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Implement secure ASP.NET MVC applications

, 21 Jul 2014
This article discusses various aspects of ASP.NET MVC security and shows some tips to implement these elements in your applications.
SecurityFilters.zip
SecurityFilters
bin
AntiXSSLibrary.dll
FluentSecurity.dll
HtmlSanitizationLibrary.dll
SecurityFilters.dll
Content
themes
base
images
ui-bg_flat_0_aaaaaa_40x100.png
ui-bg_flat_75_ffffff_40x100.png
ui-bg_glass_55_fbf9ee_1x400.png
ui-bg_glass_65_ffffff_1x400.png
ui-bg_glass_75_dadada_1x400.png
ui-bg_glass_75_e6e6e6_1x400.png
ui-bg_glass_95_fef1ec_1x400.png
ui-bg_highlight-soft_75_cccccc_1x100.png
ui-icons_222222_256x240.png
ui-icons_2e83ff_256x240.png
ui-icons_454545_256x240.png
ui-icons_888888_256x240.png
ui-icons_cd0a0a_256x240.png
Controllers
Services
Global.asax
lib
AntiXSSLibrary.dll
FluentSecurity.dll
HtmlSanitizationLibrary.dll
Models
obj
Debug
DesignTimeResolveAssemblyReferences.cache
DesignTimeResolveAssemblyReferencesInput.cache
ResolveAssemblyReference.cache
SecurityFilters.dll
TempPE
Properties
Scripts
SecurityFilters.csproj.user
Views
Admin
Public
Registered
Shared
//!----------------------------------------------------------
//! Copyright (C) Microsoft Corporation. All rights reserved.
//!----------------------------------------------------------
//! MicrosoftMvcValidation.js


Type.registerNamespace('Sys.Mvc');

////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.Validation

Sys.Mvc.$create_Validation = function Sys_Mvc_Validation() { return {}; }


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.JsonValidationField

Sys.Mvc.$create_JsonValidationField = function Sys_Mvc_JsonValidationField() { return {}; }


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.JsonValidationOptions

Sys.Mvc.$create_JsonValidationOptions = function Sys_Mvc_JsonValidationOptions() { return {}; }


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.JsonValidationRule

Sys.Mvc.$create_JsonValidationRule = function Sys_Mvc_JsonValidationRule() { return {}; }


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.ValidationContext

Sys.Mvc.$create_ValidationContext = function Sys_Mvc_ValidationContext() { return {}; }


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.NumberValidator

Sys.Mvc.NumberValidator = function Sys_Mvc_NumberValidator() {
}
Sys.Mvc.NumberValidator.create = function Sys_Mvc_NumberValidator$create(rule) {
    /// <param name="rule" type="Sys.Mvc.JsonValidationRule">
    /// </param>
    /// <returns type="Sys.Mvc.Validator"></returns>
    return Function.createDelegate(new Sys.Mvc.NumberValidator(), new Sys.Mvc.NumberValidator().validate);
}
Sys.Mvc.NumberValidator.prototype = {
    
    validate: function Sys_Mvc_NumberValidator$validate(value, context) {
        /// <param name="value" type="String">
        /// </param>
        /// <param name="context" type="Sys.Mvc.ValidationContext">
        /// </param>
        /// <returns type="Object"></returns>
        if (Sys.Mvc._validationUtil.stringIsNullOrEmpty(value)) {
            return true;
        }
        var n = Number.parseLocale(value);
        return (!isNaN(n));
    }
}


