Gets the specified fill grid. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
Syntax
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Parameters
- gridIdx
-  Type:  System Int32  
 The index of the fill grid.
Return Value
The fill grid.Exceptions
| Exception | Condition | 
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| Autodesk.Revit.Exceptions ArgumentException | The index of the FillGrid is not valid. |