Set structural section in element. 
Namespace: Autodesk.Revit.DB.Structure.StructuralSections
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since:  2015 
Syntax
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Parameters
- document
- Type: Autodesk.Revit.DBDocument
 The document that owns the family for beam, brace or structural column.
- familySymbolId
- Type: Autodesk.Revit.DBElementId
 ID of family symbol for beam, brace or structural column.
- structuralSection
- Type: Autodesk.Revit.DB.Structure.StructuralSectionsStructuralSection
 Structural section with values that will be set.
Return Value
True is returned when requested shape with values was properly set. Return false otherwise.Remarks
 Only beams, braces and structural columns can have structural section associated with it. 
Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.ExceptionsArgumentNullException | A non-optional argument was null |