DxGridListEditor.UnselectObjects(IEnumerable) Method

Deselects a set of specified objects.

Namespace: DevExpress.ExpressApp.Blazor.Editors

Assembly: DevExpress.ExpressApp.Blazor.v21.2.dll

NuGet Package: DevExpress.ExpressApp.Blazor

Declaration

C#

public void UnselectObjects(
    IEnumerable objectsToUnselect
)

VB.NET

Public Sub UnselectObjects(
    objectsToUnselect As IEnumerable
)

Parameters

Name	Type	Description
objectsToUnselect	IEnumerable	A collection of objects to deselect.

Remarks

The code sample below demonstrates how to create a simple action that deselects records that satisfy custom criteria within a List View:

C#

using DevExpress.Data.Filtering;
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Actions;
using DevExpress.ExpressApp.Blazor.Editors;
using DevExpress.Persistent.Base;
using MySolution.Module.BusinessObjects;
using System;

namespace MySolution.Module.Blazor.Controllers {
    public class MySelectController : ObjectViewController<ListView, DemoTask> {
        public MySelectController() {
            SimpleAction unselectLowPriorityTasksAction = new SimpleAction(this, "UnselectLowPriorityTasksAction", PredefinedCategory.View) {
                Caption = "Unselect Low Priority Tasks",
                SelectionDependencyType = SelectionDependencyType.RequireMultipleObjects,
                TargetViewNesting = Nesting.Root
            };
            unselectLowPriorityTasksAction.Execute += UnselectLowPriorityTasksAction_Execute; ;
        }

        private void UnselectLowPriorityTasksAction_Execute(object sender, SimpleActionExecuteEventArgs e) {
            if(View.Editor is DxGridListEditor gridListEditor) {
                gridListEditor.UnselectObjects(
                    ObjectSpace.GetObjects<DemoTask>(
                        CriteriaOperator.FromLambda<DemoTask>(task => task.Priority == Priority.Low)
                    )
                );
            }
        }
    }
}