The value of a property for a given component.
Typically, this method is implemented through reflection.
This method automatically calls the pre-change method, System.ComponentModel.Design.IComponentChangeService.OnComponentChanging(object, MemberDescriptor), and post-change method, System.ComponentModel.Design.IComponentChangeService.OnComponentChanged(object, MemberDescriptor, object, object), of the System.ComponentModel.Design.IComponentChangeService.