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Related Demos:
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Card View - Selection
Backend API
@model IEnumerable<DevExtreme.NETCore.Demos.Models.CardView.Selection.Employee>
<div class="options">
<div class="caption">Options</div>
<div class="options-container">
<div class="option">
<span>Selection Mode</span>
@(Html.DevExtreme().SelectBox()
.ID("selection-mode")
.DataSource(new object[] { "single", "multiple" })
.Value("multiple")
.InputAttr("aria-label", "Selection Mode")
.OnValueChanged(@<text>
function({ value }) {
const cardView = $('#card-view').dxCardView('instance');
cardView.option('selection.mode', value);
cardView.clearSelection();
updateDisabledOptions();
}
</text>)
)
</div>
<div class="option">
<span>Show Checkboxes Mode</span>
@(Html.DevExtreme().SelectBox()
.ID("show-checkboxes-mode")
.DataSource(new object[] { "always", "none", "onClick", "onLongTap" })
.Value("always")
.InputAttr("aria-label", "Show Checkboxes Mode")
.OnValueChanged(@<text>
function({ value }) {
const cardView = $('#card-view').dxCardView('instance');
cardView.option('selection.showCheckBoxesMode', value);
updateDisabledOptions();
}
</text>)
)
</div>
<div class="option">
<span>Select All Mode</span>
@(Html.DevExtreme().SelectBox()
.ID("select-all-mode")
.DataSource(new object[] { "allPages", "page" })
.Value("allPages")
.InputAttr("aria-label", "Select All Mode")
.OnValueChanged(@<text>
function({ value }) {
const cardView = $('#card-view').dxCardView('instance');
cardView.option('selection.selectAllMode', value);
updateDisabledOptions();
}
</text>)
)
</div>
<div class="option">
@(Html.DevExtreme().CheckBox()
.ID("allow-select-all")
.Text("Allow Select All")
.Value(true)
.OnValueChanged(@<text>
function({ value }) {
const cardView = $('#card-view').dxCardView('instance');
cardView.option('selection.allowSelectAll', value);
updateDisabledOptions();
}
</text>)
)
</div>
</div>
</div>
@(Html.DevExtreme().CardView()
.ID("card-view")
.DataSource(Model, "ID")
.CardsPerRow(Mode.Auto)
.CardMinWidth(300)
.Selection(s => s.Mode(SingleMultipleOrNone.Multiple))
.SelectedCardKeys(new object[] { 4, 6 })
.SearchPanel(sp => sp.Visible(true))
.CardCover(cc => {
cc
.ImageExpr(new JS("cardCoverImageExpr"))
.AltExpr(new JS("cardCoverAltExpr"));
})
.Columns(c =>
{
c.Add().DataField("FullName");
c.Add().DataField("Position");
c.Add().DataField("Phone");
c.Add().DataField("Email");
})
)
<script>
function cardCoverImageExpr({ FullName }) {
return `@Url.Content("~/images/employees/new")/${FullName}.jpg`;
}
function cardCoverAltExpr({ FullName }) {
return `Photo of ${FullName}`;
}
function updateDisabledOptions() {
const cardView = $('#card-view').dxCardView('instance');
$("#show-checkboxes-mode").dxSelectBox('instance').option(
'disabled',
cardView.option('selection.mode') !== 'multiple',
);
$("#allow-select-all").dxCheckBox('instance').option(
'disabled',
cardView.option('selection.mode') !== 'multiple',
);
$("#select-all-mode").dxSelectBox('instance').option(
'disabled',
cardView.option('selection.mode') !== 'multiple' ||
!cardView.option('selection.allowSelectAll')
);
}
</script>
using Microsoft.AspNetCore.Mvc;
using DevExtreme.NETCore.Demos.Models.CardView.ColumnChooser;
using DevExtreme.NETCore.Demos.Models.CardView.ColumnHeaderFilter;
using DevExtreme.NETCore.Demos.Models.CardView.ColumnReordering;
using DevExtreme.NETCore.Demos.Models.CardView.DataValidation;
using DevExtreme.NETCore.Demos.Models.CardView.FilterPanel;
using DevExtreme.NETCore.Demos.Models.CardView.Overview;
using DevExtreme.NETCore.Demos.Models.CardView.PopupEditing;
using DevExtreme.NETCore.Demos.Models.CardView.SearchPanel;
using DevExtreme.NETCore.Demos.Models.CardView.Selection;
using DevExtreme.NETCore.Demos.Models.CardView.SimpleArray;
using DevExtreme.NETCore.Demos.Models.CardView.Sorting;
using DevExtreme.NETCore.Demos.Models.SampleData;
namespace DevExtreme.NETCore.Demos.Controllers {
public class CardViewController : Controller {
public ActionResult Selection() {
return View(SelectionSampleData.Employees);
}
}
}
.options {
margin-top: 20px;
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
}
.options-container {
display: flex;
flex-wrap: wrap;
align-items: center;
}
.caption {
font-size: 18px;
font-weight: 500;
}
.option {
margin: 10px;
width: fit-content;
}
.option > .dx-selectbox {
width: 150px;
display: inline-block;
vertical-align: middle;
}
.option > span {
margin-right: 10px;
}
Use the following properties to configure CardView selection:
- allowSelectAll
Allows users to select all or current page cards (based on selectAllMode). - selectAllMode
Specifies mode used to select all cards. Applies only if selection.allowSelectAll istrue
. - showCheckBoxesMode
Specifies when to display card selection checkboxes.