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.FormContext

Sys.Mvc.FormContext = function Sys_Mvc_FormContext(formElement, validationSummaryElement) {
    /// <param name="formElement" type="Object" domElement="true">
    /// </param>
    /// <param name="validationSummaryElement" type="Object" domElement="true">
    /// </param>
    /// <field name="_validationSummaryErrorCss" type="String" static="true">
    /// </field>
    /// <field name="_validationSummaryValidCss" type="String" static="true">
    /// </field>
    /// <field name="_formValidationTag" type="String" static="true">
    /// </field>
    /// <field name="_onClickHandler" type="Sys.UI.DomEventHandler">
    /// </field>
    /// <field name="_onSubmitHandler" type="Sys.UI.DomEventHandler">
    /// </field>
    /// <field name="_errors" type="Array">
    /// </field>
    /// <field name="_submitButtonClicked" type="Object" domElement="true">
    /// </field>
    /// <field name="_validationSummaryElement" type="Object" domElement="true">
    /// </field>
    /// <field name="_validationSummaryULElement" type="Object" domElement="true">
    /// </field>
    /// <field name="fields" type="Array" elementType="FieldContext">
    /// </field>
    /// <field name="_formElement" type="Object" domElement="true">
    /// </field>
    /// <field name="replaceValidationSummary" type="Boolean">
    /// </field>
    this._errors = [];
    this.fields = new Array(0);
    this._formElement = formElement;
    this._validationSummaryElement = validationSummaryElement;
    formElement[Sys.Mvc.FormContext._formValidationTag] = this;
    if (validationSummaryElement) {
        var ulElements = validationSummaryElement.getElementsByTagName('ul');
        if (ulElements.length > 0) {
            this._validationSummaryULElement = ulElements[0];
        }
    }
    this._onClickHandler = Function.createDelegate(this, this._form_OnClick);
    this._onSubmitHandler = Function.createDelegate(this, this._form_OnSubmit);
}
Sys.Mvc.FormContext._Application_Load = function Sys_Mvc_FormContext$_Application_Load() {
    var allFormOptions = window.mvcClientValidationMetadata;
    if (allFormOptions) {
        while (allFormOptions.length > 0) {
            var thisFormOptions = allFormOptions.pop();
            Sys.Mvc.FormContext._parseJsonOptions(thisFormOptions);
        }
    }
}
Sys.Mvc.FormContext._getFormElementsWithName = function Sys_Mvc_FormContext$_getFormElementsWithName(formElement, name) {
    /// <param name="formElement" type="Object" domElement="true">
    /// </param>
    /// <param name="name" type="String">
    /// </param>
    /// <returns type="Array" elementType="Object" elementDomElement="true"></returns>
    var allElementsWithNameInForm = [];
    var allElementsWithName = document.getElementsByName(name);
    for (var i = 0; i < allElementsWithName.length; i++) {
        var thisElement = allElementsWithName[i];
        if (Sys.Mvc.FormContext._isElementInHierarchy(formElement, thisElement)) {
            Array.add(allElementsWithNameInForm, thisElement);
        }
    }
    return allElementsWithNameInForm;
}
Sys.Mvc.FormContext.getValidationForForm = function Sys_Mvc_FormContext$getValidationForForm(formElement) {
    /// <param name="formElement" type="Object" domElement="true">
    /// </param>
    /// <returns type="Sys.Mvc.FormContext"></returns>
    return formElement[Sys.Mvc.FormContext._formValidationTag];
}
Sys.Mvc.FormContext._isElementInHierarchy = function Sys_Mvc_FormContext$_isElementInHierarchy(parent, child) {
    /// <param name="parent" type="Object" domElement="true">
    /// </param>
    /// <param name="child" type="Object" domElement="true">
    /// </param>
    /// <returns type="Boolean"></returns>
    while (child) {
        if (parent === child) {
            return true;
        }
        child = child.parentNode;
    }
    return false;
}
Sys.Mvc.FormContext._parseJsonOptions = function Sys_Mvc_FormContext$_parseJsonOptions(options) {
    /// <param name="options" type="Sys.Mvc.JsonValidationOptions">
    /// </param>
    /// <returns type="Sys.Mvc.FormContext"></returns>
    var formElement = $get(options.FormId);
    var validationSummaryElement = (!Sys.Mvc._validationUtil.stringIsNullOrEmpty(options.ValidationSummaryId)) ? $get(options.ValidationSummaryId) : null;
    var formContext = new Sys.Mvc.FormContext(formElement, validationSummaryElement);
    formContext.enableDynamicValidation();
    formContext.replaceValidationSummary = options.ReplaceValidationSummary;
    for (var i = 0; i < options.Fields.length; i++) {
        var field = options.Fields[i];
        var fieldElements = Sys.Mvc.FormContext._getFormElementsWithName(formElement, field.FieldName);
        var validationMessageElement = (!Sys.Mvc._validationUtil.stringIsNullOrEmpty(field.ValidationMessageId)) ? $get(field.ValidationMessageId) : null;
        var fieldContext = new Sys.Mvc.FieldContext(formContext);
        Array.addRange(fieldContext.elements, fieldElements);
        fieldContext.validationMessageElement = validationMessageElement;
        fieldContext.replaceValidationMessageContents = field.ReplaceValidationMessageContents;
        for (var j = 0; j < field.ValidationRules.length; j++) {
            var rule = field.ValidationRules[j];
            var validator = Sys.Mvc.ValidatorRegistry.getValidator(rule);
            if (validator) {
                var validation = Sys.Mvc.$create_Validation();
                validation.fieldErrorMessage = rule.ErrorMessage;
                validation.validator = validator;
                Array.add(fieldContext.validations, validation);
            }
        }
        fieldContext.enableDynamicValidation();
        Array.add(formContext.fields, fieldContext);
    }
    var registeredValidatorCallbacks = formElement.validationCallbacks;
    if (!registeredValidatorCallbacks) {
        registeredValidatorCallbacks = [];
        formElement.validationCallbacks = registeredValidatorCallbacks;
    }
    registeredValidatorCallbacks.push(Function.createDelegate(null, function() {
        return Sys.Mvc._validationUtil.arrayIsNullOrEmpty(formContext.validate('submit'));
    }));
    return formContext;
}
Sys.Mvc.FormContext.prototype = {
    _onClickHandler: null,
    _onSubmitHandler: null,
    _submitButtonClicked: null,
    _validationSummaryElement: null,
    _validationSummaryULElement: null,
    _formElement: null,
    replaceValidationSummary: false,
    
