UpDown. Up Button Method
Increments the value of the spin box (also known as an up-down control).
public: override void UpButton();
public override void UpButton ();
override this.UpButton : unit -> unit
Public Overrides Sub UpButton ()
When the UpButton method is called, either in code or by the click of the up button, the new value is validated and the control is updated with the new value in the appropriate format. Specifically, if UserEdit is set to
true, ParseEditText is called prior to validating or updating the value. The value is then validated to be between the Minimum and Maximum values and the UpdateEditText method is called.