It depends upon what properties we are talking about. For example, many properties such as Visible, Enabled, Appearance related properties such as CssClass, BackColor etc are backed by view-state and will not be retained over post-back if you disable the view-state.
Text property (value within text-box) is a different case - this property will be backed by both post data and view-state. So even if view-state is disabled, you will see the value being retained because its get read via POST data (Request.Form collection). But you will notice the difference if you mark the text box read-only or marked its visibility false. In both these cases, the text value will be retrieved from view-state and disabling it will result in loss of value over a post-back.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…