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  [Collapse]Diagram Control
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     How to Handle DiagramControl Events to Save Diagrams to a Database
     How to: Change the Set of Shapes Available In the Shapes Panel
     How to Create a Custom Theme for Shapes in DiagramDesignerControl
     How to Create Custom Shapes with Custom Connection Points for DiagramDesignerControl
     How to Use Custom Graph Layout Algorithms to Arrange Shapes in DiagramControl
     How to Modify RibbonControl Items and Properties in DiagramDesignerControl
     How to: Create Items with Custom Content in DiagramControl
     How to: Create a DiagramShape Descendant and Serialize Its Properties
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 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

How to Use Custom Graph Layout Algorithms to Arrange Shapes in DiagramControl

DiagramControl provides two methods that make it easier to use external graph layout algorithms to arrange diagram shapes. The GraphOperations.GetDiagramGraph method reads the diagram currently loaded into DiagramControl and returns the Graph object that contains collections of edges and nodes represented by diagram items. You can use this information to calculate positions for diagram shapes. Then, for every shape, create the PositionInfoobject containing the shape reference and its position. To apply the layout to the loaded diagram, call the DiagramControl.RelayoutDiagramItems method that accepts the collection of PositionInfo objects.This example demonstrates how the GetDiagramGraph and RelayoutDiagramItems methods can be used to connect the Microsoft Automatic Graph Layout (MSAGL) library to DiagramControl.

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