Allowing Users to Input Undefined String Values into Combo Box Controls
- Updated2026-05-29
- 1 minute(s) read
Allowing Users to Input Undefined String Values into Combo Box Controls
By default, the combo box control allows users to enter string values that are not already in the defined list of strings for the control. You can toggle support for undefined strings in combo boxes.
If you disable support for undefined strings, users of the VI can only select among the defined strings for the combo box control.
Toggle support for undefined entries in a combo box control in the following
ways.
- Interactive: Right-click the combo box control and select Allow Undefined Strings to remove or add the checkmark.
- Programmatic: Use the Allow Undefined Strings property.