Class IBlazorSelectionChangeEventArgs

Notifies when select or deselect any objects from the diagram.

Inheritance

System.Object

IBlazorSelectionChangeEventArgs

Implements

System.IEquatable<IBlazorSelectionChangeEventArgs>

Namespace: Syncfusion.Blazor.Diagrams

Assembly: Syncfusion.Blazor.dll

Syntax

public class IBlazorSelectionChangeEventArgs : Object, IEquatable<IBlazorSelectionChangeEventArgs>

Examples

<SfDiagram Height="600px" Nodes="@NodeCollection">
       <DiagramEvents SelectionChanged = "Selection" ></ DiagramEvents >
</ SfDiagram >
@code{
   public ObservableCollection<DiagramNode> NodeCollection = new ObservableCollection<DiagramNode>();
   public void Selection(IBlazorSelectionChangeEventArgs args)
   {
       args.Cancel = false;
       if ((args != null) && (args.State == EventState.Changed) && (args.NewValue != null))
       {
           Console.WriteLine("Edited");
       }
   }
   protected override void OnInitialized()
   {
       // A node is created and stored in the node array.
       DiagramNode Node = new DiagramNode()
       {
           Id = "node1",
           Height = 100,
           Width = 100,
           OffsetX = 300,
           OffsetY = 100,
       };
       NodeCollection.Add(Node);
   }
}

Constructors

IBlazorSelectionChangeEventArgs()

Declaration

public IBlazorSelectionChangeEventArgs()

Properties

Cancel

Users can define whether the element can be selected.

Declaration

public bool Cancel { get; set; }

Property Value

Type	Description
System.Boolean

Cause

Returns the actual cause of the event.

Declaration

public DiagramAction Cause { get; set; }

Property Value

Type	Description
DiagramAction

NewValue

Returns the selected element after the event has triggered.

Declaration

public DiagramEventObjectCollection NewValue { get; set; }

Property Value

Type	Description
DiagramEventObjectCollection

OldValue

Returns the last selected elements, it's empty if previously, not objects have selected.

Declaration

public DiagramEventObjectCollection OldValue { get; set; }

Property Value

Type	Description
DiagramEventObjectCollection

State

Triggers before and after adding the selection to the object in the diagram which can be differentiated through state argument. We can cancel the event only before the selection of the object.

Declaration

public EventState State { get; set; }

Property Value

Type	Description
EventState

Type

Returns whether the item is added or removed from the list.

Declaration

public ChangeType Type { get; set; }

Property Value

Type	Description
ChangeType

Methods

Equals(IBlazorSelectionChangeEventArgs)

Indicates whether the IBlazorSelectionChangeEventArgs object is equal to another object of the same type.

Declaration

public bool Equals(IBlazorSelectionChangeEventArgs iBlazorSelectionChangeEventArgs)

Parameters

Type	Name	Description
IBlazorSelectionChangeEventArgs	iBlazorSelectionChangeEventArgs	Diagram selection change event arguments.

Returns

Type	Description
System.Boolean	Returns the node/connector selected.

Implements

System.IEquatable<>