private void Window_Loaded(object sender, RoutedEventArgs e)
{
//Lists to store the ElementId of Views placed on sheets
List <ElementId> LegendsPlacedIds = new List <ElementId>();
List <ElementId> SchedulesPlacedIds = new List <ElementId>();
List <ElementId> ViewTemplatesUsedIds = new List <ElementId>();
List <View> RootViews = new List <View>();
try
{
//Get all sheets using a Filtered Element Collector
foreach (ViewSheet sheet in new FilteredElementCollector(doc).OfClass(typeof(ViewSheet)))
{
//Get each view on each sheet and store them in the applicable list
foreach (ElementId elementId in sheet.GetAllPlacedViews())
{
//Cast the Element to a View
View v = doc.GetElement(elementId) as View;
if (v.ViewType == ViewType.Legend)
{
//For items like Legends and Schedules, we just need one instance so check if the list already
//contains the Element Id
if (!LegendsPlacedIds.Contains(elementId))
{
//If the Legend container List doesn't already contain the Element Id, add it
LegendsPlacedIds.Add(elementId);
}
}
}
}
//Collect all instances of schedules placed on a sheet
foreach (ScheduleSheetInstance scheduleInstance in new FilteredElementCollector(doc).OfClass(typeof(ScheduleSheetInstance)).ToElements())
{
//Check to see if the container list already has the Schedule Id
//Note that you need to get the ScheduleId from the Schedule Instance
if (!SchedulesPlacedIds.Contains(scheduleInstance.ScheduleId))
{
//If the Schedule isn't in the list, add the Element Id for it to the palced List
SchedulesPlacedIds.Add(scheduleInstance.ScheduleId);
}
}
//Collect all Views in the Document and store them in an IList so we can iterate them multiple times
IList <Element> AllDocumentViews = Helpers.Collectors.ByCategory(doc, BuiltInCategory.OST_Views);
//Iterate All views to check certain criteria of each view
foreach (View view in AllDocumentViews)
{
//Check to make sure the view is Not a View Template
if (!view.IsTemplate)
{
//Check to see if the view has a ViewTemplate applied
if (view.ViewTemplateId != ElementId.InvalidElementId)
{
//Check to see if the View Template placed list already has the Element Id
if (!ViewTemplatesUsedIds.Contains(view.ViewTemplateId))
{
//if it does have a view template, add it to the list
ViewTemplatesUsedIds.Add(view.ViewTemplateId);
}
}
//Check to make sure the view is not a Legend
if (view.ViewType != ViewType.Legend)
{
//Check to see if the View has a viewport Sheet name or Number parameter
if (string.IsNullOrEmpty(view.get_Parameter(BuiltInParameter.VIEWPORT_SHEET_NAME).AsString()) || string.IsNullOrEmpty(view.get_Parameter(BuiltInParameter.VIEWPORT_SHEET_NUMBER).AsString()))
{
//Need to make sure this view isn't a parent view with dependents. Often the dependent views are placed, but if you delete
//the parent, the dependents are removed as well
if (view.GetDependentViewIds().Count == 0)
{
//Add the view to the Master Container with the Custom ElementIdName class
Views.Add(new ElementIdName()
{
Check = false, Name = view.Name, ElemId = view.Id
});
}
else
{
//Store all views that have dependents to check and see if they too can be deleted
RootViews.Add(view);
}
}
}
else
{
//If it is a legend, check to see if it is placed
if (!LegendsPlacedIds.Contains(view.Id))
{
//Add it to the list if not place
Legends.Add(new ElementIdName()
{
Check = false, Name = view.Name, ElemId = view.Id
});
}
}
}
}
//We have to iterate the views again after we have caught all the applied View templates above
//to make sure we know which are not being used
foreach (View view in AllDocumentViews)
{
//Make sure we only get View Templates
if (view.IsTemplate)
{
//If it is a view template, check to see if it is in the Placed list
if (!ViewTemplatesUsedIds.Contains(view.Id))
{
//If not, add it to the master container with the Custom ElementIdName class
ViewTemplates.Add(new ElementIdName()
{
