Hi Ric,

thanks for your reply. Basically you are using customeValidator and js to check user's data entry. I like it, this way I don't need to create js within a string in a class and register it. But I guess I still would need to do validation on the server just to be safe, in case js is not enable on the browser

Thanks again for the sample.

William

>I tend to do all the validation I can on the aspx page and include a js file with all the validation. For example I need to validate that the form field has been entered,format is a date format, and that the age is between 18 and 60. I am able to stuff the control when the validator function on the client is called.
>In the aspx page:
>

><input id="txtDOB" type="text" maxlength="10" style="WIDTH: 100px" name="txtDOB" runat="server">
><br>
><span style="FONT-SIZE: 7pt;FONT-FAMILY: arial">use mm/dd/yyyy as format<br>
><asp:RequiredFieldValidator runat="server" Display="Dynamic" ControlToValidate="txtDOB" ErrorMessage="DOB is required.<br>" ID="Requiredfieldvalidator2"></asp:RequiredFieldValidator>
><asp:RegularExpressionValidator runat="server" Display="Dynamic" ControlToValidate="txtDOB" ErrorMessage="DOB is required as mm/dd/yyyy.<br>" ID="RegEDOB" ValidationExpression="\d{2}\/\d{2}\/\d{4}"/>
><asp:CustomValidator ID="cvDOBDate" dateBox="txtDOB" ErrorMessage="Age is not in range (18 - 90).<br>" ClientValidationFunction="ValidateAge" EnableClientScript=True Display="Dynamic" runat=server/>
>      </span>
>

>
>And then this function on thye js include file:
>

>////////////////////////////////////////////////////////
>			function calcAgeYears( f ) {
>			  // Get entered values
>			   var now = new Date();
>			   // Generate date from input
>			   var xD = new Date(f);
>			   // Check generated date is OK
>			   if ( isNaN(xD.getDate()) ) {
>				 return 'Entered text is not valid';
>			   }
>			   // Get date components
>			   var  aY = xD.getFullYear();
>			   var  aM = xD.getMonth();
>			   var  aD = xD.getDate();
>			   // Calculate age
>			   aY  = now.getFullYear() - aY;
>			   aM  = now.getMonth() - aM;
>			   aD  = now.getDate() - aD;
>			   if ( aD < 0) {
>				 aD = now.getDate( now.setDate(aD) );
>				 aM--;
>			   }
>			   if ( aM < 0 ) {
>				 aM += 12;
>				 aY--;
>			   }
>			//   return aY + 'y ' + aM + 'm ' + aD + 'd';
>			   return aY ;
>			}
>/////////////////////////////////////////////////////////
>			function ValidateAge(source, arguments)
>			{
>			var comparisonToday= new Date();
>			var todaysDate= new Date(document.getElementById(source.dateBox).value);
>			var intDays;
>			if(calcAgeYears(todaysDate) < 18 || calcAgeYears(todaysDate)>90 )
>			{
>				arguments.IsValid = false;
>			}
>			else
>			{
>				arguments.IsValid = true;
>			}
>			}
>

>
>I just have a long js file with most of my validators...