.NET

[#1]

How do you read geometric constraints from the Assoc2dConstraintGroup in C# or VB?

[#2 · Accepted solution]

Hi There,

Here is a c# sample that illustrates how to get started:

[CommandMethod("DumpConstraints")]
public void DumpConstraints()
{
    Document doc = Application.DocumentManager.MdiActiveDocument;
    Database db = doc.Database;
    Editor ed = doc.Editor;

    ObjectId networkId = AssocNetwork.GetInstanceFromObject(
        db.CurrentSpaceId, 
        false, 
        true, 
        "ACAD_ASSOCNETWORK");

    if (networkId == ObjectId.Null)
        return;

    using (Transaction Tx = 
        db.TransactionManager.StartTransaction())
    {
        using (AssocNetwork network = 
            Tx.GetObject(
                networkId, 
                OpenMode.ForRead, false) as AssocNetwork)
        {
            foreach (ObjectId actionId in network.GetActions)
            {
                if (actionId == ObjectId.Null)
                    continue;

                DBObject obj = Tx.GetObject(
                    actionId, 
                    OpenMode.ForRead);

                //ed.WriteMessage("\n - Action: " + obj.ToString().Remove(0, 34));

                if (actionId.ObjectClass.IsDerivedFrom(
                    RXObject.GetClass(
                        typeof(Assoc2dConstraintGroup))))
                {
                    Assoc2dConstraintGroup group = obj 
                        as Assoc2dConstraintGroup;

                    foreach(GeometricalConstraint constraint 
                        in group.Constraints)
                    {
                        //... do something ...
                    }
                }
            }
        }
    }
}

Regards,

Philippe.

[#3]

I can't thank you enough for helping me. I had given up and was working on an alternate/not so elegant solution. Thank you SO very much!