I have a message box that pops up when i press a close button that basicaly says" Are you sure you want to quit" but when i click the no button or cancel but the program closes any how
this is my code:
'Close Button
Private Sub BtnClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnClose.Click
Dim result = MessageBox.Show(" Are you sure you want to quit", "Are you sure?", MessageBoxButtons.YesNoCancel)
Me.Close()
End Sub
You are doing nothing with the value of result. You need to inspect the value and determine whether you call Me.Close(). Code approximately
If result = DialogResult.Yes Then
Me.Close()
End If
If you are using then message box to prevent accidental form close, your approach may not work always. The message box will not be shown if the user closes the application in any other way than clicking the "Close" button.
Try using the FormClosing event.
'Close Button
Private Sub BtnClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnClose.Click
Me.Close()
End Sub
'FormClosing Event
Private Sub MyForm_Closing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
If MessageBox.Show(" Are you sure you want to quit", "Are you sure?", MessageBoxButtons.YesNoCancel) <> DialogResult.Yes
e.Cancel = True
End If
End Sub
You issue Me.Close() no matter what the result is. Check the result and execute Me.Close() only the user clicks Yes
Private Sub btnClose_Click(sender As Object, e As EventArgs) Handles btnClose.Click
If MsgBox("Are you sure you want to quit?", MsgBoxStyle.YesNo Or MsgBoxStyle.DefaultButton2, "Close application") = Windows.Forms.DialogResult.Yes Then
Me.Close()
End If
End Sub
Copy this:
Dim result = MessageBox.Show(" Are you sure you want to end the Application", "School Management System", MessageBoxButtons.YesNoCancel)
If result = DialogResult.Yes Then
Me.Close()
End If
Dim result = MessageBox.Show(" Are you sure you want to quit", "System Reminder", MessageBoxButtons.YesNo)
If result = DialogResult.Yes Then
Me.Close()
End If
If it is a child form, it opens as a result of a button in a main form:
If MessageBox.Show(" Are you sure you want to exit the application ? ", "Exit ?", MessageBoxButtons.YesNo) = DialogResult.Yes Then
Me.Hide() : MainForm.Show()
Else
e.Cancel = True
End If
You can use the following code:
Dim closingfrm = MsgBox(" Are you sure to close", MsgBoxStyle.YesNo)
If closingfrm = DialogResult.Yes Then
Application.Exit()
End If
Related
I try to exit my application with form closing event but confirmation message box appears twice.
This is what I have:
Private Sub FrmMainPlatform_FormClosing(sender As Object, e As FormClosingEventArgs) _
Handles MyClass.FormClosing
Dim result As Integer
result = MessageBox.Show("Are you want to close", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.None)
If (result = DialogResult.No) Then
e.Cancel = True
Else
Application.Exit()
End If
End Sub
I also tried with this solution:
Private Sub FrmMainPlatform_FormClosing(sender As Object, e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
Select Case MessageBox.Show("Are you sure you want to exit?", "Confirm", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
Case Windows.Forms.DialogResult.Yes
'nothing to do here the form is already closing
Case Windows.Forms.DialogResult.No
e.Cancel = True 'cancel the form closing event
'minimize to tray/hide etc here
End Select
End Sub
The form is closed but the application i still running.
#karihalan, I believe, you first need to make sure that the Form1 is actually the startup form of your application. You can confirm this from Project's properties. If so, then you don't even need to call Application.Exit().
Second, try replacing Me.FormClosing with MyBase.FormClosing... Like so:
Private Sub Form1_FormClosing(sender As Object, e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
Also, make sure you are not subscribing to form closing event twice, maybe using Addhandler statement.
Hope this would help.
UPDATE: You can try this to close all forms. I would put it in the main formclosing event.
For each f as Form in My.Application.OpenForms
f.Close()
Next
Get rid of that first codeblock. This is what I did and it asked my if I wanted to close only once and it closed when I clicked yes and didn't when I said no.
Private Sub Form1_FormClosing(sender As Object, e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
Select Case MessageBox.Show("Are you sure you want to exit?", "Confirm", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
Case Windows.Forms.DialogResult.Yes
'nothing to do here the form is already closing
Case Windows.Forms.DialogResult.No
e.Cancel = True 'cancel the form closing event
'minimize to tray/hide etc here
End Select
End Sub
Private Sub FrmMainPlatform_FormClosing(sender As Object, e As FormClosingEventArgs) _
Handles Me.Closing
Dim result As Integer
result = MessageBox.Show("Are you want to close", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.None)
If (result = DialogResult.No) Then
e.Cancel = True
Else
Application.Exit()
End If
End Sub
Hi,
I got temporary solution for this issue. The Exit method does not raise the Closed and Closing events, which are obsolete as of .NET Framework 2.0
Perhaps your application has more than one form, whenever you apply a closing event on a startup form it will be repeated as much as the number of forms you have. I have faced the same issue and got it solved by changing the event handles on the other forms Not the startup one just like the example below:
From:
Handles Me.Closing
To:
Handles MyBase.Closing
I have 2 forms in my project. Users cannot exit from the first from, frmOptometry. I have this implemented this way:
Private Sub frmOptometry_FormClosing(sender As Object, e As FormClosingEventArgs) Handles Me.FormClosing
MessageBox.Show("You can only close the application from the receipt screen!")
