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How to highlight controls on validation error

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Christoph asked on 26 Oct 2010, 08:35 AM

Dear Telerik Support,

when I enter an invalid value into one of your controls like IntegerTextBox or DatePicker, the control is highlighted in red. But when I do some custom validation on my view model (e.g. date begin is after date end) after a submit, I only get the validation message. The control itself is not highlighted.

My control at the aspx web site looks like this:

<%: Html.LabelFor(model => model.Startdate)%>
<%= Html.Telerik().DatePickerFor(model => model.Startdate) %>
<%: Html.ValidationMessageFor(model => model.Startdate, "*", new { Class = "field-validation-error star-error" })%>

and I do some custom validations like this in my controller:

if (ViewModel.Startdate != null && ViewModel.Enddate != null)
{
if (ViewModel.Startdate > ViewModel.Enddate)
ModelState.AddModelError("Startdate", <ErrorMessage>);
}

return View(ViewModel);

After that, the errors are displayed correctly, but the telerik controls are not highlighted in red. When I do the same for controls from Html namespace like Html.TextBox(), the controls are highlighted in red after the validation error is added to the ModelState.

Is there a way to highlight the controls after validation errors? Because I am using your controls and controls from Html namespace and the validation results should look the same for all controls.

Kind regards,

Christoph

11 Answers, 1 is accepted

answered on 16 Aug 2011, 12:29 AM

validation-error.jpg

i also need an answer for this question.

i have attached a screenshot of the problem. What i can see is when we enter en invalid value, telerik will put his own error validation class named "t-state-error". But if we just want to valide a required field, nothing happen on this field.

Is there a reason why we can't get the original behaviour of MVC3 who use the "input-validation-error" class when a field is not valid, whatever the validation is? It would be much more easy for everyone!

Check the screenshot!

answered on 22 Aug 2011, 03:17 PM

hi Telerik Support!

i know that you have the right to not answer all the questions on the forum but i really need to know what you are trying to do with the validation for your controls.

Is it a bug that your controls don't get the MVC standard class "input-validation-error" when there's an error on it?
or maybe you are replacing it with your own validation class "t-state-error"? if its the case, is it normal that we don't get this error class on an empty required field error?

since that a form can have basic input fields and also Telerik input fields, i think it would be a good idea to use the "input-validation-error" class on your controls. That way, we don't have to play with sometimes "t-state-error" and sometimes "input-validation-error"!

thank your for your reading!

alex