BaseButton.BindCommand(Expression<Action>, Object, Func<Object>, Action<BaseButton, Func<Boolean>>) Method

Uses the command selector to find an appropriate parameterized command in the source and bind it to this BaseButton.

Namespace: DevExpress.XtraEditors

Assembly: DevExpress.XtraEditors.v19.2.dll

Declaration

C#

public virtual IDisposable BindCommand(
    Expression<Action> commandSelector,
    object source,
    Func<object> queryCommandParameter = null,
    Action<BaseButton, Func<bool>> updateState = null
)

VB.NET

Public Overridable Function BindCommand(
    commandSelector As Expression(Of Action),
    source As Object,
    queryCommandParameter As Func(Of Object) = Nothing,
    updateState As Action(Of BaseButton, Func(Of Boolean)) = Nothing
) As IDisposable

Parameters

Name	Type	Description
commandSelector	Expression<Action>	An Expression that selects the appropriate command from the source object.
source	Object	An Object (typically, a ViewModel) where the commandSelector looks for the required command.

Optional Parameters

Name	Type	Default	Description
queryCommandParameter	Func<Object>	*null*	A Func delegate that passes the specific Object to the command as a parameter.
updateState	Action<BaseButton, Func<Boolean>>	*null*	An Action that specifies whether this BaseButton is currently enabled.

Returns

Type	Description
IDisposable	An IDisposable object. Disposing of this object unbinds the command from this BaseButton.

Remarks

The BindCommand method supports the WinForms MVVM pattern. See the Commands topic to learn more.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the BindCommand(Expression<Action>, Object, Func<Object>, Action<BaseButton, Func<Boolean>>) method.

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#

lesson-6-multi-level-navigation-in-mvpvm-applications-t146514/CS/MvpvmNavigation/Views/ModuleA/View1EditForm.cs#L22

void BindCommands() {
    buttonOK.BindCommand(() => ViewModel.OK(), ViewModel);
    buttonCancel.BindCommand(() => ViewModel.Cancel(), ViewModel);

lesson-3-create-a-winforms-mvpvm-applicaiton-with-multiple-views-t128579/CS/MyMvpvmApplication/Views/TaskDetailView.cs#L11

    presenterCore = new TaskPresenter(taskBindingSource, ViewModel);
    simpleButton1.BindCommand(() => ViewModel.ShowNotificaion(), ViewModel);
}

VB.NET

lesson-6-multi-level-navigation-in-mvpvm-applications-t146514/VB/MvpvmNavigation/Views/ModuleA/View1EditForm.vb#L24

Private Sub BindCommands()
    buttonOK.BindCommand(Sub() ViewModel.OK(), ViewModel)
    buttonCancel.BindCommand(Sub() ViewModel.Cancel(), ViewModel)

lesson-3-create-a-winforms-mvpvm-applicaiton-with-multiple-views-t128579/VB/Views/TaskDetailView.vb#L13

    presenterCore = New TaskPresenter(taskBindingSource, ViewModel)
    simpleButton1.BindCommand(Sub() ViewModel.ShowNotificaion(), ViewModel)
End Sub