Closing Child Form Without Closing The Parent?

Apr 27, 2011

I have the following code to close a form which is a child. The problem is that when it closes, it closes the MDI parent too.

Private Sub frmTransaction_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
If ListView1.Items.Count >= 1 Then

[Code]....

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How To Work On Both Parent And Child Form Without Closing Child

Apr 10, 2011

i have created two forms A and B when button in form A is clicked B is invoked when B is running its not possible to work on A until i close form B. How can i work on A without closing B

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VS 2010 Child Form Tell Parent Form It Is Closing And Send ID?

Apr 2, 2012

I have a parent form that has a list of items and each item has a unique ID. The user can open one or many of the items in a child form (it is set up in a tabbed MDI), but it can only open one instance of each item at a time.

In the parent form, I was going to make a collection (or something like that, maybe there is a better way) to keep track of which items are open in the child forms. I need to know when each child is closed so that it can be removed from the collection and reopened at a later time. I was thinking that when the child form closes, it somehow does something (like raise an event) that tells the parent form to remove the unique ID from the list of current open child forms.

My questions are, is this a good way to do this and I am pretty sure I would use the form closed event in the child form to update that parent form, but as well, I didn't know if this is the best way of handling it.

If raising the event is a good way, are some examples on how to do it out there? I found some for controls, but not while the form is closing/closed.

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Interface And Graphics :: MDI Parent / Child - Child To Check To See If It Is The Last Child Object Before Closing

Feb 18, 2011

Im working with MDI parent/child objects. when closing the child objects i need the child to check to see if it is the last child object before closing. i couldn't find anything on google, maybe im searching for the wrong thing.

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Closing Child Form And Parent Form?

Dec 29, 2010

i have a parent form which is having a grid view. In the KeyDown event of the grid view i am calling a child form. If the user closed the child form, my application should close both the parent form and child form. What i have done is, i declared a boolean in the child form and passed the boolean value to parent. May be the code below will give the picture of what i am trying to do.

Private Sub gvJournalEntryDet_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles gvJournalEntryDet.KeyDown

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Prevent MDI Parent FormClosing From Closing MDI Child Before Check?

Oct 9, 2011

I'm trying to give the user a chance to cancel FormClosing of MDI Parent by throwing a "Are you sure?" msgbox with an e.cancel however when FormClosing is invoked by MDI Parent, all MDI Children close first, before the msgbox appears.

I was wondering if there's an easier way to prevent MDI Children from closing rather than having to e.cancel every child form's FormClosing until I get a positive response to close and then push all the close events on the children because that seems like too much of a hassle if you have a lot of MDI Children.

EDIT: I guess the only solution I can find is adding If e.CloseReason = CloseReason.MdiFormClosing Then e.Cancel = True to the FormClosing event and using ApplicationExit instead.

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VB 2010 - Opening And Closing Child Forms Inside MDI Parent?

Oct 29, 2011

It is my goal to write a program to run a retail store. I am an intermediate Access developer, so I have a good grasp of the basics.However, I find that developing in VB 2010 is quite different.I will have forms for:

Company Information
Employee Information
Supplier Information
Customer Information
Invoices & Purchase Orders

All I really need to know at this point is the code to open and close each form.

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Run A Sub Procedure Or Possibly A Method When Closing A Child Window And Returning To Parent

Mar 19, 2012

I am making an address book for my final project in school, and have a few questions. In my address book, there is a feature to add groups so you can sort your contacts. The problem is, the add group feature is in a different form, I tried calling a procedure from the parent form to refresh all data but it does not work.[code]

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Closing All Forms Within Mdi-Parent Form?

Jun 21, 2010

How will i close all the forms within my main form? Everytime I click on the menus of my main form,I'm setting my main form as MDI-Parent form and then loading a new form as it it is the child form if I'm not mistaken. I have a log-out menu, and what I want to happen is everytime I log-out all the forms within my parent form will be closed. How will I do it? Here are some of my codes.

[Code]...

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VS 2008 Closing All Forms When Program Closes Vs. Closing All But Main Form

Jun 4, 2010

Dim 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?

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Bypass Child Form Closing In .NET To Get Same Behavior As VB6?

Oct 14, 2010

VB6 application MDI-Child architecture. Closing event is handled via QueryUnload event in both MDI and child form. Order of event trigger is MDI form closing(QueryUnload) event fires first followed by child form closing event(QueryUnload, I would like to call it as FormClosing itself as it is more comfortable and correct)Now after migration, order of event trigger is occuring in reverse. Child form closing event is firing first followed by MDI form closing event. We want to reverse the event triggering badly because of the logic written inside the closing events. Swapping the logic inside the events is not a viable option considering the huge changes we need to make (we have 31 vbprojects with 31 MDI forms and numerous child forms).

How I can make the MDI's closing event to be triggered first before child's closing event?

