DelegateCommand Class

A command that calls your parameterless delegates when Execute and CanExecute logic is invoked on the command.

Namespace: DevExpress.Mvvm

Assembly: DevExpress.Mvvm.v18.1.dll

Declaration

C#

public class DelegateCommand :
    DelegateCommand<object>

VB.NET

Public Class DelegateCommand
    Inherits DelegateCommand(Of Object)

Related API Members

The following members accept/return DelegateCommand objects:

Library	Related API Members
WPF Controls	AppointmentInplaceEditorViewModel.CloseCommand
	AppointmentInplaceEditorViewModel.CommitCommand
	AppointmentInplaceEditorViewModel.RollbackCommand
	TabControlScrollView.ScrollNextCommand
	TabControlScrollView.ScrollPrevCommand
	TabControlScrollView.UpdateScrollButtonsCommand
	TabControlViewBase.ActualNewTabCommand
	TabControlViewBase.CloseTabCommand
Windows 10 App Controls	ColorEdit.ApplyColorCommand

Remarks

The delegates to be called when Execute and CanExecute logic is invoked on the command can be specified via the DelegateCommand‘s constructor.

See Delegate Commands to learn more.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the DelegateCommand class.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-create-search-window-with-find-previous-and-find-next-buttons-in-gridcontrol-t127527/CS/DevExpress.Example01/SearchBehavior/SearchBehavior.cs#L17

protected DelegateCommand _Search;

how-to-create-a-custom-wizard-using-navigationframe-t192371/CS/NavigationFrameWizard/WizardViewModel.cs#L34

protected DelegateCommand _Done;

how-to-bind-a-buttonedit-buttons-to-a-collection-in-a-view-model-t328449/CS/DXSample/ViewModels/MainViewModel.cs#L17

Content = "A",
Command = new DelegateCommand(()=> {
    MessageBoxService.ShowMessage("A");

how-to-use-delegatecommand-e5165/CS/ViewModel/MainViewModel.Wpf.cs#L6

public class MainViewModel : ViewModelBase {
    public DelegateCommand AutoUpdateCommand { get; private set; }
    public bool IsAutoUpdateCommandEnabled {

how-to-create-tilebarcontrol-with-items-and-groups-t601136/CS/DXSample/ViewModel/MainViewModel.cs#L16

Caption = "Home View",
NavigateCommand = new DelegateCommand(() => { Service.Navigate("HomeView", null, this); }),
GlyphUri = "Home_32x32.png",

VB.NET

how-to-create-search-window-with-find-previous-and-find-next-buttons-in-gridcontrol-t127527/VB/DevExpress.Example01/SearchBehavior/SearchBehavior.vb#L19

Protected _Search As DelegateCommand

how-to-use-delegatecommand-e5165/VB/ViewModel/MainViewModel.Wpf.vb#L8

Private privateAutoUpdateCommand As DelegateCommand
Public Property AutoUpdateCommand() As DelegateCommand

how-to-create-a-custom-wizard-using-navigationframe-t192371/VB/NavigationFrameWizard/WizardViewModel.vb#L46

Protected _Done As DelegateCommand

how-to-apply-mvvm-to-the-ribboncontrol-the-gallery-collection-binding-e2599/VB/ViewModel/MainViewModel.vb#L20

End Property
Private privateDeleteCommand As DelegateCommand
Public Property DeleteCommand() As DelegateCommand

Reporting_how-to-remove-standard-bar-items-and-add-custom-ones-to-the-documentviewer-toolbar-e2974/VB/WpfApplication1/MainWindowViewModel.vb#L18

End Property
Private privateCreateDocumentCommand As DelegateCommand
Public Property CreateDocumentCommand() As DelegateCommand

Inheritance

Object

DevExpress.Mvvm.CommandBase

CommandBase<Object>

DevExpress.Mvvm.DelegateCommandBase<Object>

DelegateCommand<Object>

DelegateCommand