd
[Code]...
What will happen to the datareader when the Connection is closed ( Conn.close)
Will the Cursor that is used by the datareader be freed ? or will it stay open ?
If the cursor that is used by the datareader is still open , when will it be automatically closed ? or should i just closed it manually ?
Will it cause the dreaded "ORA-01000: maximum open cursors exceeded" ?
I am making the interface controls on my forms to go from right to left using with RightToLeftLayout and RightToLeft which I have set the properties set to true. When I run the application and I open another form on the same application that I am using, I click the button to set the form to go from right to left. When I click the button where the code are running, it close one form as it leave the one other form running. There is no code like Me.Close() that required to close one form. I am using Me.RightToLeftLayout = True,
View 8 RepliesI am trying to delete a file after viewing it. I loosely copied the code from [URL]. The problem I am running into is the filename I am passing is still in use after I close this form. How to get id where the file is being held open. Here is the relevant portion of the code. This is how I am opening it
Private Sub TifViewer_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
PicImage.ImageLocation = PassedImage
PicImage.SizeMode = PictureBoxSizeMode.Zoom
cboFrameNo.Items.Clear()
'Sets the tiff file as an image object.
[Code] .....
I have multiple forms in my VB.NET application. How do I make it so that any form I close will terminate the application?
View 3 RepliesI need a way to detect when a child form has been closed. I've created an MdiWindowList thing (but in the form of a toolbar with buttons, similarly to the Windows taskbar), and everything works great, but the method I have for refreshing the taskbar's windows has to be called when a child form closes. I've trying calling the method from the child's Form_Closing event, but there's a slight lag so whenever there's more than 1 window open the first one gets skipped (then the others close properly, since the taskbar is being refreshed first before the form actually closes).
View 10 RepliesAnd this problem:+ I have 2 form. - Form 1 have 3 combobox with some item load from database Access.- Form 2 load data when change item at combobox form 1.
View 5 RepliesUsing VB Express 2010 in windows XP Pro 64.
A ListBox shows the project forms names.
On ListBox_DoubleClick
For Each F As Form In xFormCollection
[Code]....
Works fine the first time but after closing the form opened by the DC, if I try to open it again, throws an exception "Cannot access a disposed object".
Since I can still access any other form not previously showed I guess that the closing changes a status that allowed the form to be .Show, there is no F.Load , F.Activate after the exception doesn't seem to do anything. What should I do?
I need to know if a form2 is already open when a button1 on form1 is clicked. I found the following code which fails when I open form2 then close form2. When I click button1 on form1 nothing happens. Is there a way to reset form2 to nothing or is this just wrong?
Sub isFormOpen()
If xmlTest Is Nothing Then
xmlTest.Show()
OpenXML(filename)
End If
End Subdavidbell
When a sub runs, it is using up large chunks of memory on every pass. It is loading pics into a listview. The pics are 1 to 2mb each and it is consuming 30-60mb for each one. How to release the memory once I close the form. Is there anything I can do to reduce it?
Private Sub PhotoFrm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
For Each ImageStr As String In Images
Dim Extension As String = IO.Path.GetExtension(ImageStr)
Dim fs As New IO.FileStream(ImageStr, IO.FileMode.Open)
Dim br As New IO.BinaryReader(fs)
[Code] .....
I have a checkbox on Form2 that will enable an email notification. From Form1, it tests the .Checked property of the Form2 checkbox. What is happening is that the checkbox reverts to unchecked (default at run time) each time the form is closed.
What is the best way to keep the checkbox checked once the form is closed so that it will enable the email notification?
I have two forms with a variable (x) that is set by a trackbar on the second form.
View 3 RepliesI have a dialog box with about a dozen combo boxes. How can I access the checked results of the combos once the dialog form is closed?
View 3 RepliesUsing VB Express 2010 in windows XP Pro 64.
A ListBox shows the project forms names.
On ListBox_DoubleClick
For Each F As Form In xFormCollection
[code].....
On a dynamic form a WebBrowser control connects to a Media Player on one of our servers.After the form is closed the audio is still running even though the FormClosed event is handled.[code]
View 4 RepliesI have a webbrowser I'm making, and my listbox items for form2 disappear once I close form2 and reopen form 2. However, once I restart the program (Close everything) and re-enter, the data is saved. But once I reopen the selected form, the listbox items are lost. Here is my code (It's long)
View 6 RepliesIm having 2 errors when loading the form the first one is: "The connection was not closed. The connection's current state is open" and the another one says "Conversion from string "" to type 'integer' is not valid" and everytime I change cmb_Suc appears: "The connection was not closed. The connection's current state is open" [Code]
View 5 RepliesI have a form that contains a crystal report viewer. When I open this form, it runs a report. I am using a .LDB viewer to tell who is logged into an access database. I noticed that when this form opens, the computer logs into the database and stays logged in. Even when the form is closed, the computer is listed as "logged in". If I run the report again, it just adds another instance of that same computer logged in. Therefore, it continues to pile up logins until the application is closed.
View 1 RepliesI created another form that had a pic and two simple buttons, one button plays music the other will stop the music if played and take you back to the previous form. My problem lies in when the users uses the windows "x" button to flose the form, the music does not stop. I have searched and failed and light that could be shed would be awesome.Apparently I saved the wrong file and am not on my VB box so this code is incorrect. I basically added the music to the resources, dim'd it and activated it with a button. The other button not listed in this code was set to "portal.stop()" and "Me.Close()"
Public Class frmFail
Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.Click
Me.Close()
[code]....
Using vb.net. I've got a main form that displays when application is opened. A popup form can then be opened. If there are other windows opened on the desktop, for example windows explorer, then when the popup form is closed, the main form gets hidden behind windows explorer. You have to move windows explorer out of the way to get to the main form. Is there a way to keep this from happening?
View 2 Replies