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Closing Child Form Closes Application?

Aug 16, 2011

I've made a Windows Forms Application that runs fine. It has some buttons that open child forms, which can simply close again without any problem. As I need the form to be in a dll, I changed the application type to a class library and added an extra project containing an exe-file that only references the main form in the dll and shows it. So far so good...

The main form is basically a tabcontrol with a bunch of controls, buttons among others. Five buttons on different tabs use the same handler to open a child form. When I click the button on the first tab everything works fine. The form opens and when it closes, only the child closes. When I click any of the buttons on the other tabs, the child form opens and when it closes again, both the child and the main form close...

I am stumped, especially since all buttons use the same code to open the child form and everything appears to be completely identical, yet the results are not. Below I have pasted the code that opens the main and child forms. I am undoubtedly not looking in the right place, but I also have no idea where to look anymore, let alone what to look for...

The code opening the main form:
Public Sub StartProgram()
'Load the form and show it
Dim frmProgram As frmMain = New frmMain

[Code].....

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Windows Form Closing Automatically When Parent Window Gets Focus?

Jan 24, 2012

VB Windows form Application.. I am developing an application of which part of the program is around configuration settings allowing the user to enter configuration items. When the menubar item for configuration menu is clicked on the main form the menu opens.This is fine but the mainform should not become active again until the configuration menu has closed. This does not happen right now and the mainform simply comes to the foreground and the configuration form goes to the background... I realize that coding an event on the Child form to handle this would not work because the child window loses control and the main form gains control.. I thought of coding a function as follows on the main form but it does not seem logical because i would have to add to it for everyform and do checking to make sure the child is actually open before trying to close it..

Private Sub Form1_GotFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.GotFocus
MailSettingsWindow.Close()
RentalSettingsWindow.Close()

[code]....

I did away with the above sub routine and used the below code as per the recomendation of using showdialog which works just as i was looking for.

Private Sub MailingAndEmailSettingsToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MailingAndEmailSettingsToolStripMenuItem.Click
Dim MailConfig As New MailSettingsWindow()
MailSettingsWindow.Showdialog()
End Sub

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Closing MDI Child Form By Checking Any Process/Operation Is Running?

Jan 4, 2012

I'm developing Applications in VB.NET 2008.

I have MDI Parent Form and i'm going load all form as MDI child. Here i'm going to give option to "Close All" toolstripbutton in top of MDI Parent to close All mdi child forms.

Now i would like to check that On click of Close All Toolstripbutton , i have to close all mdi child form but except those form is on process, example, I have opened/Loaded 5 MDI child forms within MDI Parent Form.

Child forms are ( just for example ) ,

1. Customer details Form

2. Item Details Form

3. Import Orders Form

4. Stock Details Form

5. Production Entry Form

Here 3.Import Orders form is importing from Excel with 5000 records and 4. Stock details form exporting to excel.

So now if i click "Close All" button then i have close only Idle form i.e 1,2 and 5 but i should not close 3 and 4 since its on some process.

So Is there any .NET option to check that form in process/idle or do I have to check manually by having any Flags ?

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Closing Application Via X Button Without Closing Forms Inside Mdiparent Causes Exception Error

May 3, 2010

Form1 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?

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C# - How To Detect Closing Of Parent Process

Apr 20, 2011

I am working on a .NET console app which needs to clean up resources on exit. The problem I'm running into is that I don't get any notification if the cmd parent is closed via the console window [X], via Task Manager/Process Explorer or programmatically with WM_CLOSE. I can live with not being able to handle Kill Process from Task Mgr. or ProcExp. WM_CLOSE of the parent console is the most likely way that this application will be closed before it's finished processing.

Here are the events I've tried to register for so far:
AppDomain.CurrentDomain.ProcessExit += CurrentDomainProcessExit;
AppDomain.CurrentDomain.UnhandledException += CurrentDomainUnhandledException;
Console.CancelKeyPress += ConsoleCancelKeyPress;
Application.ApplicationExit += ApplicationApplicationExit;
[Code] .....

These events fire properly when I send a CTRL+C from the console or the application finishes uninterrupted. But none of them fire when the parent app (cmd console) is closed. (The parent/grandparent processes aren't CLR so I'm not sure I would ever receive those Disposed/Exited events. Those are just shots in the dark.) I've looked at some pInvoke stuff but I would rather not go down that road if .NET is an option. Is there a way to detect and handle a shutdown in these situations? I am open to any .NET, pInvoke/Win32/C/C++ solution. (Basically any way it can be done on the Windows platform.). I'm still working with .NET 2.0 so I can't use anything introduced in .NET 3.0+

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Closing Question For MIDI Child?

Apr 26, 2010

I have setup a dialog result to ask a question on closing, if they would like to close then the child can close, if the child is needed to remain open then the child needs to stay open.

