Collapse all grid rows.
Examples
Sample
<button onclick="grid.expandAll()" class="gj-button-md">Expand All</button>
<button onclick="grid.collapseAll()" class="gj-button-md">Collapse All</button>
<br/><br/>
<table id="grid"></table>
<script>
var grid = $('#grid').grid({
dataSource: '/Players/Get',
detailTemplate: '<div style="text-align: left"><b>Place Of Birth:</b> {PlaceOfBirth}</div>',
columns: [ { field: 'ID', width: 56 }, { field: 'Name' }, { field: 'DateOfBirth', type: 'date' } ],
grouping: { groupBy: 'CountryName' },
});
</script>