Get List of all Object ID or Entities added between single transaction
As suggested by @kerry_w_brown , you can use the Database.Handseed property to find all the newly created entities from the start of a Transaction.
// instantiate a new collection for newly created entities
var newEntitiesIds = new ObjectIdCollection();
// Initialize the first available Handle
long handseed = db.Handseed.Value;
using (var tr = db.TransactionManager.StartTransaction())
{
// Create some entities
// ...
}
// Get the created entities
var entityClass = RXObject.GetClass(typeof(Entity));
for (long i = handseed; i < db.Handseed.Value; i++)
{
if (db.TryGetObjectId(new Handle(i), out ObjectId id)
&& id.ObjectClass.IsDerivedFrom(entityClass))
newEntitiesIds.Add(id);
}
But it will be much more efficient to simply add these entites (or the ObjectIds) to a list while creating them.
Here's an example with a local function.
// instantiate a new collection for newly created entities
var newEntitiesIds = new ObjectIdCollection();
using (var tr = db.TransactionManager.StartTransaction())
{
var modelSpace = (BlockTableRecord)tr.GetObject(
SymbolUtilityServices.GetBlockModelSpaceId(db), OpenMode.ForWrite);
// local function to add entites to the model space and the newEntitiesIds collection
void Add(Entity ent)
{
newEntitiesIds.Add(modelSpace.AppendEntity(ent));
tr.AddNewlyCreatedDBObject(ent, true);
}
// Create some entities
var entity = new Circle(Point3d.Origin, Vector3d.ZAxis, 10.0);
Add(entity);
// ...
tr.Commit();
}
@ActivistInvestor a écrit :
But, a constant point of frustration for me, is that I routinely see others hand the OP a fish, rather than endeavoring to help them learn how to catch fish. This thread may be another case in point.
I'm sorry, I'd also rather try to teach others to fish than give them a fish, but English isn't my first language and it's often easier for me to give a code snippet.
I'd be curious to see how you do it with an ObjectOverrule.
