Inserts the specified category with the specified name into the map. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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Parameters
- key
-  Type:  System String  
 The name to be used for inserting the category into the map.
- item
-  Type:  Autodesk.Revit.DB Category  
 The category to be inserted into the map.
Return Value
Whether or not the category was inserted into the map.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions InvalidOperationException | Always thrown; this list is read only. |