Class GanttUndoRedoEventArgs<TValue>

Provides data for the OnUndoRedo event in the Gantt chart.

Inheritance

object

GanttUndoRedoEventArgs<TValue>

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Syncfusion.Blazor.Gantt

Assembly: Syncfusion.Blazor.dll

Syntax

public class GanttUndoRedoEventArgs<TValue>

Type Parameters

Name	Description
TValue	The type of the record used in the Gantt chart.

Remarks

This class provide details for undo or redo operations triggered by the OnUndoRedo event.

Constructors

GanttUndoRedoEventArgs()

Declaration

public GanttUndoRedoEventArgs()

Properties

Action

Gets the type of action performed in the Gantt chart.

Declaration

public GanttUndoRedoAction Action { get; }

Property Value

Type	Description
GanttUndoRedoAction	A GanttUndoRedoAction value, such as Add, Edit, or Delete.

Remarks

Defines the action to determine the specific undo or redo logic to apply. For example, Add indicates a record was added.

AddRecord

Gets the record added during an add action.

Declaration

public TValue? AddRecord { get; }

Property Value

Type	Description
TValue	The `TValue` record added, or `null` if the action is not an add operation.

Remarks

Stores the newly added task for undoing or reapplying the addition.

DeletedRecords

Gets the records deleted during a delete action.

Declaration

public List<TValue>? DeletedRecords { get; }

Property Value

Type	Description
List<TValue>	A list of `TValue` records deleted, or `null` if the action is not a delete operation.

Remarks

Stores deleted records with their hierarchy (e.g., parent-child relationships) for restoration during undo.

IsRedo

Gets a value indicating whether the action is a redo operation.

Declaration

public bool IsRedo { get; }

Property Value

Type	Description
bool	`true` if the action is a redo; otherwise, `false` for an undo action.

Remarks

Differentiates between undo and redo operations for the OnUndoRedo event.

ModifiedRecords

Gets the records modified by an edit action, including related rows.

Declaration

public List<TValue>? ModifiedRecords { get; }

Property Value

Type	Description
List<TValue>	A list of `TValue` records modified, or `null` if the action is not an edit operation.

Remarks

Includes all affected records, such as parent or dependent tasks, to support complex edit reversals.

ResourceAssignmentRecords

Gets the resource assignment data affected by the action.

Declaration

public List<object>? ResourceAssignmentRecords { get; }

Property Value

Type	Description
List<object>	A list of resource assignment objects (cast to the appropriate type based on TResources), or `null` if the action does not involve resource assignments.

Remarks

Tracks changes to task resource assignments, such as adding or removing resources, for undo or redo.

RowData

Gets the primary record affected by the action.

Declaration

public TValue? RowData { get; }

Property Value

Type	Description
TValue	The `TValue` record edited, or `null` if no single record is involved.

Remarks

Represents the main record for actions like editing a specific task.

SegmentRecords

Gets the taskbar segment data affected by the action.

Declaration

public List<object>? SegmentRecords { get; }

Property Value

Type	Description
List<object>	A list of segment objects (cast to the appropriate type based on TSegments), or `null` if the action does not involve taskbar segments.

Remarks

Tracks changes to taskbar segments, such as splitting or merging, for undo or redo.