In Checkboxlist The index Of Selected Checkbox Is Change Each Time When I Select A Checkbox.

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i want to show in checkboxlist the selected checkbox index in a label each time when i select diffrent checkbox in checkboxlist. how can i do it?

Posted 15-Apr-14 0:45am

TCS54321

Updated 15-Apr-14 1:30am

v2

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[no name] 15-Apr-14 7:34am

What have you tried? What happened when you ran your code? What errors did you get?

TCS54321 18-Apr-14 3:59am

in my checkboxlist there are some classes like 1-b.tech(cse) 2-b.tech(it) 3-b.tech(ece) 4-b.tech(me) when i select when i select b.tech(ece) it give the correct classid of b.tech(ece) and then i select b.tech(me) it give the classid of b.tech(me) again if i select b.tech(it) or b.tech(cse) then it give right classid. basically it pick the first selected classid in cleckbox list. how can i pick the current selected classid on each selection?

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Peter Leow · Answer 1 · 2014-04-15T02:09:00

Use JavaScript, see example:

XML

<script type="text/javascript" language="javascript">
        function showCheckedBoxId() {
            var checkboxlist = document.getElementById('<%= CheckBoxList1.ClientID%>');
            var label = document.getElementById('<%= Label1.ClientID%>');
            label.innerHTML = "You have selected ";
            var checkBoxes = checkboxlist.getElementsByTagName("input");
            for (i = 0; i < checkBoxes.length; i++) {
                if (checkBoxes[i].checked) label.innerHTML = label.innerHTML + " " + checkBoxes[i].id;
            }
            return false;
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:CheckBoxList ID="CheckBoxList1" runat="server" onchange="return showCheckedBoxId()">
            <asp:ListItem>ASP.NET</asp:ListItem>
            <asp:ListItem>C#</asp:ListItem>
            <asp:ListItem>VB.NET</asp:ListItem>
            <asp:ListItem>PHP</asp:ListItem>
            <asp:ListItem>HTML</asp:ListItem>
        </asp:CheckBoxList>
        <br />
        <asp:Label ID="Label1" runat="server"></asp:Label></div>
    </form>