invalid date in datepicker

[newbie]

Currently, if i enter an invalid date in raddatepicker like '019901' then it changes it to 01/01/99'
Can i give an invalid date message instead and have the user enter the date in the correct format only?

[Shinu]

Hello,

Try the following approach in order to show error message when typing invalid date in DatePicker.

ASPX:

<telerik:RadDatePicker ID="textBoxDOB" Skin="Web20" Culture="en-US" runat="server">
    <DateInput ClientEvents-OnError="OnError" runat="server">
    </DateInput>
</telerik:RadDatePicker>

JavaScript:

<script type="text/javascript">
    Telerik.Web.UI.RadDateInput.prototype.parseDate = function(value, baseDate)
    {
        if (new Date(value) != "NaN")
            return value;
    }
    function OnError(sender, args) {
        alert('Invalid date');
    }
</script>

-Shinu.

[newbie]

Hi Shinu,

This does not work for me.
I get a js error that 'Telerik.Web.UI.RadDateInput.prototype' is null or not an object'.

I am using the latest Telerik controls.
Can you give me a working example?

[Dimo]

Hello Anumeha,

The error is caused by the fact that the RadDatePicker client namespace has not been registered. Probably you are displaying the picker after an AJAX request. If so, you must execute the custom script after the AJAX request, not on initial load. Include the script in another fuction, e.g.


function executeAfterAJAX()
{
   if (typeof(Telerik.Web.UI.RadDateInput) != "undefined")
   {
       Telerik.Web.UI.RadDateInput.prototype.parseDate = function(value, baseDate)   
       {   
           if (new Date(value) != "NaN")   
               return value;
       }
    }
}


Kind regards,
Dimo
the Telerik team

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[newbie]

I am sorry if I am not getting this right.

So where should I call the function executeAfterAJAX() ?

[Dimo]

Hi Anumeha,

It depends on your AJAX implementation. For example, you can call the function in the OnResponseEnd handler of RadAjaxManager.

http://www.telerik.com/help/aspnet-ajax/ajxonresponseend.html

See also

http://www.telerik.com/help/aspnet-ajax/ajxcustomjavascript.html

Regards,
Dimo
the Telerik team

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Follow the status of features or bugs in PITS and vote for them to affect their priority.

[Howard]

WHY DON'T THESE EXPENSIVE CONTROLS WORK WITH THE .NET VALIDATORS?

[Maria Ilieva]

Hi Howard,

Can I kindly ask you to provide additional details for the issue you are facing with the integration between RadControls and the asp validators controls?

We do not have some general issues reported for such scenarios and we are not aware of such incompatibility.

You can check the online demos below that presents the proper behavior of such scenarios:
http://demos.telerik.com/aspnet-ajax/input/examples/common/validation/defaultcs.aspx
http://demos.telerik.com/aspnet-ajax/calendar/examples/datepicker/validation/defaultcs.aspx
http://demos.telerik.com/aspnet-ajax/calendar/examples/datetimepicker/validation/defaultcs.aspx
http://demos.telerik.com/aspnet-ajax/calendar/examples/monthyearpicker/validation/defaultcs.aspx

Regards,
Maria Ilieva
Telerik