📄 demo_customvalidator.aspx

📁 W3Schools tutorial..web designing
💻 ASPX
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<html>
<body>

<form name="ctl00" method="post" action="demo_customvalidator.aspx" onsubmit="javascript:return WebForm_OnSubmit();" id="ctl00">
<div>
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKLTQzNjg3NTMyMWRkf9AeoW/t0YVJ2UnHprQ15hhSOKk=" />
</div>

<script type="text/javascript">
//<![CDATA[
var theForm = document.forms['ctl00'];
if (!theForm) {
    theForm = document.ctl00;
}
function __doPostBack(eventTarget, eventArgument) {
    if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
        theForm.__EVENTTARGET.value = eventTarget;
        theForm.__EVENTARGUMENT.value = eventArgument;
        theForm.submit();
    }
}
//]]>
</script>


<script src="../WebResource.axd@d=4_tD1fQpKNRAgETimjNH_g2&t=633385606641372605" type="text/javascript"></script>


<script src="../WebResource.axd@d=ZkG9XdC9c0XpqHQQuwpxZ5u3CDlcmfS00Rh1ymMa-Go1&t=633385606641372605" type="text/javascript"></script>
<script type="text/javascript">
//<![CDATA[
function WebForm_OnSubmit() {
if (typeof(ValidatorOnSubmit) == "function" && ValidatorOnSubmit() == false) return false;
return true;
}
//]]>
</script>

<span>Enter a username: </span>
<input name="txt1" type="text" id="txt1" />
<input type="submit" name="ctl02" value="Submit" onclick="javascript:WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions(&quot;ctl02&quot;, &quot;&quot;, true, &quot;&quot;, &quot;&quot;, false, false))" />
<br />
<span id="mess"></span>
<br />
<span id="ctl03" style="color:Red;visibility:hidden;">A username must be between 8 and 16 characters!</span>

<script type="text/javascript">
//<![CDATA[
var Page_Validators =  new Array(document.getElementById("ctl03"));
//]]>
</script>

<script type="text/javascript">
//<![CDATA[
var ctl03 = document.all ? document.all["ctl03"] : document.getElementById("ctl03");
ctl03.controltovalidate = "txt1";
ctl03.evaluationfunction = "CustomValidatorEvaluateIsValid";
//]]>
</script>

<div>

	<input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWAwKc4f6hBwKShty0BQKfwImNC5DpRcRGiOjeTK8eYzB9viNMzhiQ" />
</div>

<script type="text/javascript">
<!--
var Page_ValidationActive = false;
if (typeof(ValidatorOnLoad) == "function") {
    ValidatorOnLoad();
}

function ValidatorOnSubmit() {
    if (Page_ValidationActive) {
        return ValidatorCommonOnSubmit();
    }
    else {
        return true;
    }
}
// -->
</script>
        </form>

</body>
</html>
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