之前群里有朋友问怎么过滤特定标高的元素，当时有人回答先都过滤出来，然后遍历判断相应的标高参数来找出特定标高的元素。今天在看书的时候看到了一个可以过滤特定标高元素的方法，在此记录一下。 这个demo实现了亮显标高 1中所有元素的效果。
using System; using System.Collections.Generic; using Autodesk.Revit.UI; using Autodesk.Revit.DB; using Autodesk.Revit.Attributes; using Autodesk.Revit.UI.Selection; using Autodesk.Revit.DB.Mechanical; using Autodesk.Revit.DB.Plumbing; using Autodesk.Revit.DB.Electrical; using System.Threading; using System.Linq; using System.Runtime.InteropServices; namespace 插件 { [Autodesk.Revit.Attributes.Transaction(TransactionMode.Manual)] [Autodesk.Revit.Attributes.Regeneration(RegenerationOption.Manual)] [Autodesk.Revit.Attributes.Journaling(JournalingMode.UsingCommandData)] public class Command : IExternalCommand { public readonly double unit = 304.8; public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elementSet) { UIApplication uiapp = new UIApplication(commandData.Application.Application); UIDocument uidoc = commandData.Application.ActiveUIDocument; Document doc = uidoc.Document; Selection selection = uidoc.Selection; Level level = new FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_Levels).OfClass(typeof(Level)).WhereElementIsNotElementType().ToElements().Where(m => m.Name == "标高 1").ToList().FirstOrDefault() as Level; // 创建一个标高过滤器 ElementLevelFilter levelFilter = new ElementLevelFilter(level.Id); FilteredElementCollector coll = new FilteredElementCollector(doc); ICollection<ElementId> ids = coll.WhereElementIsNotElementType().WherePasses(levelFilter).ToElementIds(); selection.SetElementIds(ids); return Result.Succeeded; } } } 参考——API开发指南 宦国胜 主编