Hide a server control on selected index change of dropdown

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Hi All,

I want to change visibility of a server control on selection of dropdown value accordingly using java script.

Please help me..

Posted 27-Nov-13 22:46pm

Rock O

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Karthik_Mahalingam · Answer 1 · 2013-11-27T23:16:00

Hi
Try this code sample....

XML

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script type="text/javascript">
        var change = function (ddl) {
            var value = ddl.value;
            var btn = document.getElementById('btn');
            var chk = document.getElementById('chk');
            var lbl = document.getElementById('lbl');
            var rdb = document.getElementById('rdb');


            if (value == 'button')
                btn.style.visibility = 'hidden';
            if (value == 'checkbox')
                chk.style.visibility = 'hidden';
            if (value == 'label')
                lbl.style.visibility = 'hidden';
            if (value == 'radiobutton')
                rdb.style.visibility = 'hidden';
            if (value == 'All') {
                btn.style.visibility = 'visible';
                chk.style.visibility = 'visible';
                lbl.style.visibility = 'visible';
                rdb.style.visibility = 'visible';
            }
        }

    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        visibility ::
        <asp:DropDownList onchange="change(this)" ID="ddl" runat="server">
            <asp:ListItem Text="All" />
            <asp:ListItem Text="button" />
            <asp:ListItem Text="checkbox" />
            <asp:ListItem Text="label" />
            <asp:ListItem Text="radiobutton" />
        </asp:DropDownList>
        <br />
        <br />
        <asp:CheckBox ID="chk" runat="server" Text="" /><br />
        <br />
        <asp:Button ID="btn" runat="server" Text="button" /><br />
        <br />
        <asp:Label ID="lbl" runat="server" Text="label" /><br />
        <br />
        <asp:RadioButton ID="rdb" runat="server" Text="" />
        <br />
    </div>
    </form>
</body>
</html>

$*Developer - Vaibhav*$ · Answer 2 · 2013-11-27T23:10:00

Solution 1

Write this code in .cs file on page load

ddlName.Attributes.Add("onchange", "HideSearchResults();");

javascript code :

C#

function HideSearchResults()
    {
       //write your code here base on codition hide the sercer controls
       //eg. $('.myControl').hide();
    }

Posted 27-Nov-13 23:10pm

$*Developer - Vaibhav*$