Sets the rule's categories. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2014 
Syntax
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Parameters
- categories
-  Type:  System.Collections.Generic ICollection   ElementId  
 The categories.
Return Value
True if the set of categories was changed, false if no change was necessary.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | One of the given categories is not filterable | 
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL |