wpf-devexpress-dot-mvvm-dot-ui-e9d778bd.md
A command that the CompositeCommandBehavior aggregates to create a composite command.
Namespace : DevExpress.Mvvm.UI
Assembly : DevExpress.Xpf.Core.v25.2.dll
NuGet Package : DevExpress.Wpf.Core
public class CommandItem :
DependencyObjectExt
Public Class CommandItem
Inherits DependencyObjectExt
Each CommandItem should contain the Command property that is the ICommand that the behavior should aggregate.
In the following code sample, the CompositeCommandBehavior takes two CommandItems , aggregates them to the CompositeCommand, and executes it when a user clicks the ThemedWindow‘s back button:
<dx:ThemedWindow ...
xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
xmlns:ViewModels="clr-namespace:CompositeCommandCommandPropertyName.ViewModels"
xmlns:dxmvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm"
ShowBackButton="True">
<dx:ThemedWindow.DataContext>
<ViewModels:MainViewModel/>
</dx:ThemedWindow.DataContext>
<dxmvvm:Interaction.Behaviors>
<dxmvvm:CompositeCommandBehavior CommandPropertyName="NavigateBackCommand">
<dxmvvm:CommandItem Command="{Binding SaveCommand}"/>
<dxmvvm:CommandItem Command="{Binding CloseCommand}"/>
</dxmvvm:CompositeCommandBehavior>
</dxmvvm:Interaction.Behaviors>
<!-- ... -->
</dx:ThemedWindow>
using DevExpress.Mvvm;
using DevExpress.Mvvm.DataAnnotations;
using System.Windows;
public partial class MainViewModel : ViewModelBase {
[Command]
public void Save()
{
// ...
}
[Command]
public void Close()
{
// ...
}
}
Imports DevExpress.Mvvm
Imports DevExpress.Mvvm.DataAnnotations
Imports System.Windows
Public Partial Class MainViewModel
Inherits ViewModelBase
<Command>
Public Sub Save()
' ...
End Sub
<Command>
Public Sub Close()
' ...
End Sub
End Class
The following code snippets (auto-collected from DevExpress Examples) contain references to the CommandItem 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.
wpf-bind-gridcontrol-to-dynamic-data/CS/ITypedList/MainWindow.xaml#L28
<dxmvvm:CompositeCommandBehavior>
<dxmvvm:CommandItem Command="{Binding AddColumnCommand}" />
<dxmvvm:CommandItem Command="{DXCommand '@e(Grid).PopulateColumns()'}" />
wpf-data-grid-specify-row-visibility-in-viewmodel/CS/CustomFilteringMVVM/MainWindow.xaml#L42
<dxmvvm:CompositeCommandBehavior>
<dxmvvm:CommandItem Command="{Binding AddExclusionCommand}"/>
<dxmvvm:CommandItem Command="{DXCommand Execute='@e(grid).RefreshData()'}" />
<dxmvvm:CompositeCommandBehavior CanExecuteCondition="AnyCommandCanBeExecuted">
<dxmvvm:CommandItem Command="{Binding AddApptCommand}"
CommandParameter="false" />
Object DispatcherObject DependencyObject Freezable DevExpress.Mvvm.UI.Native.DependencyObjectExt CommandItem
See Also