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Multiple Row Selection

This demo enables multiple selection mode. This mode allows users to press keyboard shortcuts or click checkboxes to select multiple rows.

The checkbox in the leftmost column header selects all rows. You can set the allowSelectAll property to false to disable the checkbox.

Multiple selection mode is non-recursive (when a row is selected, nested rows remain unselected). If users should select rows recursively, set the selection.recursive property to true. In this demo, you can use the checkbox under the TreeList component to toggle this property.

TreeList includes an API to select multiple rows. For details, refer to the following article: Selection API.

@(Html.DevExtreme().TreeList<DevExtreme.MVC.Demos.Models.TreeList.Employee>() .ID("employees") .DataSource(ds => ds.WebApi().Controller("TreeListEmployees").Key("ID")) .KeyExpr("ID") .ParentIdExpr("HeadID") .ShowRowLines(true) .ShowBorders(true) .Selection(s => s .Mode(SelectionMode.Multiple) .Recursive(false) ) .Columns(columns => { columns.AddFor(m => m.FullName); columns.AddFor(m => m.Title); columns.AddFor(m => m.City); columns.AddFor(m => m.State); columns.AddFor(m => m.HireDate) .Width(120); }) .ColumnAutoWidth(true) .ExpandedRowKeys(new[] { 1, 2, 10 }) .OnSelectionChanged("onSelectionChanged") ) <div class="options"> <div class="caption">Options</div> <div class="option"> <span>Selection Mode</span> @(Html.DevExtreme().SelectBox() .Value("all") .DataSource(new[] { "all", "excludeRecursive", "leavesOnly" }) .OnValueChanged(@<text> function(e) { var treeList = $("#employees").dxTreeList("instance"); treeList.clearSelection(); selectionMode = e.value; } </text> ) ) </div> <div class="option"> @(Html.DevExtreme().CheckBox() .Value(false) .Text("Recursive Selection") .OnValueChanged(@<text> function(e) { var treeList = $("#employees").dxTreeList("instance"); treeList.clearSelection(); treeList.option("selection.recursive", e.value); } </text> ) ) </div> <div class="selected-data"> <span class="caption">Selected Records:</span> <span id="selected-items-container">Nobody has been selected</span> </div> </div> <script> var selectionMode = "all"; function getEmployeeNames(employees) { if (employees.length > 0) { return employees.map(employee => employee.FullName).join(", "); } else { return "Nobody has been selected"; } } function onSelectionChanged(e) { var selectedData = e.component.getSelectedRowsData(selectionMode); $("#selected-items-container").text(getEmployeeNames(selectedData)); } </script>
using System.Web.Mvc; using DevExtreme.MVC.Demos.Models.SampleData; namespace DevExtreme.MVC.Demos.Controllers { public class TreeListController : Controller { public ActionResult MultipleRowSelection() { return View(); } } }
using DevExtreme.AspNet.Data; using DevExtreme.AspNet.Mvc; using DevExtreme.MVC.Demos.Models.TreeList; using Newtonsoft.Json; using System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Net.Http; using System.Net.Http.Formatting; using System.Web.Http; namespace DevExtreme.MVC.Demos.Controllers.ApiControllers { public class TreeListEmployeesController : ApiController { InMemoryEmployeesDataContext db = new InMemoryEmployeesDataContext(); [HttpGet] public HttpResponseMessage Get(DataSourceLoadOptions loadOptions) { return Request.CreateResponse(DataSourceLoader.Load(db.Employees, loadOptions)); } [HttpPost] public HttpResponseMessage Post(FormDataCollection form) { var values = form.Get("values"); var newEmployee = new Employee(); JsonConvert.PopulateObject(values, newEmployee); Validate(newEmployee); if(!ModelState.IsValid) return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState.GetFullErrorMessage()); db.Employees.Add(newEmployee); db.SaveChanges(); return Request.CreateResponse(HttpStatusCode.Created, newEmployee); } [HttpPut] public