keydown in userform

[Undo]

Hi

within this code

Private Sub ComboBox1_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)
    If KeyCode = 49 Then
    CommandButton1_Click
    End If
End Sub

it can be running everywhere in the userform1 content?
or I must repeat it for every textbox and buttons?