Class UndoCommand
Represents the command that performs undo operation
Inheritance
System.Object
UndoCommand
Implements
System.Windows.Input.ICommand
Namespace: Syncfusion.Windows.PdfViewer
Assembly: Syncfusion.SfPdfViewer.UWP.dll
Syntax
public class UndoCommand : Object, ICommandMethods
CanExecute(Object)
Defines the method that determines whether the command can execute in its current state.
Declaration
public bool CanExecute(object parameter)Parameters
| Type | Name | Description |
|---|---|---|
| System.Object | parameter |
Returns
| Type | Description |
|---|---|
| System.Boolean | true if this command can be executed; otherwise, false. |
Execute(Object)
Defines the method to be called when the command is invoked.
Declaration
public void Execute(object parameter)Parameters
| Type | Name | Description |
|---|---|---|
| System.Object | parameter | Data used by the command. If the command does not require data to be passed, this object can be set to null |
Events
CanExecuteChanged
Occurs when changes occur that affect whether or not the command should execute.
Declaration
public event EventHandler CanExecuteChangedEvent Type
| Type | Description |
|---|---|
| System.EventHandler |
Implements
System.Windows.Input.ICommand