HttpResponseMessage Put(FormDataCollection form) { var key = Convert.ToInt32(form.Get("key")); var values = form.Get("values"); var employee = db.Employees.First(e => e.ID == key); JsonConvert.PopulateObject(values, employee); Validate(employee); if(!ModelState.IsValid) return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState.GetFullErrorMessage()); db.SaveChanges(); return Request.CreateResponse(HttpStatusCode.OK, employee); } [HttpDelete] public void Delete(FormDataCollection form) { var key = Convert.ToInt32(form.Get("key")); var employee = db.Employees.First(e => e.ID == key); db.Employees.Remove(employee); db.SaveChanges(); } } }
using System; using System.ComponentModel.DataAnnotations; namespace DevExtreme.MVC.Demos.Models.TreeList { public class Employee { public int ID { get; set; } [Required] [Display(Name = "Head")] public int HeadID { get; set; } [Required] public string FullName { get; set; } [Required] [Display(Name = "Title")] public string Prefix { get; set; } [Required] [Display(Name = "Position")] public string Title { get; set; } [Required] public string City { get; set; } [Required] public string State { get; set; } public string Email { get; set; } public string Skype { get; set; } public string MobilePhone { get; set; } public DateTime BirthDate { get; set; } [Required] public DateTime HireDate { get; set; } } }
using DevExtreme.MVC.Demos.Models.TreeList; using System; using System.Collections.Generic; namespace DevExtreme.MVC.Demos.Models.SampleData { public partial class SampleData { public static readonly IEnumerable<Employee> TreeListEmployees = new[] { new Employee { ID = 1, HeadID = 0, FullName = "John Heart", Prefix = "Mr.", Title ="CEO", City = "Los Angeles", State = "California", Email = "jheart@dx-email.com", Skype = "jheart_DX_skype", MobilePhone = "(213) 555-9392", BirthDate = DateTime.Parse("1964/03/16"), HireDate = DateTime.Parse("1995/01/15") }, new Employee { ID = 2, HeadID = 1, FullName = "Samantha Bright", Prefix = "Dr.", Title ="COO", City = "Los Angeles", State = "California", Email = "samanthab@dx-email.com", Skype = "samanthab_DX_skype", MobilePhone = "(213) 555-2858", BirthDate = DateTime.Parse("1966/05/02"), HireDate = DateTime.Parse("2004/05/24") }, new Employee { ID = 3, HeadID = 1, FullName = "Arthur Miller", Prefix = "Mr.", Title ="CTO", City = "Denver", State = "Colorado", Email = "arthurm@dx-email.com", Skype = "arthurm_DX_skype", MobilePhone = "(310) 555-8583", BirthDate = DateTime.Parse("1972/07/11"), HireDate = DateTime.Parse("2007/12/18") }, new Employee { ID = 4, HeadID = 1, FullName = "Robert Reagan", Prefix = "Mr.", Title ="CMO", City = "Bentonville", State = "Arkansas", Email = "robertr@dx-email.com", Skype = "robertr_DX_skype", MobilePhone = "(818) 555-2387", BirthDate = DateTime.Parse("1974/09/07"), HireDate = DateTime.Parse("2002/11/08") }, new Employee { ID = 5, HeadID = 1, FullName = "Greta Sims", Prefix = "Ms.", Title ="HR Manager", City = "Atlanta", State = "Georgia", Email = "gretas@dx-email.com", Skype = "gretas_DX_skype", MobilePhone = "(818) 555-6546", BirthDate = DateTime.Parse("1977/11/22"), HireDate = DateTime.Parse("1998/04/23") }, new Employee { ID = 6, HeadID = 3, FullName = "Brett Wade", Prefix = "Mr.", Title ="IT Manager", City = "Reno", State = "Nevada", Email = "brettw@dx-email.com", Skype = "brettw_DX_skype", MobilePhone = "(626) 555-0358", BirthDate = DateTime.Parse("1968/12/01"), HireDate = DateTime.Parse("2009/03/06") }, new Employee { ID = 7, HeadID = 5, FullName = "Sandra Johnson", Prefix = "Mrs.", Title ="Controller", City = "Beaver", State = "Utah", Email = "sandraj@dx-email.com", Skype = "sandraj_DX_skype", MobilePhone = "(562) 555-2082", BirthDate = DateTime.Parse("1974/11/15"), HireDate = DateTime.Parse("2005/05/11") }, new Employee { ID = 8, HeadID = 4, FullName = "Ed Holmes", Prefix = "Dr.", Title ="Sales