While working on a perspective table component's property editor I accidentally deleted the "rows" property. How do I get it back in the property editor?
if it is too late to [Ctrl]-Z to back up the mistake. Then you'll have to rebuild the object. Add a second one and move any links, property modifications, etc. then delete the old and rename the new.
Or copy the property from the new one, paste it to the old one, then delete the new one.
You'll obviously have to reconfigure that property.
Perspective components have a backing schema of required properties. These are the properties you see in the Designer. If you delete a required property, the system will remake the property the next time the resource is loaded. In your case, closing the View resource and then re-opening it should have resulted in the rows property having been replaced.