DiagramDataBindingBehaviorBase.KeySelector Property
Gets or sets the selector that returns the data field that identifies the data item. This is a dependency property.
Namespace: DevExpress.Xpf.Diagram
Assembly: DevExpress.Xpf.Diagram.v24.1.dll
NuGet Package: DevExpress.Wpf.Diagram
Declaration
Property Value
Type | Description |
---|---|
DevExpress.Diagram.Core.IKeySelector | An object implementing the DevExpress.Diagram.Core.IKeySelector interface. |
Remarks
Use the KeySelector property to define a custom logic for choosing the data field that identifies the data item (e.g., when binding to data with multiple types of data objects). To do this, implement the GetKey method of the DevExpress.Diagram.Core.IKeySelector interface, so that it returns the data field that identifies the data item. See the example below.
<dxdiag:DiagramControl>
<dxdiag:DiagramControl.Resources>
<local:DatabaseDefinitionKeySelector x:Key="databaseDefinitionKeySelector"/>
</dxdiag:DiagramControl.Resources>
<dxmvvm:Interaction.Behaviors>
<dxdiag:DiagramDataBindingBehavior ItemsSource="{Binding Database.Tables}"
ItemsPath="Columns" KeySelector="{StaticResource databaseDefinitionKeySelector}">
<!---->
</dxdiag:DiagramDataBindingBehavior>
</dxmvvm:Interaction.Behaviors>
</dxdiag:DiagramControl>
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the KeySelector property.
Note
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