| Class | Description | |
|---|---|---|
|  | ArrayProxy | Represents a two-dimensional array of ExcelCalcValue instances used in calculations. | 
|  | ExcelCalcErrorValue | Provides methods and properties used to define and manage a calculation error value. | 
|  | ExcelCalcFunction | Base class for formula functions. | 
|  | ExcelCalcNumberStack | Stack of ExcelCalcValue instances used to evaluate formulas. | 
|  | ExcelCalcValue | Provides methods that manage a composite data type representing a value. | 
| Interface | Description | |
|---|---|---|
|  | IExcelCalcFormula | Interface implemented by the formula object. | 
|  | IExcelCalcReference | The Primary Reference Inteface. | 
|  | IExcelCalcReferenceCollection | Collection of IExcelCalcReference objects | 
| Enumeration | Description | |
|---|---|---|
|  | ExcelCalcErrorCode | Enumeration of error codes assigned to ExcelCalcErrorValue. |