Skip to main content Skip to in-page navigation Skip to Ask Learn chat experience

This browser is no longer supported.

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

Download Microsoft Edge More info about Internet Explorer and Microsoft Edge

Read in English Edit

Note

Access to this page requires authorization. You can try signing in or changing directories.

Access to this page requires authorization. You can try changing directories.

UnknownProperty type

Package:: botbuilder-dialogs-adaptive

type UnknownProperty = unknown | ValueExpression

In this article

en-us

Your Privacy Choices

AI Disclaimer
Previous Versions
Blog
Contribute
Privacy
Consumer Health Privacy
Terms of Use
Trademarks
© Microsoft 2026