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Tagged: change, clear, column, grid, initialize, jqxgrid, refresh

This topic contains 1 reply, has 2 voices, and was last updated by Dimitar 11 years ago.

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clear and re-intialize grid Posts

May 21, 2014 at 7:36 pm clear and re-intialize grid #54775

Participant

what is the best way to clear grid with columns and data.. and then re-initialize with different set of columns. but preserve events like cellClick and all..

i tried “destroy”.. but that removes the element.. and i have to re-register the events and all..

Thanks

May 22, 2014 at 5:39 am clear and re-intialize grid #54780

Dimitar

Participant

Hello jahnvi25,

In the following example, based on the demo Default Functionality, is shown how to change the columns of a grid but keep all other settings. Note that the new columns have also been defined in the source datafields.

<!DOCTYPE html>
<html lang="en">
<head>
    <link rel="stylesheet" href="../../jqwidgets/styles/jqx.base.css" type="text/css" />
    <script type="text/javascript" src="../../scripts/jquery-1.10.2.min.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxcore.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxdata.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxbuttons.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxscrollbar.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxmenu.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxcheckbox.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxlistbox.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxdropdownlist.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxgrid.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxgrid.sort.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxgrid.pager.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxgrid.selection.js"></script>
    <script type="text/javascript" src="../../jqwidgets/jqxgrid.edit.js"></script>
    <script type="text/javascript" src="../../scripts/demos.js"></script>
    <script type="text/javascript">
        $(document).ready(function () {
            var url = "../sampledata/products.xml";

            // prepare the data
            var source =
            {
                datatype: "xml",
                datafields: [
                    { name: 'ProductName', type: 'string' },
                    { name: 'QuantityPerUnit', type: 'int' },
                    { name: 'UnitPrice', type: 'float' },
                    { name: 'UnitsInStock', type: 'float' },
                    { name: 'Discontinued', type: 'bool' }
                ],
                root: "Products",
                record: "Product",
                id: 'ProductID',
                url: url
            };

            var cellsrenderer = function (row, columnfield, value, defaulthtml, columnproperties, rowdata) {
                if (value < 20) {
                    return '<span style="margin: 4px; float: ' + columnproperties.cellsalign + '; color: #ff0000;">' + value + '</span>';
                }
                else {
                    return '<span style="margin: 4px; float: ' + columnproperties.cellsalign + '; color: #008000;">' + value + '</span>';
                }
            }

            var dataAdapter = new $.jqx.dataAdapter(source, {
                downloadComplete: function (data, status, xhr) { },
                loadComplete: function (data) { },
                loadError: function (xhr, status, error) { }
            });

            // initialize jqxGrid
            $("#jqxgrid").jqxGrid(
            {
                width: 500,
                source: dataAdapter,
                pageable: true,
                autoheight: true,
                sortable: true,
                altrows: true,
                enabletooltips: true,
                editable: true,
                selectionmode: 'multiplecellsadvanced',
                columns: [
                  { text: 'Product Name', datafield: 'ProductName', width: "34%" },
                  { text: 'Units In Stock', datafield: 'UnitsInStock', cellsalign: 'right', cellsrenderer: cellsrenderer, width: "33%" },
                  { text: 'Discontinued', columntype: 'checkbox', datafield: 'Discontinued', width: "33%" }
                ]
            });

            $("#change").click(function () {
                $("#jqxgrid").jqxGrid(
                {
                    columns: [
                      { text: 'Quantity per Unit', datafield: 'QuantityPerUnit', cellsalign: 'right', align: 'right', width: "50%" },
                      { text: 'Unit Price', datafield: 'UnitPrice', align: 'right', cellsalign: 'right', cellsformat: 'c2', width: "50%" }
                    ]
                });
            });
        });
    </script>
</head>
<body class='default'>
    <div id='jqxWidget' style="font-size: 13px; font-family: Verdana; float: left;">
        <div id="jqxgrid">
        </div>
    </div>
    <button id="change">
        Change columns</button>
</body>
</html>

Best Regards,
Dimitar

jQWidgets team
http://www.jqwidgets.com/

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