Me.Close does not work

Question

I\'m working with VB.net. I’m having problems while I connect my application to my database today so I wanted to add an error handling to close the form.

The problem

Answer 1

Close will close a form, but only if it has no more code to run.

That is, there are two conditions that need to be fulfilled for a form to close:

• Close must be called
• Any method still running must be left

I suspect that another method is still running code, for instance a loop or other code that causes the form to remain open.

Furthermore, the form will get re-opened automatically once you start accessing its members form elsewhere, due to an infuriating property of VB to auto-instantiate forms.

Answer 2

Technically the form is closed but not disposed, which means you can still reach the object but all controls in it are no longer reachable.

So you will have to call dispose from somewhere to get rid of it completely.

Answer 3

You can check for what reason the form don't get closed.

Private Sub Form1_Closing(ByVal sender As System.Object, _
ByVal e As System.Windows.Forms.FormClosingEventArgs) _
Handles MyBase.FormClosing

   MsgBox(e.CloseReason.ToString)

End Sub

You can add to the Form_Closing event the following The e.Cancel will close the open operation. But first check the reason.

Private Sub Form1_Closing(ByVal sender As System.Object, _
ByVal e As System.Windows.Forms.FormClosingEventArgs) _
Handles MyBase.FormClosing

  e.Cancel = True

End Sub