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Backend API
@model DevExtreme.MVC.Demos.ViewModels.SelectBoxViewModel
<div id="selectbox-demo">
<div class="widget-container">
<div class="dx-fieldset">
<div class="dx-fieldset-header">SearchBox</div>
<div class="dx-field">
<div class="dx-field-label">Product</div>
<div class="dx-field-value">
@(Html.DevExtreme().SelectBox()
.ID("search-box")
.InputAttr("aria-label", "Product")
.DataSource(d => d
.Mvc()
.LoadAction("GetItems")
.LoadMode(DataSourceLoadMode.Raw)
.Key("ID")
)
.DisplayExpr("Name")
.ValueExpr("ID")
.SearchEnabled(true)
)
</div>
</div>
</div>
<div class="dx-fieldset">
<div class="dx-fieldset-header">EditBox</div>
<div class="dx-field">
<div class="dx-field">
<div class="dx-field-label">Product</div>
<div class="dx-field-value">
@(Html.DevExtreme().SelectBox()
.DataSource(d => d.WebApi()
.Controller("SelectBoxEditing")
.LoadMode(DataSourceLoadMode.Raw)
.InsertAction(true)
.Key("ID")
)
.InputAttr("aria-label", "Custom Product")
.DisplayExpr("Name")
.ValueExpr("ID")
.AcceptCustomValue(true)
.OnValueChanged("selectBox_valueChanged")
.OnCustomItemCreating("selectBox_customItemCreating")
.Value(0)
)
</div>
</div>
<div class="dx-field current-product">
Current product:
<span class="current-value">
HD Video Player (ID: 0)
</span>
</div>
</div>
</div>
</div>
<div class="options">
<div class="caption">SearchBox Options</div>
<div class="option">
<div>Search Mode</div>
@(Html.DevExtreme().SelectBox()
.DataSource(new JS("searchModes"))
.InputAttr("aria-label", "Search Mode")
.Value(new JS("searchModes[0]"))
.OnValueChanged("searchMode_changed")
)
</div>
<div class="option">
<div>Search Expression</div>
@(Html.DevExtreme().SelectBox()
.DataSource(new JS("searchExpressions"))
.DisplayExpr("name")
.InputAttr("aria-label", "Search Expression")
.ValueExpr("value")
.Value(new JS("searchExpressions[0].value"))
.OnValueChanged("searchExpr_changed")
)
</div>
<div class="option">
<div>Search Timeout</div>
@(Html.DevExtreme().NumberBox()
.Min(0)
.Max(5000)
.Value(200)
.ShowSpinButtons(true)
.Step(100)
.InputAttr("aria-label", "Search Timeout")
.OnValueChanged("searchTimeout_changed")
)
</div>
<div class="option">
<div>Minimum Search Length</div>
@(Html.DevExtreme().NumberBox()
.Min(0)
.Max(5)
.Value(0)
.ShowSpinButtons(true)
.InputAttr("aria-label", "Minimum Search Length")
.OnValueChanged("minSearchLength_changed")
)
</div>
<div class="option">
@(Html.DevExtreme().CheckBox()
.Value(false)
.Text("Show Data Before Search")
.OnValueChanged("showDataBeforeSearch_changed")
)
</div>
</div>
</div>
<script>
var searchModes = ["contains", "startswith"];
var searchExpressions = [{
name: "'Name'",
value: "Name"
}, {
name: "['Name', 'Category']",
value: ['Name', 'Category']
}];
function selectBox_valueChanged(data) {
var $result = $(".current-value");
if (data.value !== null) {
var selectedItem = data.component.option('selectedItem');
$result.text(selectedItem.Name + " (ID: " + selectedItem.ID + ")");
} else {
$result.text("Not selected");
}
}
function getSearchBoxInstance() {
return $("#search-box").dxSelectBox("instance");
}
function searchMode_changed(data) {
getSearchBoxInstance().option("searchMode", data.value);
}
function searchExpr_changed(data) {
getSearchBoxInstance().option("searchExpr", data.value);
}
function searchTimeout_changed(data) {
getSearchBoxInstance().option("searchTimeout", data.value);
}
function minSearchLength_changed(data) {
getSearchBoxInstance().option("minSearchLength", data.value);
}
function showDataBeforeSearch_changed(data) {
getSearchBoxInstance().option("showDataBeforeSearch", data.value);
}
function selectBox_customItemCreating(data) {
if (!data.text) {
data.customItem = null;
return;
}
var dataSource = data.component.getDataSource();
var newItem = { Name: data.text };
var result = dataSource.store().insert(newItem);
result.done(function() {
dataSource.reload();
})
data.customItem = result;
}
</script>
using DevExtreme.AspNet.Data;
using DevExtreme.AspNet.Mvc;
using DevExtreme.MVC.Demos.Models.SampleData;
using DevExtreme.MVC.Demos.ViewModels;
using System.Linq;
using System.Text.Json;
using System.Web.Mvc;
namespace DevExtreme.MVC.Demos.Controllers {
public class SelectBoxController : Controller {
public ActionResult SearchAndEditing() {
return View(new SelectBoxViewModel {
Items = SampleData.Electronics.Select(i => i.Name)
});
}
