Revit二次开发之“显示或隐藏视图中未选中的元素”

方法是先隐藏全部元素，再显示选中的。

转自：http://revit.5d6d.com/thread-1094-1-1.html
//显示或隐藏视图中未选中的元素
[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
//[Journaling(JournalingMode.NoCommandData)]
public class HideUnHideUnSelectInView : IExternalCommand
{
public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
UIDocument uiDoc = commandData.Application.ActiveUIDocument;
Selection selection = uiDoc.Selection;
Autodesk.Revit.DB.View view = uiDoc.Document.ActiveView;

Transaction ts = new Transaction(uiDoc.Document, "HideUnHide");
ts.Start();

//先把所有可隐藏的元素隐藏，再把选中的元素显示
ElementSet elementSet = new ElementSet();
//遍历风管
FilteredElementCollector collectorDuct = new FilteredElementCollector(uiDoc.Document);
collectorDuct.OfClass(typeof(Duct)).OfCategory(BuiltInCategory.OST_DuctCurves);//风管，直接用类名
foreach (Element el in collectorDuct)
{
if (el.CanBeHidden(view) == true)
{
elementSet.Insert(el);
}
}
//遍历墙
FilteredElementCollector collectorWall = new FilteredElementCollector(uiDoc.Document);
collectorWall.OfClass(typeof(Wall)).OfCategory(BuiltInCategory.OST_Walls);//墙，直接用类名
foreach (Element el in collectorWall)
{
if (el.CanBeHidden(view) == true)
{
elementSet.Insert(el);
}
}
//遍历窗
FilteredElementCollector collectorWindow = new FilteredElementCollector(uiDoc.Document);
collectorWindow.OfClass(typeof(FamilyInstance)).OfCategory(BuiltInCategory.OST_Windows);//窗，类型是FamilyInstance
foreach (Element el in collectorWindow)
{
if (el.CanBeHidden(view) == true)
{
elementSet.Insert(el);
}
}
//遍历门
FilteredElementCollector collectorDoor = new FilteredElementCollector(uiDoc.Document);
collectorDoor.OfClass(typeof(FamilyInstance)).OfCategory(BuiltInCategory.OST_Doors);//门，类型是FamilyInstance
foreach (Element el in collectorDoor)
{
if (el.CanBeHidden(view) == true)
{
elementSet.Insert(el);
}
}
view.Hide(elementSet);

//判断在此视图下是否可以隐藏
foreach (Element el in selection.Elements)
{
if (el.CanBeHidden(view) == true)
{
elementSet.Clear();
elementSet.Insert(el);
view.Unhide(elementSet);
}
}

ts.Commit();
return Result.Succeeded;
}
}

//显示全部元素
[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
//[Journaling(JournalingMode.NoCommandData)]
public class ShowAllInView : IExternalCommand
{
public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
UIDocument uiDoc = commandData.Application.ActiveUIDocument;
Selection selection = uiDoc.Selection;
Autodesk.Revit.DB.View view = uiDoc.Document.ActiveView;

Transaction ts = new Transaction(uiDoc.Document, "HideUnHide");
ts.Start();

//先把所有可隐藏的元素隐藏，再把选中的元素显示
ElementSet elementSet = new ElementSet();
//遍历风管
FilteredElementCollector collectorDuct = new FilteredElementCollector(uiDoc.Document);
collectorDuct.OfClass(typeof(Duct)).OfCategory(BuiltInCategory.OST_DuctCurves);//风管，直接用类名
foreach (Element el in collectorDuct)
{
if (el.CanBeHidden(view) == true)
{
elementSet.Insert(el);
}
}
//遍历墙
FilteredElementCollector collectorWall = new FilteredElementCollector(uiDoc.Document);
collectorWall.OfClass(typeof(Wall)).OfCategory(BuiltInCategory.OST_Walls);//墙，直接用类名
foreach (Element el in collectorWall)
{
if (el.CanBeHidden(view) == true)
{
elementSet.Insert(el);
}
}
//遍历窗
FilteredElementCollector collectorWindow = new FilteredElementCollector(uiDoc.Document);
collectorWindow.OfClass(typeof(FamilyInstance)).OfCategory(BuiltInCategory.OST_Windows);//窗，类型是FamilyInstance
foreach (Element el in collectorWindow)
{
if (el.CanBeHidden(view) == true)
{
elementSet.Insert(el);
}
}
//遍历门
FilteredElementCollector collectorDoor = new FilteredElementCollector(uiDoc.Document);
collectorDoor.OfClass(typeof(FamilyInstance)).OfCategory(BuiltInCategory.OST_Doors);//门，类型是FamilyInstance
foreach (Element el in collectorDoor)
{
if (el.CanBeHidden(view) == true)
{
elementSet.Insert(el);
}
}
view.Unhide(elementSet);

ts.Commit();
return Result.Succeeded;
}
}end