revit二次开发之选择过滤器

获取当前视图中，一楼所有的窗

namespace RevitStudy  
{  
// 获取一层的所有窗户  
[Transaction(TransactionMode.Manual)]  
[Regeneration(RegenerationOption.Manual)]  
public class GetAllWindowsOnLevelOne : IExternalCommand  
{  
public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)  
{  
UIApplication uiApp = commandData.Application;  
Autodesk.Revit.ApplicationServices.Application app = uiApp.Application;  
UIDocument uiDoc = uiApp.ActiveUIDocument;  
Document doc = uiDoc.Document;  //构建一层的选择集  
FilteredElementCollector collectorLevel = new FilteredElementCollector(doc);  
ICollection<Element> levels = collectorLevel.OfClass(typeof(Level)).ToElements();  
var query = from element in collectorLevel where element.Name == "标高 1" select element;// Linq query  
List<Element> level1 = query.ToList<Element>();  
if(level1.Count < 1)  
{  
MessageBox.Show("<标高 1>不存在!");  
return Result.Failed;  
}  
ElementId levelId = level1[0].Id;  
ElementLevelFilter level1Filter = new ElementLevelFilter(levelId);  //构建窗户的选择集  
ElementClassFilter classFilter = new ElementClassFilter(typeof(FamilyInstance));  
ElementCategoryFilter catFilter = new ElementCategoryFilter(BuiltInCategory.OST_Windows);  
LogicalAndFilter windowFilter = new LogicalAndFilter(classFilter, catFilter);  // 合并选择集  
LogicalAndFilter logicalFilter = new LogicalAndFilter(windowFilter, level1Filter);  FilteredElementCollector collectorWindow = new FilteredElementCollector(doc);  
collectorWindow.WherePasses(logicalFilter);  IList<Element> listElemWindow = collectorWindow.ToElements();  string strMessage = string.Format("建筑一层共有{0}个窗户!", listElemWindow.Count);  MessageBox.Show(strMessage);  return Result.Succeeded;  
}  
}  
}  

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