Looks up an existing fabrication part type based on a specfic fabrication service button and condition. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 17.0.0.0 (17.0.1090.0) 
  Since:  2016 
Syntax
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Parameters
- document
 -  Type:  Autodesk.Revit.DB Document  
The document. 
- button
 -  Type:  Autodesk.Revit.DB FabricationServiceButton  
The fabrication service button. 
- condition
 -  Type:  System Int32  
The condition index. 
Return Value
Identifier of the fabrication part type element or invalidElementId if no fabrication part type exist for the specific fabrication service button and conditionExceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL | 
| Autodesk.Revit.Exceptions ArgumentOutOfRangeException | the index condition is not larger or equal to 0 and less than ConditionCount |