    addError: function Sys_Mvc_FormContext$addError(message) {
        /// <param name="message" type="String">
        /// </param>
        this.addErrors([ message ]);
    },
    
    addErrors: function Sys_Mvc_FormContext$addErrors(messages) {
        /// <param name="messages" type="Array" elementType="String">
        /// </param>
        if (!Sys.Mvc._validationUtil.arrayIsNullOrEmpty(messages)) {
            Array.addRange(this._errors, messages);
            this._onErrorCountChanged();
        }
    },
    
    clearErrors: function Sys_Mvc_FormContext$clearErrors() {
        Array.clear(this._errors);
        this._onErrorCountChanged();
    },
    
    _displayError: function Sys_Mvc_FormContext$_displayError() {
        if (this._validationSummaryElement) {
            if (this._validationSummaryULElement) {
                Sys.Mvc._validationUtil.removeAllChildren(this._validationSummaryULElement);
                for (var i = 0; i < this._errors.length; i++) {
                    var liElement = document.createElement('li');
                    Sys.Mvc._validationUtil.setInnerText(liElement, this._errors[i]);
                    this._validationSummaryULElement.appendChild(liElement);
                }
            }
            Sys.UI.DomElement.removeCssClass(this._validationSummaryElement, Sys.Mvc.FormContext._validationSummaryValidCss);
            Sys.UI.DomElement.addCssClass(this._validationSummaryElement, Sys.Mvc.FormContext._validationSummaryErrorCss);
        }
    },
    
