Class IBlazorSelectionChangeEventArgs

Notifies when select or deselect any objects from the diagram.

Inheritance

System.Object

IBlazorSelectionChangeEventArgs

Namespace: Syncfusion.Blazor.Diagrams

Assembly: Syncfusion.Blazor.dll

Syntax

public class IBlazorSelectionChangeEventArgs : Object

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	true, if the element is canceled. Otherwise, false.

Cause

Returns the actual cause of the event.

Declaration

public DiagramAction Cause { get; set; }

Property Value

Type	Description
DiagramAction	A DiagramAction enumeration value indicating the actual cause of the event.

NewValue

Returns the selected element after the event has triggered.

Declaration

public DiagramEventObjectCollection NewValue { get; set; }

Property Value

Type	Description
DiagramEventObjectCollection	A DiagramEventObjectCollection representing the selected element after the event.

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	A DiagramEventObjectCollection representing the previously selected elements.

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	A EventState indicating whether the event is triggered before or after adding the selection to the object.

Type

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

Declaration

public ChangeType Type { get; set; }

Property Value

Type	Description
ChangeType	A ChangeType representing the type of change for an item in a list.