my application will remain open after closing every form. This is a recent issue in previous versions my application would close. I call dispose(true) on all form closing/closed events. (some forms require it on closing instead of close because of some custom made classes.)?
View 5 RepliesForm1 is a mdi container. It has a bunch of forms that can load inside of it as mdi children. If I close each open form inside the form1, and then click the red X at the top right, application exits fine.If I click the red X without closing the forms inside I get: An unhandled exception of type 'System.CannotUnloadAppDomainException' occurred in mscorlib.dll
Additional information: Error while unloading appdomain. (Exception from HRESULT: 0x80131015) However I can break from it. How do I get the application to not show that error? What must I do to fix those inside forms or close when the red x is clicked?
The fact is I'm making an application, which users can install by using a Setup file...once installed the data in the database can be updated by a centralized server. To do this, they can insert a DVD/CD-ROM and export the necessary data towards it. I need to do it that way, because some of the users who really need this data will be using stand alone computers.The application gets it's data from a mdb-file and the connection remains open as long a person works with the application (maybe not the best way to do, but I know :-) )...when the user uses the application, he can perform an export...this exports the .ini-file and pictures (which works fine), but he also needs to export the mdb behind the application...I already tried connection.close() before and connection.open() after the System.IO.File.Copy...but that doesn't seems to work.
View 2 RepliesDim frm As Form
For Each frm In Forms
Set frm = Nothing
Next frm
The above code is what I used in VB6 to close all forms associated with my programs before my program closed. I have been searching for information on how to make sure all forms are closed when closing a VB2008 program.
I have seen info on using the Project Property Shutdown mode When startup form closes and I currently have this set.
Is this all that is really necessary? Will the garbage disposal close everything else to free up RAM?
Also, if I have several forms open and want to close all from the main form without closing each one individually, what is the best approach? Is there a collection like in VB6, go through the collection, compare it to the name of the main form and close it if it is not the main form?
I have two forms and a button on the first form. What i want is when i click the button the second form to show and the first one to close. But this isn't working with: Form2.show() Me.close All the application is closing with the code above.
View 4 RepliesI'm having this problem with a networked app in vb.net. If the program exits normally the port closes fine, however, if it crashes sometimes it remains open and I am unable to close it. The next time I run the program it is unable to open the port because it is already in use. Here's the exception: 10048: Only one usage of each socket address (protocol/network address/port) is normally permitted on how I can reclaim this port, or how I can close it? I tried using the reuse address socket option
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I have a Main form, a Login form and a Splash form. In the project settings I've set the Splash screen.
System.Threading.Thread.Sleep(3000)
Login.ShowDialog()
If Login.DialogResult <> DialogResult.OK Then
[code].....
I am using a toolstripDropdownbutton on the toolstrip to populate the
menuItems.The toolstrip is on the customtaskpane of the window.
Problem comes when the focus is on the customtaskpane, user opens a dropdown menu and without selecting any menu from the dropdown click on the other part of the window. The dropdown remains open and even the user switch to other window it remains open and does not hide. It only hide when user click on the dropdownbutton itself.
Note : I had set AutoClose property to Flase
Basically my script doesn't properly close Word, and it still remains open. Then when I try to run the script again it says its Read-only as its opened..What I need it to do is - put the TextBox1 info onto the DOC - and print it. I don't want it to save, as it's a template. I've tried saving it somewhere else as a "temp" to get rid of this read only but it still doesn't work.Another issue also is that it's trying to close the document before the printing dialog disappears, so I've had to put a timer
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim pName As String[code]....
Im running a program with multiple forms with a menu and toolstrip defined and assigned with properties in a module. each form has the
Call MenuTemplate (Me) in the form_load sub.
My problem is that these menu's have menuitems which need close the shown form and open another. a sample of one of my menuitems is:
[Code]...
I'm having troubles with terminating an application. When I close the main form everything disappears but the process remains active. I think I know the cause, a certain activeX component will not release properly. As soon as I create one, I can't close normally...
dim someActiveXcomponent = new X()
...
<formClosing>
someActiveXcomponent = nothing
GC.Collect()
GC.WaitForPendingFinalizers ' here it hangs
Probably a bug in that component, but the problem is that I don't have much of a choice, I'll have to use that component for now.
Calling
System.Runtime.InteropServices.Marshal.ReleaseComO bject( myObject )
will kill the reference and now the application closes properly.
I have a application I dont want to be close the only way iI want it to close it by the button I have is there away to disable alt f4?
View 2 RepliesI was wondering if you should dispose undisposed resources before closing your application. Maybe it's not necessary to do this because closing your application automatically takes care of this.
View 2 RepliesHave been running this application on 8 PCs since January.My application uses variations of this
Dim Artist4_TBD As New DataView(Me.SSPE_InterCOMM1DataSet.SSPE_ArtScheduler)
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I'm new to programming and to Windows Forms development. I'm using VB.NET and Visual Studio 2008.
My question is: How do I open Notepad from a Windows Forms application, and then place some text string in the Notepad window?
I have googled high and low to find an answer to this but I must be searching wrong.I have an application which has a listview displaying some items that are stored in a SQL Compact database. I am using a second form to add new items to this list directly into the database.When the second form closes I want to call the sub in my first form to refresh the list from the database.
How can I get it to fire the form1 sub routine on the close event of form2
I'm trying to understand why my print preview is not showing the contents of the file (I've double checked that the file is in the correct directory and is not empty)
Imports System.IO
Imports System.Drawing.Printing
Public Class Form1
[Code].....
