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Developer Guide
Reference Guide
- ( Default Namespace ) Namespace
- Autodesk.Navisworks.Api Namespace
- Autodesk.Navisworks.Api.ApplicationParts Namespace
- Autodesk.Navisworks.Api.Automation Namespace
- Autodesk.Navisworks.Api.Bim360 Namespace
- Autodesk.Navisworks.Api.Clash Namespace
- Autodesk.Navisworks.Api.ComApi Namespace
- Autodesk.Navisworks.Api.Controls Namespace
- Autodesk.Navisworks.Api.Data Namespace
- Autodesk.Navisworks.Api.DocumentParts Namespace
- Autodesk.Navisworks.Api.Plugins Namespace
- Autodesk.Navisworks.Api.Resolver Namespace
- Autodesk.Navisworks.Api.Schema Namespace
- Autodesk.Navisworks.Api.Takeoff Namespace
  - ConfigurationFileType Enumeration
  - DatabaseOperationErrorCode Enumeration
  - DocumentExtensions Class
  - DocumentTakeoff Class
  - ItemGroupTable Class
  - ItemTable Class
  - MarkupType Enumeration
  - ModelRefreshPropertyStatus Enumeration
  - ModelRefreshStatus Enumeration
  - ObjectResourceTable Class
  - ObjectStepTable Class
  - ObjectTable Class
  - Purpose Enumeration
  - ResourceGroupTable Class
  - ResourceTable Class
  - StepResourceTable Class
  - StepTable Class
  - TakeoffColumnDefinition Class
  - TakeoffProjectSettings Class
  - TakeoffSelection Class
  - TakeoffSelectionChangeEventArgs Class
  - TakeoffSheetIds Class
  - TakeoffTable Class
  - TakeoffTableSelection Class
  - TakeoffTableType Enumeration
  - TakeoffUnitGroup Enumeration
  - TakeoffUnits Enumeration
  - TakeoffUnitSystem Enumeration
  - TakeoffVariable Class
    - TakeoffVariable Members
    - TakeoffVariable Methods
    - TakeoffVariable Properties
      - TakeoffVariable.ActiveFormula Property
      - TakeoffVariable.ActiveUnits Property
      - TakeoffVariable.ActiveValue Property
      - TakeoffVariable.Definition Property
      - TakeoffVariable.Formula Property
      - TakeoffVariable.InheritedFormula Property
      - TakeoffVariable.IsAbleToGetFormula Property
      - TakeoffVariable.IsAbleToGetPropertyStatus Property
      - TakeoffVariable.IsAbleToSetFormula Property
      - TakeoffVariable.IsAbleToSetOriginalUnits Property
      - TakeoffVariable.IsAbleToSetOriginalValue Property
      - TakeoffVariable.IsAbleToSetPropertyStatus Property
      - TakeoffVariable.IsAbleToSetUnits Property
      - TakeoffVariable.IsAbleToSetValue Property
      - TakeoffVariable.IsFormulaNull Property
      - TakeoffVariable.IsInheritedFormulaNull Property
      - TakeoffVariable.IsOriginalUnitsNull Property
      - TakeoffVariable.IsOverridden Property
      - TakeoffVariable.IsReadOnly Property
      - TakeoffVariable.IsUnitsNull Property
      - TakeoffVariable.OriginalUnits Property
      - TakeoffVariable.PropertyStatus Property
      - TakeoffVariable.Units Property
      - TakeoffVariable.UnitsGroup Property
      - TakeoffVariable.Value Property
  - TakeoffVariableCollection Class
  - TakeoffVariableDefinition Class
  - TakeoffVariableDefinitionCollection Class
  - Tessellation Class
  - TessellationResult Class
  - VariableType Enumeration
- Autodesk.Navisworks.Api.Timeliner Namespace

TakeoffVariable.IsFormulaNull Property

Is variable formula null, calculation/rollup variable will get formula from parent table for calculation if its own formula is null

Namespace: Autodesk.Navisworks.Api.Takeoff
Assembly: Autodesk.Navisworks.Takeoff (in Autodesk.Navisworks.Takeoff.dll)

Syntax

Visual Basic
Public ReadOnly Property IsFormulaNull As Boolean Get

C#
public bool IsFormulaNull { get; }

Visual C++
public: property bool IsFormulaNull { bool get (); }

Exceptions

Exception	Condition
System..::..ObjectDisposedException	Object has been Disposed

Syntax

Exceptions

See Also