aspnetmvc-401556-components-gantt-gantt-elements-dependency.md
Dependencies specify relationships between tasks.
The Gantt supports the following dependency types:
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Dependency type
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Description
| | --- | --- | |
Finish to Start (FS)
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The predecessor task’s endpoint specifies the successor task’s start point.
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Start to Start (SS)
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The predecessor task’s start point specifies the successor task’s start point.
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Finish to Finish (FF)
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The predecessor task’s end point specifies the successor task’s end point.
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Start to Finish (SF)
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The predecessor task’s start point specifies the successor task’s end point.
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The Gantt gets data for dependencies from a data table (Bind(Object, Object, Object, Object)). Use the GanttMappings.Dependency object to specify which fields in the data table correspond to dependency properties.
settings.Mappings.Dependency.Key = "ID";
settings.Mappings.Dependency.PredecessorKey = "ParentID";
settings.Mappings.Dependency.SuccessorKey = "DependentID";
settings.Mappings.Dependency.DependencyType = "Type";