Class DiagramSelectionChangedEventArgs

Provides data for SelectionChanged: the diagram's selection just changed in its UI. Carries both the previously-selected and the now-selected Nodes and Connectors against this manager's own tracked instances, so subscribers don't need to reconcile against the live selection themselves.

Inheritance

System.Object

DiagramSelectionChangedEventArgs

Namespace: Syncfusion.Maui.Diagram

Assembly: Syncfusion.Maui.Diagram.dll

Syntax

public sealed class DiagramSelectionChangedEventArgs : EventArgs

Remarks

OldSelectedNodes/OldSelectedConnectors capture the selection as it stood immediately before this change took effect — read directly off each tracked element's own Syncfusion.Maui.Diagram.Node.IsSelected/IsSelected flag before applying the new set.

The two-argument constructor (selectedNodes, selectedConnectors) is preserved without the old-selection fields, for callers that don't have a prior selection on hand. The four-argument constructor is what Managers.DiagramManager actually uses.

Properties

OldSelectedConnectors

Gets the connectors that were selected immediately before this change took effect. Empty (never null) when no connectors were selected before, or when the event was raised through the backward-compatible two-argument constructor.

Declaration

public IReadOnlyList<Connector> OldSelectedConnectors { get; }

Property Value

Type
System.Collections.Generic.IReadOnlyList<Connector>

OldSelectedNodes

Gets the nodes that were selected immediately before this change took effect. Empty (never null) when no nodes were selected before, or when the event was raised through the backward-compatible two-argument constructor.

Declaration

public IReadOnlyList<Node> OldSelectedNodes { get; }

Property Value

Type
System.Collections.Generic.IReadOnlyList<Node>

SelectedConnectors

Gets the connectors currently selected. Empty (never null) when none are selected.

Declaration

public IReadOnlyList<Connector> SelectedConnectors { get; }

Property Value

Type
System.Collections.Generic.IReadOnlyList<Connector>

SelectedNodes

Gets the nodes currently selected. Empty (never null) when none are selected.

Declaration

public IReadOnlyList<Node> SelectedNodes { get; }

Property Value

Type
System.Collections.Generic.IReadOnlyList<Node>