| SpreadsheetGear.Charts Namespace : ITrendline Interface | 
The following tables list the members exposed by ITrendline.
| Name | Description | |
|---|---|---|
![]()  | Backward | Gets or sets the property which specifies the number of periods to forecast backward. | 
![]()  | DataLabel | Returns an instance of IDataLabel which represents the data label of this trendline. | 
![]()  | DisplayEquation | Gets or sets the property which specifies whether the equation is displayed in the trendline data label. | 
![]()  | DisplayRSquared | Gets or sets the property which specifies whether the R-Squared value is displayed in the trendline data label. | 
![]()  | Format | Returns an instance of IChartFormat which represents the formatting options of this trendline. | 
![]()  | Forward | Gets or sets the property which specifies the number of periods to forecast forward. | 
![]()  | Index | Returns the zero based index of this trendline. | 
![]()  | Intercept | Gets or sets the property which specifies the y-intercept of the trendline. | 
![]()  | InterceptIsAuto | Gets or sets the property which specifies whether the y-intercept of the trendline is automatically determined. | 
![]()  | Name | Gets or sets the property which specifies a custom name for the trendline. | 
![]()  | NameIsAuto | Gets or sets the property which specifies whether the name of the trendline is automatically determined. | 
![]()  | Order | Gets or sets the property which specifies the order on a polynomial trendline. | 
![]()  | Period | Gets or sets the property which specifies the period on a moving average trendline. | 
![]()  | Type | Gets or sets the property which specifies the trendline type. |