RevitAPI之怎样在族、族类型、族实例之间相互获取

从族实例获取族类型	①   FamilySymbol symbol = familylnstance. Symbol ②  FamilySymbol symbol = RevitDoc. GetElement(familyInstance.GetTypeId()) as FamilySymbol；
从族类型获取族	Family family = symbol. Family；
从族获取族类型	FamilySymbolSet setOfSymbols = family. Symbols; (返回值是一个族下所有族类型的集合）
从族类型获取族实例	①  FamilylnstanceFilter familylnstanceFilter = new FamilyInstanceFilter(RevitDoc,symbol, Id)； ②  FilteredElementCollector filteredElements = new FilteredElementCollector(RevitDoc)； filteredElements = filteredElements. WherePasses(familylnstanceFilter); foreach (Familylnstance element in filteredElements) { //各族实例 }

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