Shows the elements by zoom to fit. 
   Namespace:   Autodesk.Revit.UI  
  Assembly:   RevitAPIUI  (in RevitAPIUI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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Parameters
- elementIds
-  Type:  System.Collections.Generic ICollection   ElementId  
 The set of element ids which will be shown.
Remarks
 Places all the elements on the screen by moving the view. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | elementIds is null. | 
| Autodesk.Revit.Exceptions ArgumentException | Member of elementIds is null. | 
| Autodesk.Revit.Exceptions ArgumentException | Member of elementIds is not valid. |