VB.NET Form Hiding Issue - vb.net

Question

I have a custom form, B. B is created by A, which has a handle to B.VisibleChanged.
B only has an OK and Cancel button on it, and I want to do some logic when OK is hit.
B's OK button is dealt with like this:
Me.Result = Windows.Forms.DialogResult.OK
Me.Hide()
The code in A is properly hit and run, but it never hides B. When I check the values of the properties on B, it shows me Visible = False.
Does anyone have any suggestions as to the possible cause of this issue?
Edit
This form was shown using the Show() command, as I'm making a later call to have the form flash using FlashWindow().

Answer 1

Not exactly sure about your question.
why not use me.Close() instead of me.Hide?
Is it OK to have multiple instances of B at a time? If not, go for ShowDialog.
If you can rephrase the question, someone can probably resolve your problem.

Answer 2

I suppose you want to display a messagebox with an ok & cancel button. Instead of using a form use a mesagebox.
eg:
DialogResult dgResult = MessageBox.Show("Click Yes or No", "Test App", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
if (DialogResult.OK == dgResult)
{
//Do what you want.
}
else
{
//Do nothing.
}
If you are going to use a form, to do that & wanted to modify the parent's form, it would be advisable to use delegates to prevent form B from modifying form A's variables.
Else: (Not recommended)
Declare form B as a member variable of form A.
when required instantiate form B.
do B.ShowDialog();
internally in OK & cancel do this.dispose();
Again when you need form B just instantiate. re - instantiation will not be too much of an overhead if you dont call it very often.
But if you only need OK Cancel, use message box instead.

Answer 3

The show/hide approach works for me:
Public Class frmViewChild ' your form A
Private WithEvents _edit As frmEdit
'code
Private Sub editCell()
Dim PKVal As String
Dim PKVal2 As String
Dim fieldOrdinalPos As Integer
Dim isLastField As Boolean
If _edit Is Nothing Then
_edit = New frmEdit
_edit.MdiParent = Me.MdiParent
End If
'code
_edit.init(<params>)
If Not _edit.isNothing Then
_edit.Show()
_edit.WindowState = FormWindowState.Maximized
_edit.BringToFront()
End If
End Sub
'code
Private Sub _edit_VisibleChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles _edit.VisibleChanged
If Not _edit.Visible Then
WindowState = FormWindowState.Maximized ' revert after closing edit form
End If
End Sub
Public Class frmEdit ' your form B
Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOK.Click
Dim ret As Integer
doOK(ret)
If ret > -1 Then ' no error
Me.Hide() ' close form, but didn't cancel
End If
End Sub
HTH