Hi Moondaddy,
As for this problem, I think Antoni's suggestion on use Radio button is
reasonable since the
<input type="radio".. > element is just design for single select items
while the
<input type="checkbox" ..> is not.
Also, we of course can implement such function on checkbox by using some
javascript. For example, we can register a "onclick" handler for each
checkbox and when a checkbox is checked, first uncheck all the other
checkboxes and then check this selected one again. Here is a simple demo
page:
==============aspx ======================
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>checkboxes</title>
<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
<meta content="Visual Basic .NET 7.1" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="
http://schemas.microsoft.com/intellisense/ie5"
name="vs_targetSchema">
<script language="javascript">
function SingleSelect(regex,current)
{
re = new RegExp(regex);
for(i = 0; i < document.forms[0].elements.length; i++) {
elm = document.forms[0].elements
;
if (elm.type == 'checkbox') {
if (re.test(elm.name)) {
elm.checked = false;
}
}
}
current.checked = true;
}
</script>
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<table width="100%" align="center">
<tr>
<td>
<br/>aaaa<input type="checkbox" id="chkOne" name="chkOne"
value="aaaa" checked onclick="SingleSelect('chk',this);" />
<br/>bbbb<input type="checkbox" id="chkTwo" name="chkTwo"
value="bbbb" onclick="SingleSelect('chk',this);" />
<br/>cccc<input type="checkbox" id="chkThree" name="chkThree"
value="cccc" onclick="SingleSelect('chk',this);" />
<br/>dddd<input type="checkbox" id="chkFour" name="chkFour"
value="dddd" onclick="SingleSelect('chk',this);" />
<br/>eeee<input type="checkbox" id="chkFive" name="chkFive"
value="eeee" onclick="SingleSelect('chk',this);" />
</td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td></td>
</tr>
</table>
</form>
</body>
</HTML>
====================================================
Hope helps. Thanks.
Regards,
Steven Cheng
Microsoft Online Support
Get Secure! www.microsoft.com/security
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