    _displaySuccess: function Sys_Mvc_FormContext$_displaySuccess() {
        var validationSummaryElement = this._validationSummaryElement;
        if (validationSummaryElement) {
            var validationSummaryULElement = this._validationSummaryULElement;
            if (validationSummaryULElement) {
                validationSummaryULElement.innerHTML = '';
            }
            Sys.UI.DomElement.removeCssClass(validationSummaryElement, Sys.Mvc.FormContext._validationSummaryErrorCss);
            Sys.UI.DomElement.addCssClass(validationSummaryElement, Sys.Mvc.FormContext._validationSummaryValidCss);
        }
    },
    
    enableDynamicValidation: function Sys_Mvc_FormContext$enableDynamicValidation() {
        Sys.UI.DomEvent.addHandler(this._formElement, 'click', this._onClickHandler);
        Sys.UI.DomEvent.addHandler(this._formElement, 'submit', this._onSubmitHandler);
    },
    
    _findSubmitButton: function Sys_Mvc_FormContext$_findSubmitButton(element) {
        /// <param name="element" type="Object" domElement="true">
        /// </param>
        /// <returns type="Object" domElement="true"></returns>
        if (element.disabled) {
            return null;
        }
        var tagName = element.tagName.toUpperCase();
        var inputElement = element;
        if (tagName === 'INPUT') {
            var type = inputElement.type;
            if (type === 'submit' || type === 'image') {
                return inputElement;
            }
        }
        else if ((tagName === 'BUTTON') && (inputElement.type === 'submit')) {
            return inputElement;
        }
        return null;
    },
    
    _form_OnClick: function Sys_Mvc_FormContext$_form_OnClick(e) {
        /// <param name="e" type="Sys.UI.DomEvent">
        /// </param>
        this._submitButtonClicked = this._findSubmitButton(e.target);
    },
    
    _form_OnSubmit: function Sys_Mvc_FormContext$_form_OnSubmit(e) {
        /// <param name="e" type="Sys.UI.DomEvent">
        /// </param>
        var form = e.target;
        var submitButton = this._submitButtonClicked;
        if (submitButton && submitButton.disableValidation) {
            return;
        }
        var errorMessages = this.validate('submit');
        if (!Sys.Mvc._validationUtil.arrayIsNullOrEmpty(errorMessages)) {
            e.preventDefault();
        }
    },
    
    _onErrorCountChanged: function Sys_Mvc_FormContext$_onErrorCountChanged() {
        if (!this._errors.length) {
            this._displaySuccess();
        }
        else {
            this._displayError();
        }
    },
    
    validate: function Sys_Mvc_FormContext$validate(eventName) {
        /// <param name="eventName" type="String">
        /// </param>
        /// <returns type="Array" elementType="String"></returns>
        var fields = this.fields;
        var errors = [];
        for (var i = 0; i < fields.length; i++) {
            var field = fields[i];
            if (!field.elements[0].disabled) {
                var thisErrors = field.validate(eventName);
                if (thisErrors) {
                    Array.addRange(errors, thisErrors);
                }
            }
        }
        if (this.replaceValidationSummary) {
            this.clearErrors();
            this.addErrors(errors);
        }
        return errors;
    }
}


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.FieldContext

Sys.Mvc.FieldContext = function Sys_Mvc_FieldContext(formContext) {
    /// <param name="formContext" type="Sys.Mvc.FormContext">
    /// </param>
    /// <field name="_hasTextChangedTag" type="String" static="true">
    /// </field>
    /// <field name="_hasValidationFiredTag" type="String" static="true">
    /// </field>
    /// <field name="_inputElementErrorCss" type="String" static="true">
    /// </field>
    /// <field name="_inputElementValidCss" type="String" static="true">
    /// </field>
    /// <field name="_validationMessageErrorCss" type="String" static="true">
    /// </field>
    /// <field name="_validationMessageValidCss" type="String" static="true">
    /// </field>
    /// <field name="_onBlurHandler" type="Sys.UI.DomEventHandler">
    /// </field>
    /// <field name="_onChangeHandler" type="Sys.UI.DomEventHandler">
    /// </field>
    /// <field name="_onInputHandler" type="Sys.UI.DomEventHandler">
    /// </field>
    /// <field name="_onPropertyChangeHandler" type="Sys.UI.DomEventHandler">
    /// </field>
    /// <field name="_errors" type="Array">
    /// </field>
    /// <field name="defaultErrorMessage" type="String">
    /// </field>
    /// <field name="elements" type="Array" elementType="Object" elementDomElement="true">
    /// </field>
    /// <field name="formContext" type="Sys.Mvc.FormContext">
    /// </field>
    /// <field name="replaceValidationMessageContents" type="Boolean">
    /// </field>
    /// <field name="validationMessageElement" type="Object" domElement="true">
    /// </field>
    /// <field name="validations" type="Array" elementType="Validation">
    /// </field>
    this._errors = [];
    this.elements = new Array(0);
    this.validations = new Array(0);
    this.formContext = formContext;
    this._onBlurHandler = Function.createDelegate(this, this._element_OnBlur);
    this._onChangeHandler = Function.createDelegate(this, this._element_OnChange);
    this._onInputHandler = Function.createDelegate(this, this._element_OnInput);
    this._onPropertyChangeHandler = Function.createDelegate(this, this._element_OnPropertyChange);
}
Sys.Mvc.FieldContext.prototype = {
    _onBlurHandler: null,
    _onChangeHandler: null,
    _onInputHandler: null,
    _onPropertyChangeHandler: null,
    defaultErrorMessage: null,
    formContext: null,
    replaceValidationMessageContents: false,
    validationMessageElement: null,
    