Manager", City = "Malibu", State = "California", Email = "edwardh@dx-email.com", Skype = "edwardh_DX_skype", MobilePhone = "(310) 555-1288", BirthDate = DateTime.Parse("1973/07/14"), HireDate = DateTime.Parse("2005/06/19") }, new Employee { ID = 9, HeadID = 3, FullName = "Barb Banks", Prefix = "Mrs.", Title ="Support Manager", City = "Phoenix", State = "Arizona", Email = "barbarab@dx-email.com", Skype = "barbarab_DX_skype", MobilePhone = "(310) 555-3355", BirthDate = DateTime.Parse("1979/04/14"), HireDate = DateTime.Parse("2002/08/07") }, new Employee { ID = 10, HeadID = 2, FullName = "Kevin Carter", Prefix = "Mr.", Title ="Shipping Manager", City = "San Diego", State = "California", Email = "kevinc@dx-email.com", Skype = "kevinc_DX_skype", MobilePhone = "(213) 555-2840", BirthDate = DateTime.Parse("1978/01/09"), HireDate = DateTime.Parse("2009/08/11") }, new Employee { ID = 11, HeadID = 5, FullName = "Cindy Stanwick", Prefix = "Ms.", Title ="HR Assistant", City = "Little Rock", State = "Arkansas", Email = "cindys@dx-email.com", Skype = "cindys_DX_skype", MobilePhone = "(818) 555-6655", BirthDate = DateTime.Parse("1985/06/05"), HireDate = DateTime.Parse("2008/03/24") }, new Employee { ID = 12, HeadID = 8, FullName = "Sammy Hill", Prefix = "Mr.", Title ="Sales Assistant", City = "Pasadena", State = "California", Email = "sammyh@dx-email.com", Skype = "sammyh_DX_skype", MobilePhone = "(626) 555-7292", BirthDate = DateTime.Parse("1984/02/17"), HireDate = DateTime.Parse("2012/02/01") }, new Employee { ID = 13, HeadID = 10, FullName = "Davey Jones", Prefix = "Mr.", Title ="Shipping Assistant", City = "Pasadena", State = "California", Email = "davidj@dx-email.com", Skype = "davidj_DX_skype", MobilePhone = "(626) 555-0281", BirthDate = DateTime.Parse("1983/03/06"), HireDate = DateTime.Parse("2011/04/24") }, new Employee { ID = 14, HeadID = 10, FullName = "Victor Norris", Prefix = "Mr.", Title ="Shipping Assistant", City = "Little Rock", State = "Arkansas", Email = "victorn@dx-email.com", Skype = "victorn_DX_skype", MobilePhone = "(213) 555-9278", BirthDate = DateTime.Parse("1986/07/23"), HireDate = DateTime.Parse("2012/07/23") }, new Employee { ID = 15, HeadID = 10, FullName = "Mary Stern", Prefix = "Ms.", Title ="Shipping Assistant", City = "Beaver", State = "Utah", Email = "marys@dx-email.com", Skype = "marys_DX_skype", MobilePhone = "(818) 555-7857", BirthDate = DateTime.Parse("1982/04/08"), HireDate = DateTime.Parse("2012/08/12") }, new Employee { ID = 16, HeadID = 10, FullName = "Robin Cosworth", Prefix = "Mrs.", Title ="Shipping Assistant", City = "Los Angeles", State = "California", Email = "robinc@dx-email.com", Skype = "robinc_DX_skype", MobilePhone = "(818) 555-0942", BirthDate = DateTime.Parse("1981/06/12"), HireDate = DateTime.Parse("2012/09/01") }, new Employee { ID = 17, HeadID = 9, FullName = "Kelly Rodriguez", Prefix = "Ms.", Title ="Support Assistant", City = "Boise", State = "Idaho", Email = "kellyr@dx-email.com", Skype = "kellyr_DX_skype", MobilePhone = "(818) 555-9248", BirthDate = DateTime.Parse("1988/05/11"), HireDate = DateTime.Parse("2012/10/13") }, new Employee { ID = 18, HeadID = 9, FullName = "James Anderson", Prefix = "Mr.", Title ="Support Assistant", City = "Atlanta", State = "Georgia", Email = "jamesa@dx-email.com", Skype = "jamesa_DX_skype", MobilePhone = "(323) 555-4702", BirthDate = DateTime.Parse("1987/01/29"), HireDate = DateTime.Parse("2012/10/18") }, new Employee { ID = 19, HeadID = 9, FullName = "Antony Remmen", Prefix = "Mr.", Title ="Support Assistant", City = "Boise", State = "Idaho", Email = "anthonyr@dx-email.com", Skype = "anthonyr_DX_skype", MobilePhone = "(310) 555-6625", BirthDate = DateTime.Parse("1986/02/19"), HireDate = DateTime.Parse("2013/01/19") }, new Employee { ID = 20, HeadID = 8, FullName = "Olivia Peyton", Prefix = "Mrs.", Title ="Sales