jQuery UI Widgets Forums Grid Delete all rows from the grid by button click

This topic contains 2 replies, has 2 voices, and was last updated by  kkasunperera 11 years, 5 months ago.

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  • Author

  • kkasunperera
    Member

    Hi

    I’m using the example in the demos “Create Update Delete” I want to delete all the rows at once. Below is my code.
    However in this way it does not delete all the rows , can you please see what is the wrong with my code?

    <html lang="en">
    <head>
    <title id='Description'>This example demostrates how we can manipulate data at client side. The Grid plugin provides you callback functions when you add, remove or update a row.
    </title>
    <link rel="stylesheet" href="jqwidgets/styles/jqx.base.css" type="text/css" />
    <script type="text/javascript" src="scripts/jquery-1.8.1.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.selection.js"></script>
    <script type="text/javascript" src="scripts/gettheme.js"></script>
    <script type="text/javascript">
    $(document).ready(function () {
    var theme = getTheme();
    // prepare the data
    var data = {};
    var firstNames =
    [
    "Andrew", "Nancy", "Shelley", "Regina", "Yoshi", "Antoni", "Mayumi", "Ian", "Peter", "Lars", "Petra", "Martin", "Sven", "Elio", "Beate", "Cheryl", "Michael", "Guylene"
    ];
    var lastNames =
    [
    "Fuller", "Davolio", "Burke", "Murphy", "Nagase", "Saavedra", "Ohno", "Devling", "Wilson", "Peterson", "Winkler", "Bein", "Petersen", "Rossi", "Vileid", "Saylor", "Bjorn", "Nodier"
    ];
    var productNames =
    [
    "Black Tea", "Green Tea", "Caffe Espresso", "Doubleshot Espresso", "Caffe Latte", "White Chocolate Mocha", "Cramel Latte", "Caffe Americano", "Cappuccino", "Espresso Truffle", "Espresso con Panna", "Peppermint Mocha Twist"
    ];
    var priceValues =
    [
    "2.25", "1.5", "3.0", "3.3", "4.5", "3.6", "3.8", "2.5", "5.0", "1.75", "3.25", "4.0"
    ];
    var generaterow = function (i) {
    var row = {};
    var productindex = Math.floor(Math.random() * productNames.length);
    var price = parseFloat(priceValues[productindex]);
    var quantity = 1 + Math.round(Math.random() * 10);
    row["firstname"] = firstNames[Math.floor(Math.random() * firstNames.length)];
    row["lastname"] = lastNames[Math.floor(Math.random() * lastNames.length)];
    row["productname"] = productNames[productindex];
    row["price"] = price;
    row["quantity"] = quantity;
    row["total"] = price * quantity;
    return row;
    }
    for (var i = 0; i < 10; i++) {
    var row = generaterow(i);
    data[i] = row;
    }
    var source =
    {
    localdata: data,
    datatype: "local",
    addrow: function (rowid, rowdata) {
    // synchronize with the server - send insert command
    },
    deleterow: function (rowid) {
    // synchronize with the server - send delete command
    },
    updaterow: function (rowid, newdata) {
    // synchronize with the server - send update command
    }
    };
    // initialize jqxGrid
    $("#jqxgrid").jqxGrid(
    {
    width: 500,
    height: 350,
    source: source,
    theme: theme,
    columns: [
    { text: 'First Name', datafield: 'firstname', width: 100 },
    { text: 'Last Name', datafield: 'lastname', width: 100 },
    { text: 'Product', datafield: 'productname', width: 180 },
    { text: 'Quantity', datafield: 'quantity', width: 80, cellsalign: 'right' },
    { text: 'Unit Price', datafield: 'price', width: 90, cellsalign: 'right', cellsformat: 'c2' },
    { text: 'Total', datafield: 'total', width: 100, cellsalign: 'right', cellsformat: 'c2' }
    ]
    });
    $("#deleterowbutton").jqxButton({ theme: theme });
    // delete rows.
    $("#deleterowbutton").bind('click', function () {
    var selectedrowindex = $("#jqxgrid").jqxGrid('getselectedrowindex');
    var rowscount = $("#jqxgrid").jqxGrid('getdatainformation').rowscount;
    for(var k=0;k<rowscount;k++){
    var id = $("#jqxgrid").jqxGrid('getrowid', k);
    $("#jqxgrid").jqxGrid('deleterow', id);
    }
    });
    });
    </script>
    </head>
    <body class='default'>
    <div id='jqxWidget' style="font-size: 13px; font-family: Verdana; float: left;">
    <div style="float: left;" id="jqxgrid">
    </div>
    <div style="margin-left: 10px; float: left;">
    <div style="margin-top: 10px;">
    <input id="deleterowbutton" type="button" value="Delete Selected Row" />
    </div>
    </div>
    </div>
    </body>
    </html>

    Dimitar
    Participant

    Hello kkasunperera,

    For clearing the grid’s contents, please use the clear method:

    $('#grid').jqxGrid('clear');

    Your code would not work because the ids of all the rows are changed when one of them is deleted.

    Best Regards,
    Dimitar

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


    kkasunperera
    Member

    Thanks Dimitar

    Sorry It is actually in the API, I didn’t notice that previously

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