windowsforms-2654-controls-and-libraries-chart-control-visual-elements-task-link-in-the-gantt-view.md
A Gantt diagram can display dependency relationships between activities (in other words, 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, connecting the terminal points of task bars, with an arrowhead pointed to a bar, denoted as a “parent bar”.
The TaskLinkOptions object specifies drawing parameters, (i.e. Color , line Thickness , arrowhead’s ArrowHeight and ArrowWidth ) minimal distance between the line and the bars it connects ( MinIndent ) and line visibility ( Visible ).
The table below lists the main properties which affect the element’s appearance and functionality:
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Link Type
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Color
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TaskLinkOptions.Color, TaskLinkOptions.ColorSource
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Line Thickness
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Arrowhead Length
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Arrowhead Width
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Line Indentation
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Visibility
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See Also