Sets the graphic overrides assigned to elements owned by a particular user. The username cannot be on the list of removed usernames. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2012 
Syntax
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Parameters
- username
-  Type:  System String  
 The username of the desired user.
- overrides
-  Type:  Autodesk.Revit.DB WorksharingDisplayGraphicSettings  
 The desired graphic overrides for this user.
Remarks
 Note that you can specify usernames which do not yet exist in the document's user table. 
 Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | The username is on the list of removed users. | 
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL |