public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
try
{
UIDocument uidoc = commandData.Application.ActiveUIDocument;
ElementId foundId = null;
//是否存在族
Boolean found = FilterTools.existFamliyByName(uidoc.Document, GlobalSettings.FamilyName.沉降测点.ToString(), out foundId);
Family family = null;
if (found == true)
{
//如果存在，获得文件该族
family = uidoc.Document.GetElement(foundId) as Family;
}
else
{
//如果不存在，载入族
Transaction trans = new Transaction(uidoc.Document, "trans");
trans.Start();
uidoc.Document.LoadFamily(Path.Combine(GlobalSettings.Path_family, GlobalSettings.FamilyName.沉降测点.ToString() + ".rfa"), out family);
trans.Commit();
}
//获得该族的族类型，并且放置族实例
FamilySymbol symbol = uidoc.Document.GetElement(family.GetFamilySymbolIds().ElementAt(0)) as FamilySymbol;
uidoc.PostRequestForElementTypePlacement(symbol);
}
catch (Exception e)
{
message = e.Message;
return(Autodesk.Revit.UI.Result.Failed);
}
return(Result.Succeeded);
}