# C1.CalcEngine ## Content

C1.CalcEngine Namespace

Represents a expression item argument.

The C1CalcEngine class is used to work with expression engines, and provides an API for analyzing and evaluate expression.

Provides a information about error of evaluating or parsing.

Represents a expression item.

Defines properties and methods of object representing the sheet that uses ExcelEngine as a data source.

Defines properties and methods of expression engine.

Defines method to get expression items for current expression engine.

Defines extended properties and methods of expression engine.

Defines methods to support aliases for fields from a data source.

Defines methods for supporting custom functions.

Defines methods for supporting variables.

Specifies the type of error.

Determines the type of a ExpressionItem.