public ActionResult GetItems(DataSourceLoadOptions loadOptions) {
return Content(JsonSerializer.Serialize(DataSourceLoader.Load(SampleData.Electronics, loadOptions)), "application/json");
}
}
}
using DevExtreme.MVC.Demos.Models;
using Newtonsoft.Json;
using System;
using System.Net.Http;
using System.Net.Http.Formatting;
using System.Web.Http;
namespace DevExtreme.MVC.Demos.Controllers.ApiControllers {
public class SelectBoxEditingController : ApiController {
readonly InMemorySelectBoxDataContext _dataContext = new InMemorySelectBoxDataContext();
[HttpGet]
public HttpResponseMessage Get() {
return Request.CreateResponse(_dataContext.Items);
}
[HttpPost]
public HttpResponseMessage Post(FormDataCollection form) {
var values = form.Get("values");
var newItem = new ElectronicsSimpleItem();
JsonConvert.PopulateObject(values, newItem);
_dataContext.Items.Add(newItem);
_dataContext.SaveChanges();
return Request.CreateResponse(newItem);
}
}
}
using System;
using System.Collections.Generic;
namespace DevExtreme.MVC.Demos.Models.SampleData {
public partial class SampleData {
public static readonly IEnumerable<ElectronicsItem> Electronics = new[] {
new ElectronicsItem {
ID = 1,
Name = "HD Video Player",
Price = 330,
CurrentInventory = 225,
Backorder = 0,
Manufacturing = 10,
Category = "Video Players",
ImageSrc = "../../Content/images/products/1-small.png",
IconSrc = "../../Content/images/icons/video-player.svg"
},
new ElectronicsItem {
ID = 2,
Name = "SuperHD Player",
Price = 400,
CurrentInventory = 150,
Backorder = 0,
Manufacturing = 25,
Category = "Video Players",
ImageSrc = "../../Content/images/products/2-small.png",
IconSrc = "../../Content/images/icons/video-player.svg"
},
new ElectronicsItem {
ID = 3,
Name = "SuperPlasma 50",
Price = 2400,
CurrentInventory = 0,
Backorder = 0,
Manufacturing = 0,
Category = "Televisions",
ImageSrc = "../../Content/images/products/3-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 4,
Name = "SuperLED 50",
Price = 1600,
CurrentInventory = 77,
Backorder = 0,
Manufacturing = 55,
Category = "Televisions",
ImageSrc = "../../Content/images/products/4-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 5,
Name = "SuperLED 42",
Price = 1450,
CurrentInventory = 445,
Backorder = 0,
Manufacturing = 0,
Category = "Televisions",
ImageSrc = "../../Content/images/products/5-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 6,
Name = "SuperLED 55",
Price = 1350,
CurrentInventory = 345,
Backorder = 0,
Manufacturing = 5,
Category = "Televisions",
ImageSrc = "../../Content/images/products/6-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 7,
Name = "SuperLCD 42",
Price = 1200,
CurrentInventory = 210,
Backorder = 0,
Manufacturing = 20,
Category = "Televisions",
ImageSrc = "../../Content/images/products/7-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 8,
Name = "SuperPlasma 65",
Price = 3500,
CurrentInventory = 0,
Backorder = 0,
Manufacturing = 0,
Category = "Televisions",
ImageSrc = "../../Content/images/products/8-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 9,
Name = "SuperLCD 70",
Price = 4000,
CurrentInventory = 95,
Backorder = 0,
Manufacturing = 5,
Category = "Televisions",
ImageSrc = "../../Content/images/products/9-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 10,
Name = "DesktopLED 21",
Price = 175,
CurrentInventory = 0,
Backorder = 425,
Manufacturing = 75,
Category = "Monitors",
ImageSrc = "../../Content/images/products/10-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 11,
Name = "DesktopLED 19",
Price = 165,
CurrentInventory = 425,
Backorder = 0,
Manufacturing = 110,
Category = "Monitors",
ImageSrc = "../../Content/images/products/11-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 12,
Name = "DesktopLCD 21",
Price = 170,
CurrentInventory = 210,
Backorder = 0,
Manufacturing = 60,
Category = "Monitors",
ImageSrc = "../../Content/images/products/12-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 13,
Name = "DesktopLCD 19",
Price = 160,
CurrentInventory = 150,
Backorder = 0,
Manufacturing = 210,
Category = "Monitors",
ImageSrc = "../../Content/images/products/13-small.png",
IconSrc = "../../Content/images/icons/tv.svg"
},
new ElectronicsItem {
ID = 14,
Name = "Projector Plus",
Price = 550,
CurrentInventory = 0,
Backorder = 55,
Manufacturing = 10,
Category = "Monitors",
ImageSrc = "../../Content/images/products/14-small.png",
IconSrc = "../../Content/images/icons/video-player.svg"
},
