Select or Deselect All Rows with Select All Header Checkbox
The following example demonstrates how to select or deselect all rows in a Grid by checking the Select All column header of the template checkbox.
You can also select multiple rows by using the checkboxes and apply custom styling of the checkboxes.
<div id="grid"></div>
<button id="showSelection">Show selected IDs</button>
<script>
$(document).ready(function () {
//DataSource definition
var crudServiceBaseUrl = "https://demos.telerik.com/kendo-ui/service",
dataSource = new kendo.data.DataSource({
transport: {
read: {
url: crudServiceBaseUrl + "/Products",
dataType: "jsonp"
},
update: {
url: crudServiceBaseUrl + "/Products/Update",
dataType: "jsonp"
},
destroy: {
url: crudServiceBaseUrl + "/Products/Destroy",
dataType: "jsonp"
},
create: {
url: crudServiceBaseUrl + "/Products/Create",
dataType: "jsonp"
},
parameterMap: function (options, operation) {
if (operation !== "read" && options.models) {
return {
models: kendo.stringify(options.models)
};
}
}
},
batch: true,
pageSize: 20,
schema: {
model: {
id: "ProductID",
fields: {
ProductID: {
editable: false,
nullable: true
},
ProductName: {
validation: {
required: true
}
},
UnitPrice: {
type: "number",
validation: {
required: true,
min: 1
}
},
Discontinued: {
type: "boolean"
},
UnitsInStock: {
type: "number",
validation: {
min: 0,
required: true
}
}
}
}
}
});
//Grid definition
var grid = $("#grid").kendoGrid({
dataSource: dataSource,
pageable: true,
height: 430,
//define dataBound event handler
dataBound: onDataBound,
toolbar: ["create"],
columns: [
//define template column with checkbox and attach click event handler
{
title: 'Select All',
headerTemplate: "<input type='checkbox' id='header-chb' class='k-checkbox header-checkbox'><label class='k-checkbox-label' for='header-chb'></label>",
template: function (dataItem) {
return "<input type='checkbox' id='" + dataItem.ProductID + "' class='k-checkbox row-checkbox'><label class='k-checkbox-label' for='" + dataItem.ProductID + "'></label>";
},
width: 80
},
"ProductName", {
field: "UnitPrice",
title: "Unit Price",
format: "{0:c}",
width: "100px"
}, {
field: "UnitsInStock",
title: "Units In Stock",
width: "100px"
}, {
field: "Discontinued",
width: "100px"
}, {
command: ["edit", "destroy"],
title: " ",
width: "172px"
}
],
editable: "inline"
}).data("kendoGrid");
//bind click event to the checkbox
grid.table.on("click", ".row-checkbox", selectRow);
$('#header-chb').change(function (ev) {
var checked = ev.target.checked;
$('.row-checkbox').each(function (idx, item) {
if (checked) {
if (!($(item).closest('tr').is('.k-state-selected'))) {
$(item).click();
}
} else {
if ($(item).closest('tr').is('.k-state-selected')) {
$(item).click();
}
}
});
});
$("#showSelection").bind("click", function () {
var checked = [];
for (var i in checkedIds) {
if (checkedIds[i]) {
checked.push(i);
}
}
alert(checked);
});
});
var checkedIds = {};
//on click of the checkbox:
function selectRow() {
var checked = this.checked,
row = $(this).closest("tr"),
grid = $("#grid").data("kendoGrid"),
dataItem = grid.dataItem(row);
checkedIds[dataItem.id] = checked;
if (checked) {
//-select the row
row.addClass("k-state-selected");
var checkHeader = true;
$.each(grid.items(), function (index, item) {
if (!($(item).hasClass("k-state-selected"))) {
checkHeader = false;
}
});
$("#header-chb")[0].checked = checkHeader;
} else {
//-remove selection
row.removeClass("k-state-selected");
$("#header-chb")[0].checked = false;
}
}
//on dataBound event restore previous selected rows:
function onDataBound(e) {
var view = this.dataSource.view();
for (var i = 0; i < view.length; i++) {
if (checkedIds[view[i].id]) {
this.tbody.find("tr[data-uid='" + view[i].uid + "']")
.addClass("k-state-selected")
.find(".k-checkbox")
.attr("checked", "checked");
}
}
}
</script>
</body>