reload the form with a button in access forms

I have an access form (edit only form). It has an OnLoad event that will show only a combobox for the user to choose from, which then by an AfterUpdate event will show some controls in the form, through visible and enable properties of the controls. Then the user can click a button to save the dirty record by this code:

    If Me.Dirty Then
          Me.Dirty = False
    End If

Till here everything is ok.

What I need is with the same button click event, the form to reload to its original status, i.e. to reload the form as if it is closed and re-opened like the previous OnLoad event to show only my combobox

I tried the requery and refresh methods, but that does not bring me back to the OnLoad event shape.

Try to abstract your code by putting logic into a separate sub.

Instead of

Sub MyCombo_AfterUpdate()
    Me!foo.Visible = True
    Me!bar.Enabled = True
    ' etc.
End Sub

create a sub for this:

Sub ShowEditControls(bShow As Boolean)
    Me!foo.Visible = bShow 
    Me!bar.Enabled = bShow 
    ' etc.
End Sub

and then simply

Sub MyCombo_AfterUpdate()
    ShowEditControls True
End Sub

and

Sub btSave_Click()
    If Me.Dirty Then
          Me.Dirty = False
    End If

    Me!MyCombo.SetFocus
    Me!MyCombo.Value = Null   ' or whatever initial value you need

    ShowEditControls False
End Sub