![word developer combo box drop down list word developer combo box drop down list](https://thegeekpage.com/wp-content/uploads/2015/11/drop-down-list-content-control.png)
In this example, users can click "To" to help them select valid values.
![word developer combo box drop down list word developer combo box drop down list](https://www.codeproject.com/KB/combobox/ComboBoxFiringEvents/Screenshot.png)
With a standard drop-down list, users are limited to choices in the list, but with a combo box they can enter a choice that isn't in the list. Users can choose one and only one option.
![word developer combo box drop down list word developer combo box drop down list](https://d13ot9o61jdzpp.cloudfront.net/images/combo_box_1.png)
With a drop-down list or combo box, users make a choice among a list of mutually exclusive values.
#Word developer combo box drop down list windows
Designing with Windows Presentation Foundation.Windows User Experience Design Principles.Windows User Experience Interaction Guidelines.