DTC textbox field validation?

[david7777777777]

I need to do field validation on a Textbox DTC. I'm assuming that JavaScript client-side validation won't work since these DTC's are server-side, right? Can someone give me a simple example of validating a textbox DTC please? My DTC is named txtDateReceived. I want to check to make sure the user does not enter any letters, but only numbers. Thanks.

 

[Metka]

You can do client side or server side validation. I prefer client side, becuse there's no server trip.

A simple example (you have one DTC textbox and one DTC button for saving):

<script language=JavaScript>
function thisPage_onbeforeserverevent(obj,evnt)
{
if (obj==&quot;btnSave&quot{
if (event==&quot;onclick&quot{
if (isNaN(document.thisForm.TextBox1.value)==true){
alert(&quot;Only numbers please.&quot;
document.thisForm.TextBox1.focus();
thisPage.cancelEvent=true;
}
}
}
}
</script>

isNaN (is Not a Number) is a JavaScript function that checks if the value is a number. Problems are possible if you're allowing decimal places and your decimal operator is not the dafault one, then your validation should be diffrent.
&quot;Defeat is not the worst of failures. Not to have tried is the true failure.&quot;
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