topic Re: How to check if entity is part of "Working Set"? in .NET Forum

How to check if entity is part of "Working Set"?

Anonymous — Sat, 05 Aug 2017 00:55:43 GMT

Hi,

I am trying to determine if an entity is part of the "Working Set". In other words, belongs to a Block or Xref that is currently being edited in-place.

Does the API have ability to check this?

Thanks,

Jon

Re: How to check if entity is part of "Working Set"?

ActivistInvestor — Sat, 05 Aug 2017 01:32:39 GMT

@Anonymous wrote:
Hi,

I am trying to determine if an entity is part of the "Working Set". In other words, belongs to a Block or Xref that is currently being edited in-place.

Does the API have ability to check this?

Thanks,

Jon

I think you're looking for the WorkSetHas() method of the LongTransaction class.

You get an instance of that class from the LongTransactionManager's CurrentLongTransactionFor() method.

Re: How to check if entity is part of "Working Set"?

Anonymous — Sat, 05 Aug 2017 02:11:30 GMT

This does look like what I need, but having trouble trying to reference it. I am obviously missing something here....

Re: How to check if entity is part of "Working Set"?

ActivistInvestor — Sat, 05 Aug 2017 08:10:26 GMT

@Anonymous wrote:
This does look like what I need, but having trouble trying to reference it. I am obviously missing something here....

OR

Here's an extension method for the Document class, that tells if the entity with the given ObjectId is in the working set:

namespace Autodesk.AutoCAD.ApplicationServices
{
   public static class MyDocumentExtensions
   {
      public static bool WorkSetHas(this Document doc, ObjectId id, bool includingErased = true)
      {
         ObjectId id = Application.LongTransactionManager.CurrentLongTransactionFor(doc);
         if(!id.IsNull)
         {
            using(var trans = new ReadOnlyTransaction())
            {
               LongTransaction ltr = (LongTransaction) trans.GetObject(id, OpenMode.ForRead);
               return ltr.WorkSetHas(entityId, includingErased);
            }
         }
         return false;
      }
   }
}

namespace Autodesk.AutoCAD.DatabaseServices
{
   public class ReadOnlyTransaction : OpenCloseTransaction
   {
      protected override void DeleteUnmanagedObject()
      {
         Commit();
         base.DeleteUnmanagedObject();
      }

      public override void Abort()
      {
         Commit();
      }
   }
}

Re: How to check if entity is part of "Working Set"?

Anonymous — Sat, 05 Aug 2017 08:56:20 GMT

Thanks, that helped!

I was missing Application before LongTransactionManager

Dim oid As ObjectId = Autodesk.AutoCAD.ApplicationServices.Application.LongTransactionManager.CurrentLongTransactionFor(DocumentManager.MdiActiveDocument)

Re: How to check if entity is part of "Working Set"?

ActivistInvestor — Sat, 05 Aug 2017 13:37:09 GMT

Whoops.

I wrote that one quickly and without testing it.

In case anyone is interested, here is a working version:

namespace Autodesk.AutoCAD.ApplicationServices
{
   public static class MyDocumentExtensions
   {
      public static bool WorkSetHas(this Document doc, ObjectId entityId, bool includingErased = true)
      {
         // Assert.IsNotNull(doc, "doc");
         ObjectId id = Application.LongTransactionManager.CurrentLongTransactionFor(doc);
         if(!id.IsNull)
         {
            using(var trans = new ReadOnlyTransaction())
            {
               LongTransaction ltr = (LongTransaction) trans.GetObject(id, OpenMode.ForRead);
               return ltr.WorkSetHas(entityId, includingErased);
            }
         }
         return false;
      }
   }
}

namespace Autodesk.AutoCAD.DatabaseServices
{
   public class ReadOnlyTransaction : OpenCloseTransaction
   {
      protected override void DeleteUnmanagedObject()
      {
         Commit();
         base.DeleteUnmanagedObject();
      }

      public override void Abort()
      {
         Commit();
      }
   }
}