Activate UserForm with only one 'Enter'

Question

I want to start up the UserForm with ONLY pressing on a number and on Enter (so no clicking involved). The problem I have is with pressing Enter twice. What happens if I press E

Answer 1

Ralph's solution is the easiest way to implement it if you have a simple form like yours

If you have multiple buttons, or use labels instead of buttons you can do something like this

Private Sub TxtBox1_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)

    If KeyCode = vbKeyReturn Then Me.Hide    'or CommandButton1_Click

End Sub