show confirm close message in all project forms vb.net? - windows

Question

I have Project containing multi forms
main page and others inside main page
used next code to make confirm close in main page
Public Sub MyForm_FormClosing(ByVal sender As Object, ByVal e As FormClosingEventArgs) Handles MyBase.FormClosing
If MessageBox.Show("Do you want to close the form?", "Confirm", MessageBoxButtons.YesNo) <> DialogResult.Yes Then
e.Cancel = True
End If
End Sub
and want the confirm message to show in all forms not only main page !

Answer 1

Here is a process I use because MessageBox while it is nice I like to design my own.
You will see some variables in the code that look like this
Public gvalertType As String
Public gvRESEdit As String
These are declared in a Module
Now we need some code for the frmAlert You will use If and ElseIf to trap multiple errors. I will post a screen shot of the frmAlert
Private Sub frmAlert_Load(sender As Object, e As EventArgs) Handles MyBase.Load
If gvalertType = "10" Then
btnNO.Visible = True
lblAI.Text = " Caution "
tbAlert.Text = "OK To Delete " & vbCrLf & vbCrLf & "NO Do NOT Delete"
End If
End Sub
Private Sub btnOK_Click(sender As Object, e As EventArgs) Handles btnOK.Click
If btnNO.Visible = True Then
gvRESDelete = "YES"
End If
Close()
End Sub
Private Sub btnNO_Click(sender As Object, e As EventArgs) Handles btnNO.Click
gvRESDelete = "NO"
Close()
End Sub
OK Now on the form and button click that calls the frmAlert.
Because you are changing forms this is why the variables are declared in a Module.
Private Sub btnDelete_Click(sender As Object, e As EventArgs) Handles btnDelete.Click
gvalertType = "10"
frmAlert.ShowDialog()
If gvRESDelete = "NO" Then
btnBack.Focus()
Return
End If
If gvRESDelete = "YES" Then
DeleteSiteData()
End If
End Sub