Class IBlazorHistoryChangeArgs

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

Inheritance

System.Object

IBlazorHistoryChangeArgs

Implements

System.IEquatable<IBlazorHistoryChangeArgs>

Namespace: Syncfusion.Blazor.Diagrams

Assembly: Syncfusion.Blazor.dll

Syntax

public class IBlazorHistoryChangeArgs : Object, IEquatable<IBlazorHistoryChangeArgs>

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

Methods

Equals(IBlazorHistoryChangeArgs)

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

Declaration

public bool Equals(IBlazorHistoryChangeArgs iBlazorHistoryChangeArgs)

Parameters

Type	Name	Description
IBlazorHistoryChangeArgs	iBlazorHistoryChangeArgs	Diagram history change event arguments

Returns

Type	Description
System.Boolean	Returns the node/connector are added or removed

Implements

System.IEquatable<>