WCTrendlines Collection Object

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WCSeries object
WCTrendline object
Border object
WCDataLabel object

The collection of WCTrendline objects for a series. Note that the WCTrendlines collection can contain only one WCTrendline object (that is, there can be only one trendline for each series).

Using the WCTrendlines Collection

The WCSeries object’s Trendlines property returns a WCTrendlines collection.