Class IBlazorHistoryChangeArgs

Notifies when the change is reverted, restored or any custom actions detected in the diagram.

Inheritance

System.Object

IBlazorHistoryChangeArgs

Namespace: Syncfusion.Blazor.Diagrams

Assembly: Syncfusion.Blazor.dll

Syntax

public class IBlazorHistoryChangeArgs : Object

Examples

   <SfDiagram Height = "600px" Nodes="@NodeCollection">
   <DiagramEvents HistoryChanged = "History" ></ DiagramEvents >
</ SfDiagram >
@code
   {
   public ObservableCollection<DiagramNode> NodeCollection = new ObservableCollection<DiagramNode>();
   public void History(IBlazorHistoryChangeArgs args)
   {
       if ((args != null) && (args.Action == HistoryChangeAction.CustomAction) && (args.Change != null) && (args.Source != null))
       {
           Console.WriteLine("Dragged");
       }
   }
   protected override void OnInitialized()
   {
       NodeCollection = new ObservableCollection<DiagramNode>()
       {
           new DiagramNode(){
               Id="node1",
               Height = 100,
               Width = 100,
               OffsetX = 300,
               OffsetY = 100
           },
       };
   }
}

Constructors

IBlazorHistoryChangeArgs()

Declaration

public IBlazorHistoryChangeArgs()

Properties

Action

Returns the action of an element such as undo, redo, or any custom action.

Declaration

public HistoryChangeAction Action { get; set; }

Property Value

Type	Description
HistoryChangeAction

Cause

Returns the cause of the event.

Declaration

public string Cause { get; set; }

Property Value

Type	Description
System.String

Change

Returns the collection of objects that have changed in the last action such as undo, redo.

Declaration

public ChangedObject Change { get; set; }

Property Value

Type	Description
ChangedObject

Source

Returns the collection of objects that have changed in the last action such as undo, redo.

Declaration

public DiagramEventObjectCollection Source { get; set; }

Property Value

Type	Description
DiagramEventObjectCollection