| Control | Description | 
|  | 
| CheckBox | An integer value indicating whether the item is selected: | 
|  | Null   Indicates the item is in a null state, neither selected nor cleared. | 
|  | –1   True. Indicates the item is selected. | 
|  | 0   False. Indicates the item is cleared. | 
| OptionButton | Same as CheckBox. | 
| ToggleButton | Same as CheckBox. | 
| ScrollBar | An integer between the values specified for the Max and Min properties. | 
| SpinButton | Same as ScrollBar. | 
| ComboBox, ListBox | The value in the BoundColumn of the currently selected rows. | 
| CommandButton | Always False. | 
| MultiPage | An integer indicating the currently active page. | 
|  | Zero (0) indicates the first page. The maximum value is one less than the number of pages. | 
| TextBox | The text in the edit region. |