Task Link in the Gantt View

Dec 17, 2020

A Gantt Diagram can display dependency relationships between activities (i.e., task relations). These relations are implemented as instances of the TaskLink class.

A task link is a relation between a parent point and child points. The dependency type is defined by the TaskLinkType enumeration member and can be specified by the TaskLink.LinkType property. These types are: Finish to Start (the most common), Finish to Finish , Start to Finish and Start to Start. Their appearance in a chart specifies the order in which tasks should begin and end.

The task link is displayed as a line that connects the terminal points of task bars, with an arrowhead pointed at a bar (the “parent bar”).

The TaskLinkOptions object specifies drawing parameters ( Color , Thickness , ArrowHeight and ArrowWidth ), the minimum distance between the line and bars it connects ( MinIndent ), and line visibility ( Visible ).

The table below lists the main properties that affect the element’s appearance and functionality:

Link Type

TaskLink.LinkType

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Color

TaskLinkOptions.Color, TaskLinkOptions.ColorSource

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Line Thickness

TaskLinkOptions.Thickness

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Arrowhead Length

TaskLinkOptions.ArrowHeight