Revit 2025 API
Compound |
Merges the two regions which share the specified segment.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax
public int MergeRegionsAdjacentToSegment( int segmentId, int layerIdxForMergedRegion )
Public Function MergeRegionsAdjacentToSegment ( segmentId As Integer, layerIdxForMergedRegion As Integer ) As Integer
public: int MergeRegionsAdjacentToSegment( int segmentId, int layerIdxForMergedRegion )
member MergeRegionsAdjacentToSegment : segmentId : int * layerIdxForMergedRegion : int -> int
Parameters
- segmentId Int32
- The id of a segment in the underlying grid.
- layerIdxForMergedRegion Int32
- The index of the layer to which the resulting region will be associated.
Return Value
Int32The id of the resulting region. If -1 is returned, then the operation would have produced an invalid region and was not performed.

Exception | Condition |
---|---|
ArgumentOutOfRangeException | The layer index is out of range. |
InvalidOperationException | Split and merge regions operations can be used only for vertically compound structures without variable thickness layers. -or- The segment is not shared by adjacent regions. |
See Also