Assistant", City = "Atlanta", State = "Georgia", Email = "oliviap@dx-email.com", Skype = "oliviap_DX_skype", MobilePhone = "(310) 555-2728", BirthDate = DateTime.Parse("1981/06/03"), HireDate = DateTime.Parse("2012/05/14") }, new Employee { ID = 21, HeadID = 6, FullName = "Taylor Riley", Prefix = "Mr.", Title ="Network Admin", City = "San Jose", State = "California", Email = "taylorr@dx-email.com", Skype = "taylorr_DX_skype", MobilePhone = "(310) 555-7276", BirthDate = DateTime.Parse("1982/08/14"), HireDate = DateTime.Parse("2012/04/14") }, new Employee { ID = 22, HeadID = 6, FullName = "Amelia Harper", Prefix = "Mrs.", Title ="Network Admin", City = "Los Angeles", State = "California", Email = "ameliah@dx-email.com", Skype = "ameliah_DX_skype", MobilePhone = "(213) 555-4276", BirthDate = DateTime.Parse("1983/11/19"), HireDate = DateTime.Parse("2011/02/10") }, new Employee { ID = 23, HeadID = 6, FullName = "Wally Hobbs", Prefix = "Mr.", Title ="Programmer", City = "Chatsworth", State = "California", Email = "wallyh@dx-email.com", Skype = "wallyh_DX_skype", MobilePhone = "(818) 555-8872", BirthDate = DateTime.Parse("1984/12/24"), HireDate = DateTime.Parse("2011/02/17") }, new Employee { ID = 24, HeadID = 6, FullName = "Brad Jameson", Prefix = "Mr.", Title ="Programmer", City = "San Fernando", State = "California", Email = "bradleyj@dx-email.com", Skype = "bradleyj_DX_skype", MobilePhone = "(818) 555-4646", BirthDate = DateTime.Parse("1988/10/12"), HireDate = DateTime.Parse("2011/03/02") }, new Employee { ID = 25, HeadID = 6, FullName = "Karen Goodson", Prefix = "Miss", Title ="Programmer", City = "South Pasadena", State = "California", Email = "kareng@dx-email.com", Skype = "kareng_DX_skype", MobilePhone = "(626) 555-0908", BirthDate = DateTime.Parse("1987/04/26"), HireDate = DateTime.Parse("2011/03/14") }, new Employee { ID = 26, HeadID = 5, FullName = "Marcus Orbison", Prefix = "Mr.", Title ="Travel Coordinator", City = "Los Angeles", State = "California", Email = "marcuso@dx-email.com", Skype = "marcuso_DX_skype", MobilePhone = "(213) 555-7098", BirthDate = DateTime.Parse("1982/03/02"), HireDate = DateTime.Parse("2005/05/19") }, new Employee { ID = 27, HeadID = 5, FullName = "Sandy Bright", Prefix = "Ms.", Title ="Benefits Coordinator", City = "Denver", State = "Colorado", Email = "sandrab@dx-email.com", Skype = "sandrab_DX_skype", MobilePhone = "(818) 555-0524", BirthDate = DateTime.Parse("1983/09/11"), HireDate = DateTime.Parse("2005/06/04") }, new Employee { ID = 28, HeadID = 6, FullName = "Morgan Kennedy", Prefix = "Mrs.", Title ="Graphic Designer", City = "San Fernando Valley", State = "California", Email = "morgank@dx-email.com", Skype = "morgank_DX_skype", MobilePhone = "(818) 555-8238", BirthDate = DateTime.Parse("1984/07/17"), HireDate = DateTime.Parse("2012/01/11") }, new Employee { ID = 29, HeadID = 28, FullName = "Violet Bailey", Prefix = "Ms.", Title ="Jr Graphic Designer", City = "La Canada", State = "California", Email = "violetb@dx-email.com", Skype = "violetb_DX_skype", MobilePhone = "(818) 555-2478", BirthDate = DateTime.Parse("1985/06/10"), HireDate = DateTime.Parse("2012/01/19") }, new Employee { ID = 30, HeadID = 5, FullName = "Ken Samuelson", Prefix = "Dr.", Title ="Ombudsman", City = "St. Louis", State = "Missouri", Email = "kents@dx-email.com", Skype = "kents_DX_skype", MobilePhone = "(562) 555-9282", BirthDate = DateTime.Parse("1972/09/11"), HireDate = DateTime.Parse("2009/04/22") } }; } }
#employees { max-height: 440px; } .options { padding: 20px; margin-top: 20px; background-color: rgba(191, 191, 191, 0.15); } .caption { font-size: 18px; font-weight: 500; } .option { margin-top: 10px; } .selected-data { margin-top: 20px; } .option > span { width: 120px; display: inline-block; } .option > .dx-widget { display: inline-block; vertical-align: middle; width: 100%; max-width: 350px; }