Private Sub BugAManagerTimerForm_FormClosed(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosedEventArgs) Handles MyBase.FormClosed
If StopButtonPressed = False Then

[code]....

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Closing A Form With Yes/no?

Jun 11, 2011

I a suppose to when the user closes form1 display a messagebox. The messagebox should ask the user if they are sure. If they click yes let them close the form otherwise do not let them. This is the code I have

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim result As DialogResult

[Code]....

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Passing Data From Child To Parent Form Which Is A Child Of Another One

Apr 17, 2012

i have three forms

when i click button1 on form1=====> form2.showdialog()
then click button 1 on form2 =====> form3.showdialog
then click button 1 on form 3 =====>

[code].....

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.net - On-closing Form Return Value?

May 27, 2010

Is there a way that a form returns a value? something like ...

sub main()
Dim task as new TaskForm()
dim res as integer=0
res = task.opendialog()
end sub

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Closing A Form And Saving?

Mar 15, 2012

i have a form with a listbox. the listbox can be edited (things added/deleted) and when the form is closed i would like the items in the listbox to be saved when the red "x" in the top right corner is clicked

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Closing A Windows Form From Another?

Dec 31, 2009

i want to check if a certain form is loaded and if so then close it from another form.

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Closing An Inherited Form ?

Oct 27, 2009

I am having a problem with closing a form which I have inherited I have a form called frmAddForm_Simple, which contains 4 main controls (A Data Grid, A Save Button, A Close Button and a Text Box). The idea around the form is to create a form which could be used for inputting of many different types of data which are all entered in the same way (i.e. to add a new row to a database for [Status] table or [Location] table, all of which contain 2 columns in the database (an [Id] and a [value]). On the form I have a property called _FormChanged, which when the textbox text changes, sets the property to True. I then have the following code on the Close Button:-

Public Sub btnClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClose.Click
If _FormChanged Then
If MessageBox.Show("Are you sure you want to close and discard any changes?", "Discard Changes",

[CODE]...

Is opened as a dialog (ShowDialog) and when I go to close the inherited form (by click on btnClose) and answer No to the above MessageBox the form closes anyway. Using the Debugged I have worked out that the following events occur in sequence (all of which runs in the Master Form mentioned above):-

1) btnClose_Click sub Routine runs

2) I answer No to the question do I want to close the form

3) The debugger steps over the Me.Close() line (as expected)

4) The debugger jumps up to the Sub Initialise (where ShowDialog was called from) and closes the form.

So at no point has the debugger even ran a line of code which reads Me.Close(), but the form closes anyway so Im fairly confused as to why the form should close.
My Master Form (frmAddForm_Simple) Code:-

Public Class frmAddForm_Simple
Private _FormChanged As Boolean = False
Private _FormLoading As Boolean = False

[CODE].............................

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Closing Form And Loading Another

Mar 6, 2009

I've got 2 forms; form1 and form2.
Button1 is added to form1.
When I click button1, I want to close form1 and open form2.

I tried the following.
me.close
form2.show
Its not working. Form1 gets closed but form2 is not showing up.

When I use the following code
me.hide
form2.show, its working.
But hide will not unload form1 and it will still occupy memory.

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Closing Form And Not Program?

Sep 13, 2011

I am trying to close Form1 and then open Form2, but when i do it closes the whole program.I have tried to just hide Form1, but then i can't close the program and I have tried this method too but could not get it to work?

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Closing Form And Reopening?

Jan 7, 2009

if there is a way that you can close a form and reopen it. The reason is because I have created a tic tac toe game, but at the end I want them to be able to play again. The problem is that if I want them to start over I would have to set alot of stuff back to 0 and or change the buttons on the screen etc. Is there a simple way to just close the form and have it reopen?

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Error While Closing MDI Form

Mar 6, 2011

I'm working on an application that opens different mdi child forms to do different things whit the data from an Access database. For example I have a form that searches an item in the data base. The other form shows the items details or history. All database communication is handled by data-manager classes. Each whit it own instance of the class. The child forms have no connection to each other (passing of the item is by global variable object).The error occurs after the formclosed event from the closing form.The same error occurs when I open the form one by one.When I have two different child's open and I close one I get this error message: System.InvalidOperationException was unhandled. In a no source Available window.to open the two child forms (from a menu in the mdi parent) a use this code:[code]

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Form Closing And Opening

Dec 5, 2011

I have form1 and form2 and have when a user clicks on an icon on form1 it shows form2 and hides form1. But how would I get it to when a user closes form2 it will show form1 again?

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Form Not Closing / Does Not Hide

Jul 8, 2009

[Code] when the program is launched normally it works fine but when the program is passed the appropriate command line my program responds accordingly except for the fact that the first form does not hide() when told to. its like the program just skips that line and shows the recovery form.

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Forms :: Form Not Closing?

Nov 6, 2009

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].....

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