StructuralConnectionHandlerType.AddElementsToCustomConnection Method

Note: This API is now obsolete.

Modifies StructuralConnectionHandlerType of input StructuralConnectionHandler by adding representors of input elements or subelements.

Namespace: Autodesk.Revit.DB.Structure
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0)

Syntax

C#

[ObsoleteAttribute("This method is deprecated in Revit 2026 and may be removed in a later version of Revit. Prefer updateCustomConnectionType instead.")]
public static void AddElementsToCustomConnection(
	StructuralConnectionHandler structuralConnectionHandler,
	IList<Reference> references
)

Parameters

structuralConnectionHandler StructuralConnectionHandler: The existing StructuralConnectionHandler having custom StructuralConnectionHandlerType which is about to be modified.
references IList<Reference>: References to elements or subelements which are to be used to modify custom StructuralConnectionHandlerType by adding their representors.

Exceptions

Exception	Condition
ArgumentException	Input StructuralConnectionHandler must have custom type. -or- All the input Elements should be of the following structural categories: framings, columns, profiles, plates, bolts, anchors, shear studs, welds or structural connections. -or- Total number of different input elements of input StructuralConnectionHandlers must be lower or equal to 3.
ArgumentNullException	A non-optional argument was null

Remarks

Elements or subelements added to a custom connection are deleted and transformed in subelements of the connection. They could be:

FamilyInstance (structural beams and columns).
StructuralConnectionHandler elements associated to the connection.
Specific steel connection elements (bolts, anchors, plates, etc). These connection elements will be of type element but with categories related to structural connections, for example:
- OST_StructConnectionWelds
- OST_StructConnectionHoles
- OST_StructConnectionModifiers
- OST_StructConnectionShearStuds
- OST_StructConnectionBolts
- OST_StructConnectionAnchors
- OST_StructConnectionPlates

You cannot add: elements connected by any connection handler, generic connections, holes and modifiers that are not on the connected elements.

Example

C#

   // Select elements to add to connection.
   IList<Reference> refs = Utilities.Functions.SelectConnectionElementsCustom(activeDoc);

   if (refs.Count() <= 0)
   {
      return Result.Failed;
   }

   // Start transaction
   trans.Start();
   // Adding the elements to the custom connection, using Revit's StructuralConnectionHandlerType class
   StructuralConnectionHandlerType.UpdateCustomConnectionType(conn, refs, []);
   // Commit the transaction
   ts = trans.Commit();

   if (ts != TransactionStatus.Committed)
   {
      message = "Failed to commit the current transaction !";
      trans.RollBack();
      return Result.Failed;
   }              
}