Im running a program with multiple forms with a menu and toolstrip defined and assigned with properties in a module. each form has the Call menuload (Me) in the form_load sub.
My problem is that these menu's have menuitems which need close the shown form and open another. a sample of one of my menuitems is:
Module MenuTemplate
Friend WithEvents frm As Form
Friend WithEvents menustrip As New MenuStrip
[Code].....
I want to compare differences between two tables in my database with identical schemas.
vb.net
DataTable1.Merge(DataTable2)
Dim changedRows As DataTable = DataTable1.GetChanges
'changedRows is always Nothing. Why???
The DataTable1 is updated with rows from DataTable2 correctly. i.e. missing rows are added and datarows that don't match are updated. But the RowState of each row is still unchanged. I need to have the rowstate (added/modified/deleted) so that I can update the database table.
I'm writing an app that prints of batches of documents to clients for posting. The printer uses OMR to collate and fold the documents into envelopes automatically.The document inputs will either be Word or Adobe Acrobat. I have routines to print off each document type while adding OMR on the fly.
The issue I have is that when the routine for PDF is run, the Adobe file is not closing properly. So when the next clients batch is being printed, there is an error saying that the document is locked by another user or process.I'm using the Acrobat 7 reference library and have Acrobat 7 installed on my machine (full blown product, not reader,) I'm closing the PDDocument, the AVDocument and the application in the code and I've even wrote a routine to kill the process to no avail.
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How do I find an open Reply that I have lost?
View 1 RepliesI am using Visaul Basic 2008 and have 3 textboxes and 3 columns in Listview. My problem is that when I save the data from textbox to listview the data has been saved successfully but when I close the form and open it again there is no data to seen mean all the data destroyed.
The coding structure of my application is given below
PrivateSub btnSaveRecord_Click(ByVal
sender As System.Object,
ByVal e
As System.EventArgs)
Handles btnSaveRecord.ClickDim
[Code] .....
I have a windows application that contains a simple login form. After the user enters their login info and clicks the OK button, my code validates, and if true, the code instructs to close the form and open another. When the user clicks the OK button, after the validation, I would like the form to stay open long enough to display a message on a label(the msg will tell them that the program is searching for updates to the application) After, the msg is displayed, I want the form to close and another form to open. .
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Here is my problem: when I create a new form i want to close the old so it is not still running in the background. As in if the were to move on to a second form and the X-out the first form would still keep the program running. Normally i would do [me.close] and when that didnt work i tryed [me.form1.close] and then [dim frm1 = form1 frm1.close] with no luck. Could some one please tell me where i have gone wrong?
View 5 Repliesi have a problem with trying to get 2 forms to close at different times using a timer on each of the 2 forms.This is my form layout:frmMainFrm1 Frm2..Frm1 and Frm2 are identical to each other. FrmMain has 2 buttons on it. One button to call Frm1 and the other to call Frm2.Frm1 and Frm2 each has a timer. It counts down to 0 and then does a .close(). However, if i pause between clicking the second button they both seem to always disappears at the same time.then they both disappear at the same time.... which shouldn't happen since i clicked the Frm2 box 10 seconds AFTER Frm1... So Frm1 should hide before Frm2 does...but it does not.
View 4 Repliesi have a problem with trying to get 2 forms to close at different times using a timer on each of the 2 forms.
This is my form layout:
frmMain
Frm1
Frm2
Frm1 and Frm2 are identical to each other. FrmMain has 2 buttons on it. One button to call Frm1 and the other to call Frm2.Frm1 and Frm2 each has a timer. It counts down to 0 and then does a .close(). However, if i pause between clicking the second button they both seem to always disappears at the same time.I would do something like this...
Click on the first button (showing the Frm1 form)
wait about 10 secs...
Click on the second button (showing the Frm2 form)
[code]......
, When you hit esc a 2nd form comes up on top of the first. On the second form you are able to close the first or/and reload the first with different info. My problem is whenever i try and reload the 1st frm it doesn't close it just opens it again. So if i do it seven times i have seven windows of the first frm open... my codes is something likes this
Dim frm1 as new form1
frm1.close()
From what i was thinking it has to do with the "New" Part in the dim statement....
In my one form I have a cancel button whcih is supposed to the form when the button is clicked. But its not closing the form. What could be possible reasons. I am using VS2008.Net3.5
The code is:
Private Sub cbCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cbCancel.Click
[code].....
i have a form (form1 for example) and there is a button ( button1) and too many controls in this form and i have form(form2) and too many controls in this form
i want when i click the button1 i need every control in form1 to disappear and instead i want form2 and it is contents to be loaded in the form1
OR
the second form is showing without the user noticing that there's too forms
(replacing)
can i do this and if i can't , can i create a custom control/controls to do this
and if i can how can i do this?
What I need to know is if there is a way to combine forms. What I mean is, that when the program is open there is only 1 item on the toolbar instead of multiple shown on the toolbar. For example, I open the main app. and click on notes. The notes would open another form, but I wouldn't want another item on the toolbar, just the main 1, and if the X is pressed on the second form, it should just close that form, not the whole program. I mainly want this so that all the forms will minimize at once... and won't have the extra clutter of all the forms having a separate item added to the toolbar. So simply, I want 1 main form shown on the toolbar and when multiple forms are opened from the same project, it doesn't add to the toolbar and just keeps the one main tool bar.
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