Filter for Doors with specific FromRoom or ToRoom values

By Saikat Bhattacharya

Is there a way to filter for doors with specific FromRoom or ToRoom values?

The following code snippet shows how we can create a filter for doors in a Revit model which have a specific ToRoom value set to a room name. This code can be modified and extended for specific requirements.

using System;

using System.Collections.Generic;

using System.Text;

using System.Linq;

 

using Autodesk.Revit.Attributes;

using Autodesk.Revit.DB;

using Autodesk.Revit.UI;

 

namespace Revit.SDK.Samples.HelloRevit.CS

{

  [Transaction(TransactionMode.Manual)]

  public class Command : IExternalCommand

  {

    public Result Execute(ExternalCommandData commandData,

      ref string message,

      ElementSet elements)

    {

      Document doc =

        commandData.Application.ActiveUIDocument.Document;

 

      FilteredElementCollector coll =

        new FilteredElementCollector(doc)

        .OfCategory(BuiltInCategory.OST_Doors)

        .OfClass(typeof(FamilyInstance));

 

      IEnumerable<FamilyInstance> doors =

        from FamilyInstance f in coll

        where f.ToRoom.Name == "Room 1"

        select f;

 

      foreach (FamilyInstance door in doors)

      {

        TaskDialog.Show("Door Name", door.Name);

      }

       return Result.Succeeded;

    }

  }        

}

 

While working with doors and rooms using the API, this blog-post might also be relevant to review, while on this topic.