What are command bars in Dynamics 365?
Microsoft Dynamics 365 displays commands or ribbons in different ways depending on the table and the client. In most places in the web application, you will see a command bar instead of a ribbon. Dynamics 365 for Tablets also uses data defined as ribbons to control what commands are available using a command bar that is optimized for touch.
The command bar provides better performance. The ribbon is still displayed in the web application for certain forms and it is still used for list views in Dynamics 365 for Outlook. Both the command bar and the ribbon use the same underlying XML data to define what commands to display, when the commands are enabled, and what the commands do.
formContext.ui.headerSection.setCommandBarVisible(bool);Sets the command bar visibility. This method is supported only on Unified Interface.
Validate the output in Dynamics 365 –
Once the above code is been configured and deployed, navigate to the Dynamics 365 form and verify whether the command bar’s visibility changes dynamically as shown below.