e.Cancel = True
End Sub
The second form, frmReceipt can be exited from. I have it implemented this way:
Private Sub frmReceipt_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
If MessageBox.Show("Are you sure you want to quit?",
"Obi-Wan Optometry Closing",
MessageBoxButtons.YesNo,
MessageBoxIcon.Exclamation) =
DialogResult.No Then
e.Cancel = True
Else
frmOptometry.Close()
End If
End Sub
Right now, it does not close the program completely because it goes to the frmOptometry_FormClosing and prevents it. What should I do to fix this? Is there anyway to figure out where the user is trying to shut down the program and then decide from there?
One way to solve this is by introducing a flag (say, called FromReceipt) which indicates who asks the frmOptometry to close itself.
Something like this on frmOptometry will do:
Public FromReceipt As Boolean = False 'Add this
Private Sub frmOptometry_FormClosing(sender As Object, e As FormClosingEventArgs) Handles MyBase.FormClosing
If Not FromReceipt Then 'add this condition
MessageBox.Show("You can only close the application from the receipt screen!")
e.Cancel = True
End If
End Sub
And then on the frmReceipt:
Private Sub frmReceipt_FormClosing(sender As Object, e As FormClosingEventArgs) Handles MyBase.FormClosing
If MessageBox.Show("Are you sure you want to quit?",
"Obi-Wan Optometry Closing",
MessageBoxButtons.YesNo,
MessageBoxIcon.Exclamation) =
DialogResult.No Then
e.Cancel = True
Else
frmOptometry.FromReceipt = True 'Add this line to tell the frmOptometry: this time you can really close it
frmOptometry.Close()
End If
End Sub
This is my code:
Private Sub frmName_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
If e.CloseReason = CloseReason.UserClosing Then
If MessageBox.Show("Are you sure you want to logout?", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Question) = Windows.Forms.DialogResult.Yes Then
Me.Close()
Else
e.Cancel = True
End If
End If
End Sub
If I click no it will cancel the form closing, but when I click yes the message box will appear repeatedly. What i want to happen is when I click the close button, and clicked yes it will close the form. How can I fix this?
As the Form is already closing, there is no need to call Close() again. The following code should work:
Private Sub frmName_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
If e.CloseReason = CloseReason.UserClosing Then
If MessageBox.Show("Are you sure you want to logout?", _
"Exit", MessageBoxButtons.YesNo, _
MessageBoxIcon.Question) = Windows.Forms.DialogResult.No Then
e.Cancel = True
End If
End If
End Sub
Is this sufficient code for an exit button on my form?
This is my code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim response As MsgBoxResult
response = MsgBox("Do you want to close form?", MsgBoxStyle.Question + MsgBoxStyle.YesNo, "Confirm")
If response = MsgBoxResult.Yes Then
Me.Dispose()
ElseIf response = MsgBoxResult.No Then 'Button to exit the program completely
Exit Sub
End If
End Sub
Yes, it is sufficient but:
You should use Me.Close() instead of Me.Dispose().
If this is the exit from your application completely and you have any unmanaged resources (e.g. database connections, files open, COM objects, etc). you should close them/clean them up.
I have used the below code but its not showing the msgbox. What is wrong with this code ?
Private Sub frmSimple_Disposed(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Disposed
Dim result = MsgBox("Are you sure you want to Exit ?", vbYesNo)
If result = DialogResult.Yes Then
me.Close()
End If
End Sub
This code runs after the form has been closed, when it's being disposed.
Depending on how you're showing the form, it might not get disposed at all.
You need to handle the FormClosing event and set e.Cancel to True if you want to cancel the close.
Private Sub frmProgramma_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
If MessageBox.Show("Are you sur to close this application?", "Close", MessageBoxButtons.YesNo, MessageBoxIcon.Question) = Windows.Forms.DialogResult.Yes Then
Else
e.Cancel = True
End If
End Sub
or that is how i use it everytime over and over...
Use FormClosing event. MSDN
Dim result = MsgBox("Are you sure you want to Exit ?", vbYesNo)
If result = vbYes Then
me.Close()
End If
If MessageBox.Show("¿Exit?", "Application, MessageBoxButtons.YesNo, _
MessageBoxIcon.Question) = DialogResult.No Then
e.Cancel = True
End If
I think it is more clean and simply!
If MsgBox("Are you sure you want to Exit ?", vbYesNo) = vbNo Then e.Cancel = True
This code may not be 'efficient' but allows the user to save their work before closing, close the form if they press 'No' or return back to the form without closing if they press 'Cancel'.
Dim dialog As DialogResult
dialog = MessageBox.Show("Save before closing?", "Exit", MessageBoxButtons.YesNoCancel)
If dialog = DialogResult.Yes Then
'Put a save file dialog here or Button.PerformClick() if you already have a save button programmed
ElseIf dialog = DialogResult.No Then
Application.Exit()
ElseIf dialog = DialogResult.Cancel Then
e.Cancel = True
End If