【Revit API】FamilyInstance、FamilySymbol、Family的寻找关系

话不多说，做个笔记

FamilyInstance instance;
var typeid = instance.GetTypeId();
var symbol = RevitDoc.GetElement(typeid) as FamilySymbol;
var familyName = symbol.FamilyName; 

var defaultFamilySymbolID = family.GetFamilySymbolIds().ToList()[familySymbolIndex];
var symbol =  doc.GetElement(defaultFamilySymbolID) as FamilySymbol;
if (!symbol.IsActive)
{
    symbol.Activate();
}