String length validation in Masked text box

[Pantulu]

I am using the following mask for phone and zip code

@(Html.Kendo().MaskedTextBox().Name("phone_number").Mask("[phone]")

and my model is 
 [StringLength(10, MinimumLength = 10, ErrorMessageResourceName = "InvalidPhoneNumber", ErrorMessageResourceType = typeof(ErrorMessage), ErrorMessage = null)]
public string phone_number { get; set; }

I am using unobtrusive JS validation
This works fine and throws the validation error for numbers less that 10, but still persists the error message with all digits filled.

I tried setting the min length to 14(to include special characters within), but it never throws the error message by then.
Is there any workaround or is this a known bug ?

[Pantulu]

I found the fix
I had to remove the mvc string length validations and 

add the following to my html attribute

data_validmask_msg = "Invalid number"

use the following in my document.ready

        $(document).ready(function () {
            var container = $("form");
            kendo.init(container);
            container.kendoValidator({
                rules: {
                    validmask: function (input) {
                        if (input.is("[data-validmask-msg]") && input.val() != "") {
                            var maskedtextbox = input.data("kendoMaskedTextBox");
                            return maskedtextbox.value().indexOf(maskedtextbox.options.promptChar) === -1;
                        }
                        return true;
                    }
                }
            });
        });

[Dimo]

Hi Pantulu,

There are two things to consider in this scenario:

1. The MaskedTextBox by default returns and submits its value together with the mask.

2. You have defined a maximum length of 10 characters in the StringLength attribute configuration.

Apart from using custom validation, you have two other options:

- set UnMaskOnPost() to true (available in Q1 2015)
- set ClearPromptChar() to true (available in Q3 2014 SP1)

http://docs.telerik.com/kendo-ui/api/aspnet-mvc/Kendo.Mvc.UI.Fluent/MaskedTextBoxBuilder

Also, be aware of the widget's raw() client-side method.

http://docs.telerik.com/kendo-ui/api/javascript/ui/maskedtextbox#methods-raw

Regards,
Dimo
Telerik