new ElectronicsItem {
ID = 15,
Name = "Projector PlusHD",
Price = 750,
CurrentInventory = 110,
Backorder = 0,
Manufacturing = 90,
Category = "Projectors",
ImageSrc = "../../Content/images/products/15-small.png",
IconSrc = "../../Content/images/icons/video-player.svg"
},
new ElectronicsItem {
ID = 16,
Name = "Projector PlusHT",
Price = 1050,
CurrentInventory = 0,
Backorder = 75,
Manufacturing = 57,
Category = "Projectors",
ImageSrc = "../../Content/images/products/16-small.png",
IconSrc = "../../Content/images/icons/video-player.svg"
},
new ElectronicsItem {
ID = 17,
Name = "ExcelRemote IR",
Price = 150,
CurrentInventory = 650,
Backorder = 0,
Manufacturing = 190,
Category = "Automation",
ImageSrc = "../../Content/images/products/17-small.png",
IconSrc = "../../Content/images/icons/video-player.svg"
},
new ElectronicsItem {
ID = 18,
Name = "ExcelRemote BT",
Price = 180,
CurrentInventory = 310,
Backorder = 0,
Manufacturing = 0,
Category = "Automation",
ImageSrc = "../../Content/images/products/18-small.png",
IconSrc = "../../Content/images/icons/video-player.svg"
},
new ElectronicsItem {
ID = 19,
Name = "ExcelRemote IP",
Price = 200,
CurrentInventory = 0,
Backorder = 325,
Manufacturing = 225,
Category = "Automation",
ImageSrc = "../../Content/images/products/19-small.png",
IconSrc = "../../Content/images/icons/video-player.svg"
}
};
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace DevExtreme.MVC.Demos.Models {
public class ElectronicsItem {
public int ID { get; set; }
public string Category { get; set; }
public string Name { get; set; }
public int CurrentInventory { get; set; }
public int Backorder { get; set; }
public int Manufacturing { get; set; }
public int Price { get; set; }
public string ImageSrc { get; set; }
public string IconSrc { get; set; }
}
}
using System;
using System.Collections.Generic;
namespace DevExtreme.MVC.Demos.Models.SampleData {
public partial class SampleData {
public static readonly IEnumerable<ElectronicsSimpleItem> ElectronicsSimple = new[] {
new ElectronicsSimpleItem {
Name = "HD Video Player",
ID = 0
},
new ElectronicsSimpleItem {
Name = "SuperHD Video Player",
ID= 1
},
new ElectronicsSimpleItem {
Name = "SuperPlasma 50",
ID = 2
},
new ElectronicsSimpleItem {
Name = "SuperLED 50",
ID = 3
},
new ElectronicsSimpleItem {
Name = "SuperLED 42",
ID = 4
},
new ElectronicsSimpleItem {
Name = "SuperLCD 55",
ID = 5
},
new ElectronicsSimpleItem {
Name = "SuperLCD 42",
ID = 6
},
new ElectronicsSimpleItem {
Name = "SuperPlasma 65",
ID = 7
},
new ElectronicsSimpleItem {
Name = "SuperLCD 70",
ID = 8
},
new ElectronicsSimpleItem {
Name = "Projector Plus",
ID = 9 },
new ElectronicsSimpleItem {
Name = "Projector PlusHT",
ID = 10
},
new ElectronicsSimpleItem {
Name = "ExcelRemote IR",
ID = 11
},
new ElectronicsSimpleItem {
Name = "ExcelRemote Bluetooth",
ID = 12
},
new ElectronicsSimpleItem {
Name = "ExcelRemote IP",
ID = 13
}
};
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace DevExtreme.MVC.Demos.Models {
public class ElectronicsSimpleItem {
public int ID { get; set; }
public string Name { get; set; }
}
}
using System;
using System.Collections.Generic;
using System.Linq;
namespace DevExtreme.MVC.Demos.ViewModels {
public class SelectBoxViewModel {
public IEnumerable<string> Items { get; set; }
}
}
.widget-container {
margin-right: 320px;
}
.current-product {
padding-top: 11px;
}
.current-value {
font-weight: bold;
}
.options {
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
position: absolute;
right: 0;
top: 0;
bottom: 0;
width: 260px;
}
.caption {
font-weight: 500;
font-size: 18px;
}
.option {
margin-top: 10px;
}
The following properties help you configure the feature:
- searchExpr
Specifies one or several data fields to search. - searchMode
Specifies whether found items should contain the typed-in string or start with it. - searchTimeout
Specifies the delay between the moment a user stops typing and the moment the search is executed. - minSearchLength
Specifies the minimum number of characters that a user should type in to trigger the search. - showDataBeforeSearch
Specifies whether the SelectBox should display the unfiltered item list until a user have typed in the minimum number of characters (minSearchLength).
Set the acceptCustomValue property to true to allow users to add values to the SelectBox. You should also implement the onCustomItemCreating handler to create new data source entries.