Loads only the specified family type/symbol from a family file into the document and provides a reference to the loaded family symbol. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 16.0.0.0 (16.0.0.0) 
Syntax
| C# | 
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| Visual Basic | 
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| Visual C++ | 
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Parameters
- filename
-  Type:  System String  
 The fully qualified filename of the Family file, usually ending in .rfa.
- name
-  Type:  System String  
 The name of the type/symbol to be loaded, such as "W11x14".
- symbol
-  Type:  Autodesk.Revit.DB FamilySymbol   %  
 A reference to the family symbol that was loaded if successful, otherwise a null reference ( Nothing in Visual Basic) .
Return Value
True if the family type/symbol was loaded successfully into the project, otherwise False.Remarks
 This function supports loading of types/symbols stored in the family, or those available in the family Type Catalog file. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | Thrown when filename or name is a null reference ( Nothing in Visual Basic) or empty. |