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Question

Resize an asp.net panel width based on a checkboxlist?

Answer 1

A:

You could set the panel width onload per javascript:

<script>
function resizePanel() {
            var panel = document.getElementById('Panel1');
            var checkBox = document.getElementById('CheckBoxList1')
            if (panel != null && checkBox != null)
                panel.style.width = checkBox.offsetWidth + "px";
}
</script>
</head>
<body onload="resizePanel()">
    <form id="form1" runat="server">
    <asp:Panel ID="Panel1" runat="server" BorderWidth="1" BorderColor="Silver">
    <asp:CheckBoxList ID="CheckBoxList1" Width="200px" runat="server">
    <asp:ListItem Text="Item 1" Value="1"></asp:ListItem>
    <asp:ListItem Text="Item 2" Value="2"></asp:ListItem>
    <asp:ListItem Text="Item 3" Value="3"></asp:ListItem>
    <asp:ListItem Text="Item 4" Value="4"></asp:ListItem>
    <asp:ListItem Text="Item 5" Value="5"></asp:ListItem>
    <asp:ListItem Text="Item 6" Value="6"></asp:ListItem>
    <asp:ListItem Text="Item 7" Value="7"></asp:ListItem>
    </asp:CheckBoxList>
    </asp:Panel>
    </form>
</body>
</html>

Tim Schmelter 2010-05-05 21:33:13

Thanks for the assistance. This is working for me, with the modification that I had to check the offsetWidth was greater than (say) 25 pixels. Otherwise, when I had no data in the checkboxlist, the offsetwidth was zero and my panel took up the entire screen in both IE and Firefox for some reason.

larryq 2010-05-06 22:43:09

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Resize an asp.net panel width based on a checkboxlist?

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