| Class | Description | |
|---|---|---|
 | Argument | Represents a expression item argument. |
| C1CalcEngine | The C1CalcEngine class is used to work with expression engines, and provides an API for analyzing and evaluate expression. |
| ErrorInfo | Provides a information about error of evaluating or parsing. |
| ExpressionItem | Represents a expression item. |
| Interface | Description | |
|---|---|---|
 | IDataSheet | Defines properties and methods of object representing the sheet that uses C1.CalcEngine.ExcelEngine.ExcelEngine as a data source. |
| IEngine | Defines properties and methods of expression engine. |
| IEngineExpressionItems | |
| IEngineExtended | Defines extended properties and methods of expression engine. |
| ISupportAliases | |
| ISupportCustomFunctions | |
| ISupportVariables |
| Enumeration | Description | |
|---|---|---|
 | ErrorType | Specifies the type of error. |
| ItemType | Determines the type of a ExpressionItem. |
