GetObject() without specify type entity.

[joantopo]

I have this to zoom object:

  public static void ZoomObject(Autodesk.AutoCAD.DatabaseServices.ObjectId Id)
        {

            Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;  // por si queremos preguntar o responder en la línea de comandos
            Database db = Application.DocumentManager.MdiActiveDocument.Database;

            // start transaction
            using (Transaction trans = db.TransactionManager.StartTransaction())
            {
                // get the entity' extends
                Autodesk.Civil.DatabaseServices.SectionView ent= trans.GetObject(Id,OpenMode.ForRead) as SectionView;
                Extents3d extends = ent.GeometricExtents;
                // configure the new current view

                ZoomToWindow(new Autodesk.AutoCAD.Geometry.Point2d(extends.MinPoint.X, extends.MinPoint.Y), new Autodesk.AutoCAD.Geometry.Point2d(extends.MaxPoint.X, extends.MaxPoint.Y));
                trans.Commit();
            }
        }

 this method receive one parameter -->ObjectId.

Have I do this for each type of entity (civil 3d object)?

    Autodesk.Civil.DatabaseServices.SectionView ent= trans.GetObject(Id,OpenMode.ForRead) as SectionView;

    Autodesk.Civil.DatabaseServices.Profile ent= trans.GetObject(Id,OpenMode.ForRead) as Profile;

 I was trying to do this:

   Autodesk.Civil.DatabaseServices.Entity ent= trans.GetObject(Id,OpenMode.ForRead) 
                Extents3d extends = ent.GeometricExtents;

 But this last doesn´t work.

I don´t like that I have to check every object to determine which type is Id parameter.

[Jeff_M]

---

@joantopo wrote:

 I was trying to do this:

   Autodesk.Civil.DatabaseServices.Entity ent= trans.GetObject(Id,OpenMode.ForRead) 
                Extents3d extends = ent.GeometricExtents;

 But this last doesn´t work.

---

 Have you tried the base AutoCAD Entity object?

 Autodesk.AutoCAD.DatabaseServices.Entity ent= trans.GetObject(Id,OpenMode.ForRead) 
                Extents3d extends = ent.GeometricExtents;

[Jeff_M · Accepted solution]

Joan, casting the id.GetObject() as the base AutoCAD Entity type worked for me in a quick test.

[joantopo]

 Hi again.

Is there a fast way to find out what civil object is from an objectId?

For example, if we ask to the user by prompt (command line):

"select in the drawing an alignment or profile view".

How can we know what object was selected by the user?

Thanks.

[norman.yuan · Accepted solution]

Maybe this:

[CivilCustomEntity].ObjectId.ObjectClass.DxfName?

[joantopo]

Yes, or this:

if (entRes.GetType() == typeof(Autodesk.Civil.DatabaseServices.Alignment)) 
{
}

Thanks.