AssemblyInstance.Create

Public Class

Creates a new assembly instance.

Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Syntax

public static AssemblyInstance Create(
  Document document,
  ICollection<ElementId> assemblyMemberIds,
  ElementId namingCategoryId
)

Parameters

document Document

The document containing the elements.

assemblyMemberIdsICollection. ElementId.

The elements that comprise the assembly.

namingCategoryId ElementId

The naming category for the assembly instance.

Return Value

AssemblyInstance
The newly created assembly instance.

Exceptions

Exception

Condition

ArgumentException

One or more element ids was not permitted for membership in the assembly instance. Elements should be of a valid category and should not be a member of an existing assembly. -or- This naming category was not valid for an assembly instance containing the proposed members. The naming category should match one of the member element categories.

ArgumentNullException

A non-optional argument was null

InvalidOperationException

The document is in failure mode: an operation has failed, and Revit requires the user to either cancel the operation or fix the problem (usually by deleting certain elements).

ModificationForbiddenException

The document is in failure mode: an operation has failed, and Revit requires the user to either cancel the operation or fix the problem (usually by deleting certain elements). -or- The document is being loaded, or is in the midst of another sensitive process.

ModificationOutsideTransactionException

The document has no open transaction.

Remarks

Transaction must be committed after calling this method before performing any action on the newly created instance. Assembly type is assigned after the transaction for creating assembly instance is complete.