Check = false, Name = view.Name, ElemId = view.Id
});
}
}
}
//Iterate through all Root views that had dependents
foreach (View RootView in RootViews)
{
//Use a bool to be the switch if any dependent is placed
bool placed = false;
//Iterate each ViewId of each dependent
foreach (ElementId viewId in RootView.GetDependentViewIds())
{
//Use the Element Id to get the view associated
View view = doc.GetElement(viewId) as View;
//Check to see if the View has a viewport Sheet name or Number parameter
if (!string.IsNullOrEmpty(view.get_Parameter(BuiltInParameter.VIEWPORT_SHEET_NAME).AsString()) || !string.IsNullOrEmpty(view.get_Parameter(BuiltInParameter.VIEWPORT_SHEET_NUMBER).AsString()))
{
//If ANY of the views along the way have this information, we don't want to delete the Root view
//so make the bool true
placed = true;
}
}
//Check the bool variable and add the Root view only if none of the dependents were placed
if (!placed)
{
//Add the view to the Master Container with the Custom ElementIdName class
Views.Add(new ElementIdName()
{
Check = false, Name = RootView.Name, ElemId = RootView.Id
});
}
}
//Collect all Schedules in the project
IList <Element> AllSchedules = new FilteredElementCollector(doc).OfClass(typeof(ViewSchedule)).ToElements();
foreach (ViewSchedule Schedule in AllSchedules)
{
//check to make sure it is not a View Template schedule
if (!Schedule.IsTemplate)
{
//Check to see if the view has a ViewTemplate applied
if (Schedule.ViewTemplateId != ElementId.InvalidElementId)
{
//Check to see if the View Template placed list already has the Element Id
if (!ViewTemplatesUsedIds.Contains(Schedule.ViewTemplateId))
{
//if it does have a view template, add it to the list
ViewTemplatesUsedIds.Add(Schedule.ViewTemplateId);
}
}
//Make sure it is not a built in Title Block Revision Schedule becasue these can't be deleted
if (!Schedule.IsTitleblockRevisionSchedule)
{
//Check to see if the Placed list contains the schedule
if (!SchedulesPlacedIds.Contains(Schedule.Id))
{
//If not, add it to the master container with the Custom ElementIdName class
Schedules.Add(new ElementIdName()
{
Check = false, Name = Schedule.Name, ElemId = Schedule.Id
});
}
}
}
}
//We have to iterate the views again after we have caught all the applied View templates above
//to make sure we know which are not being used
foreach (ViewSchedule Schedule in AllSchedules)
{
//Make sure we only get View Templates
if (Schedule.IsTemplate && !Schedule.IsTitleblockRevisionSchedule)
{
//If it is a view template, check to see if it is in the Placed list
if (!ViewTemplatesUsedIds.Contains(Schedule.Id))
{
//If not, add it to the master container with the Custom ElementIdName class
ViewTemplates.Add(new ElementIdName()
{
Check = false, Name = Schedule.Name, ElemId = Schedule.Id
});
}
}
}
//Set the Tab header text to include the number of items. just a visual touch, doesnt do anything
TabViewTemplates.Header = "View Templates (" + ViewTemplates.Count + ")";
TabViews.Header = "Views (" + Views.Count + ")";
TabLegends.Header = "Legends (" + Legends.Count + ")";
TabSchedules.Header = "Schedules (" + Schedules.Count + ")";
//Set the Item source for the 4 different list views to the Master Containers
ListViewViews.ItemsSource = Views;
ListViewViewTemplates.ItemsSource = ViewTemplates;
ListViewSchedules.ItemsSource = Schedules;
ListViewLegends.ItemsSource = Legends;
//Use a collection view on the item source of the list view to sort the items
CollectionView ViewsSort = (CollectionView)CollectionViewSource.GetDefaultView(ListViewViews.ItemsSource);
//We are using the "Name" column / property to sort in this case
ViewsSort.SortDescriptions.Add(new SortDescription("Name", ListSortDirection.Ascending));
}
//Catch any exceptions thrown and provide the user with the information
catch (Exception ex)
{
TaskDialog.Show("View Checking Error", ex.ToString());
}
}