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Data Grids / Data Management
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Data Grid
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Scrolling
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Export to PDF
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Export to Excel
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Keyboard Navigation
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Columns
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Keyboard Navigation
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Card View
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Pivot Grid
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Data Summaries
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Scrolling
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Export to Excel
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Filter Builder
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Area Charts
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Calendar
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Vector Map
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Data Binding
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Related Demos:
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Tabs - Selection
This demo processes tab selection and uses SelectBox and MultiView components to emulate page content. Both these components are bound to Tabs, and vice versa.
Backend API
<div id="center-content">
<div id="demo-items-container">
<div class="content dx-fieldset">
<div class="dx-field">
<div class="tabs-container">
@(Html.DevExtreme().Tabs()
.ID("tabs")
.OnInitialized("onTabsInitialized")
.DataSource(new JS("employees"))
.SelectedItem(new JS("employees[0]"))
.OnSelectionChanged("selectionChanged")
)
</div>
</div>
<div class="dx-field select-box-container">
<div class="dx-field-label">Selected user:</div>
<div class="dx-field-value">
@(Html.DevExtreme().SelectBox()
.ID("select")
.OnInitialized("onSelectBoxInitialized")
.DataSource(new JS("employees"))
.OnSelectionChanged("selectionChanged")
.InputAttr("aria-label", "Select Employee")
.Value(new JS("employees[0]"))
.DisplayExpr("text")
)
</div>
</div>
<div class="dx-field multiview-container">
@(Html.DevExtreme().MultiView()
.ID("multiview")
.OnInitialized("onMultiviewInitialized")
.OnSelectionChanged("selectionChanged")
.SelectedItem(new JS("employees[0]"))
.Height(112)
.DataSource(new JS("employees"))
.Loop(false)
.AnimationEnabled(true)
.ItemTemplate(@<text>
<div class="employee-info">
<img src="<%- picture %>" alt="<%- text %>" class="employee-photo" />
<p class="employee-notes">
<b>Position: <%- position %></b><br />
<%- notes %>
</p>
</div>
</text>)
)
</div>
<div class="icon-container">
<span class="dx-icon dx-icon-info"></span>
<span class="demo-info">You can use swipe gestures in this area.</span>
</div>
</div>
</div>
</div>
<script>
let multiview;
let selectBox;
let tabs;
function onMultiviewInitialized(e) {
multiview = e.component;
}
function onSelectBoxInitialized(e) {
selectBox = e.component;
}
function onTabsInitialized(e) {
tabs = e.component;
}
function setSelection(value) {
if (tabs) {
tabs.option('selectedItem', value);
}
if (selectBox) {
selectBox.option('value', value);
}
if (multiview) {
multiview.option('selectedItem', value);
}
}
function selectionChanged(e) {
if (e.selectedItem || e.addedItems?.length) {
setSelection(e.selectedItem || e.addedItems[0])
}
}
const employees = [
{
id: 0,
icon: 'user',
text: 'John Heart',
position: 'CEO',
picture: '../../Content/Images/employees/01.png',
notes: 'John has been in the Audio/Video industry since 1990. He has led DevAv as its CEO since 2003. When not working hard as the CEO, John loves to golf and bowl. He once bowled a perfect game of 300.',
},
{
id: 1,
icon: 'user',
text: 'Olivia Peyton',
position: 'Sales Assistant',
picture: '../../Content/Images/employees/09.png',
notes: 'Olivia loves to sell. She has been selling DevAV products since 2012. Olivia was homecoming queen in high school. She is expecting her first child in 6 months. Good Luck Olivia.',
},
{
id: 2,
icon: 'user',
text: 'Robert Reagan',
position: 'CMO',
picture: '../../Content/Images/employees/03.png',
notes: 'Robert was recently voted the CMO of the year by CMO Magazine. He is a proud member of the DevAV Management Team. Robert is a championship BBQ chef, so when you get the chance ask him for his secret recipe.',
},
];
</script>
using DevExtreme.AspNet.Data;
using DevExtreme.AspNet.Mvc;
using DevExtreme.MVC.Demos.Models.SampleData;
using System.Web.Mvc;
namespace DevExtreme.MVC.Demos.Controllers {
public class TabsController : Controller {
public ActionResult Selection() {
return View();
}
}
}
#center-content {
display: flex;
align-items: center;
justify-content: center;
}
.select-box-container, .multiview-container {
padding: 16px;
}
#demo-items-container {
width: 680px;
}
.employee-info {
display: flex;
align-items: center;
}
.employee-photo {
height: 80px;
width: 80px;
border-radius: 50%;
border: 1px solid #ebebeb;
flex-shrink: 0;
object-fit: contain;
margin-right: 24px;
border-color: var(--dx-color-border);
}
.employee-notes b {
display: inline-block;
margin-bottom: 8px;
}
.dx-field-label {
font-size: 16px;
}
#multiview {
cursor: move;
}
.demo-info {
padding-left: 8px;
opacity: 0.6;
}
.icon-container {
padding-left: 16px;
display: flex;
align-items: center;
}
.dx-icon {
font-size: 18px;
}
You can use the following properties to configure selection:
-
selectedIndex
The index of the selected item. -
selectedItem
The selected item. -
selectedItems
An array of selected items. -
selectedItemKeys
An array of selected item keys. -
selectionMode
Specifies whether the component allows users to select only a single item or multiple items. -
onSelectionChanged
A function that is executed when a collection item is selected or selection is canceled.