get the 'representation' id - the id that AutoCAD understands as being the object drawn on the screenĪSObjectId reprId = DatabaseManager.GetReprId(beam) Private int ExplodeBeam(StraightBeam beam) The Advance Steel API has methods to go from one type of id to the other. Whenever object ids are obtained by calling methods, Advance Steel methods always return ids of the 'internal' objects, while AutoCAD API calls always return ids of the 'representation' objects. Whenever you want AutoCAD to act on an object you need to use the 'representation' id, while in the cases when you want the AdvanceSteel API to act on the same object the 'internal' id must be used. In order to successfully work with Advance Steel and AutoCAD API it is necessary to understand which entity is required. That is, when a user selects a beam inside Advance Seel they select the representation of the beam. Normally an Advance Steel user can only interface with the 'representation' entity. Advance Steel objects are, in general, composed of two AutoCAD entities: the 'internal' entity and the 'representation' entity. This is due to a duality of Advance Steel entities. In the sample code above, note that after getting the, it is converted to a .ObjectId before checking to see if it is a StraightBeam. The other using alias directives will be used later in the tutorial. With the new using statements, we can replace '.startTransaction() ' with 'ASTransactionManager.startTransaction() ' as seen above. For this tutorial, we will use three using alias directives as shown in the rewritten code below. Rather than including the namespace in front of the class name, we can use a 'using alias directive' at the top of the file to create a shorter name for one of the classes. This requires disambiguation in the code. The AutoCAD API has several class names in common with Advance Steel, such as TransactionManager as seen above. Note that this tutorial will require 4 using statements for AutoCAD API namespaces. Ī.startTransaction() Ī.endTransaction() Code Region: WorkingWithAutoCADAPI command class

Autocad advance steel tutorial