| Name | Description | |
|---|---|---|
 | AddItem | Adds an C1.CalcEngine.ExpressionItem to the items collection. |
| ClearItems | Clear all items from the error collection. |
| GetFieldName | Gets the field name from the data source. |
| RegisterConstant | Registers a constant that can be evaluated by expression engine |
| RegisterFields | Registers the data source field names that can be evaluated by expression engine |
| RegisterFunction | Overloaded. Registers a function that can be evaluated by expression engine. |
| RegisterToken | Registers a token that can be evaluated by expression engine. |
| RegisterVariable |