You can use the TripleState property to specify how a check box, toggle button, or option button will display Null values. Read/write Boolean.
expression.TripleState
expression Required. An expression that returns one of the objects in the Applies To list.
The TripleState property uses the following settings.
Setting | Visual Basic | Description |
---|---|---|
Yes | True | The control will cycle through states for Yes, No, and Null values. The control appears dimmed (grayed) when its Value property is set to Null. |
No | False | (Default) The control will cycle through states for Yes and No values. Null values display as if they were No values. |
This property can be set in any view.