Unfortunately such a scenario is not supported natively with the current version of RadControls, as
each PropertyGridField has its label width individually bound to this property. However, we plan to revise this behavior in some of our future releases. The only workaround that comes to my mind is to introduce a property in you view model that keeps track of the current maximum label width and bind LabelColumnWidth to it.
the Telerik team
Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>