Retrieves the element ids of the source elements of a merged part. 
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2013 
Syntax
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Parameters
- part
- Type: Autodesk.Revit.DBPart
 A merged part.
Return Value
The element ids of the parts that were merged to create the specified merged part.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.ExceptionsArgumentException | The specified Part is not a merged part. | 
| Autodesk.Revit.ExceptionsArgumentNullException | A non-optional argument was null |