Gets the volume of the material with the given id. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2014 
Syntax
| C# | 
|---|
|  | 
| Visual Basic | 
|---|
|  | 
| Visual C++ | 
|---|
|  | 
Parameters
- materialId
-  Type:  Autodesk.Revit.DB ElementId  
 The material id returned from GetMaterialIds(Boolean) .
Return Value
The volume of the material for this element. Returns 0.0 if the material is not a part of this element.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentException | materialId is not a valid Element identifier. | 
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was NULL |