Following javascript can be used to validate numerical values for a textbox. This validates numbers without decimal points. If you want to validate decimals and thousand separators as well , you'll have to change the regex and call another javascript onblur event to validate the thousand separator and decimal point. I will post the javascript for this soon.
<script type="text/javascript">
function validateOnlyNumber(evt) {
var theEvent = evt || window.event;
var key = theEvent.keyCode || theEvent.which;
key = String.fromCharCode(key);
var regex = /^\s*\d+\s*$/;
if (!regex.test(key)) {
theEvent.returnValue = false;
if (theEvent.preventDefault) theEvent.preventDefault();
}
}
function checkNumbers() {
var ValidChars = /^\s*\d+\s*$/;
var pasteData = window.clipboardData.getData("Text");
if (ValidChars.test(pasteData))
return true;
else {
return false;
}
}
</script>
Call the functions as follows
<asp:TextBox ID="txtSearch" runat="server" onpaste="return checkNumbers()" onkeypress='validateOnlyNumber(event)'></asp:TextBox>
Cheers
Samitha
