Determines whether a specfic RebarButton value exists in this instance.
true if value exists in this instance; otherwise, false.
This method enables you to determine whether a RebarButton is member of the collection before attempting to perform operations on the RebarButton. You can use this method to confirm that a RebarButton has been added to or is still a member of the collection.
RebarBand.RebarButtonCollection Class | Skybound.Rebar Namespace