[RESOLVED] Events triggered when typing in ComboBox dropdown list

Hi,

I need code to be triggered by selecting a ComboBox entry with the mouse, or by typing the entry in.

When typing it in, the SelectedIndexChanged event gets triggered multiple times, which is a problem so I added a timer to bypass it.
I can't have MyCODE running more than once.

For some reason both SelectedIndexChanged and ComboBoxTimer_Tick are executing MyCODE.
Can anyone suggest a fix?

Code:

---

    Private Sub ComboBox_KeyPress(sender As Object, e As System.Windows.Forms.KeyPressEventArgs) Handles cboShape.KeyPress
        Timer_ComboBox.Enabled = False
        Timer_ComboBox.Enabled = True
    End Sub
    Private Sub ComboBoxTimer_Tick(ByVal sender As System.Object, ByVal e As EventArgs)
        Timer_ComboBox.Enabled = False
        Timer_ComboBox.Dispose()
        MyCODE
    End Sub
    Private Sub cboShape_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles cboShape.SelectedIndexChanged
        If Timer_ComboBox.Enabled = False Then
            MyCODE
        End If
    End Sub

---

This should work. I'm assuming the timer is called ComboBoxTimer

Code:

---

Private Sub cboShape_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles cboShape.SelectedIndexChanged
    If ComboBoxTimer.Enabled = False Then
        ComboBoxTimer.Enabled = True
    End If
End Sub

Private Sub ComboBoxTimer_Tick(ByVal sender As Object, ByVal e As EventArgs) Handles ComboBoxTimer.Tick
    ComboBoxTimer.Enabled = false
    MyCODE
End Sub

---

That's brilliant. Thank you so much.

Oh no, it's not quite resolved. Timer_Tick loads a modal form, which for some reason triggers SelectedIndexChanged, restarting the timer and causing it to tick again.
Is there anything I could do to prevent this?

Code:

---

Private Sub ComboBoxTimer_Tick(ByVal sender As Object, ByVal e As EventArgs) Handles ComboBoxTimer.Tick
    ComboBoxTimer.Enabled = false
    FormWait.ShowInTaskbar = False
    Application.ShowModalDialog(Application.MainWindow.Handle, FormWait, False)
End Sub

---

I worked it out. I selected another control before loading the form, removing it's focus which stopped SelectedIndexChanged from being triggered again.

Quote:

---

Originally Posted by sgrya1

I worked it out. I selected another control before loading the form, removing it's focus which stopped SelectedIndexChanged from being triggered again.

---

:thumb:

Perhaps you should have been handling SelectionChangeCommitted rather than SelectedIndexChanged.

Also, what are you actually trying to achieve? I strongly suspect that there should be no Timer involved but it's hard to say because this is one of those questions where you have described how you're trying to achieve something but not what that thing is that you're trying to achieve.