    addError: function Sys_Mvc_FieldContext$addError(message) {
        /// <param name="message" type="String">
        /// </param>
        this.addErrors([ message ]);
    },
    
    addErrors: function Sys_Mvc_FieldContext$addErrors(messages) {
        /// <param name="messages" type="Array" elementType="String">
        /// </param>
        if (!Sys.Mvc._validationUtil.arrayIsNullOrEmpty(messages)) {
            Array.addRange(this._errors, messages);
            this._onErrorCountChanged();
        }
    },
    
    clearErrors: function Sys_Mvc_FieldContext$clearErrors() {
        Array.clear(this._errors);
        this._onErrorCountChanged();
    },
    
    _displayError: function Sys_Mvc_FieldContext$_displayError() {
        var validationMessageElement = this.validationMessageElement;
        if (validationMessageElement) {
            if (this.replaceValidationMessageContents) {
                Sys.Mvc._validationUtil.setInnerText(validationMessageElement, this._errors[0]);
            }
            Sys.UI.DomElement.removeCssClass(validationMessageElement, Sys.Mvc.FieldContext._validationMessageValidCss);
            Sys.UI.DomElement.addCssClass(validationMessageElement, Sys.Mvc.FieldContext._validationMessageErrorCss);
        }
        var elements = this.elements;
        for (var i = 0; i < elements.length; i++) {
            var element = elements[i];
            Sys.UI.DomElement.removeCssClass(element, Sys.Mvc.FieldContext._inputElementValidCss);
            Sys.UI.DomElement.addCssClass(element, Sys.Mvc.FieldContext._inputElementErrorCss);
        }
    },
    
    _displaySuccess: function Sys_Mvc_FieldContext$_displaySuccess() {
        var validationMessageElement = this.validationMessageElement;
        if (validationMessageElement) {
            if (this.replaceValidationMessageContents) {
                Sys.Mvc._validationUtil.setInnerText(validationMessageElement, '');
            }
            Sys.UI.DomElement.removeCssClass(validationMessageElement, Sys.Mvc.FieldContext._validationMessageErrorCss);
            Sys.UI.DomElement.addCssClass(validationMessageElement, Sys.Mvc.FieldContext._validationMessageValidCss);
        }
        var elements = this.elements;
        for (var i = 0; i < elements.length; i++) {
            var element = elements[i];
            Sys.UI.DomElement.removeCssClass(element, Sys.Mvc.FieldContext._inputElementErrorCss);
            Sys.UI.DomElement.addCssClass(element, Sys.Mvc.FieldContext._inputElementValidCss);
        }
    },
    
    _element_OnBlur: function Sys_Mvc_FieldContext$_element_OnBlur(e) {
        /// <param name="e" type="Sys.UI.DomEvent">
        /// </param>
        if (e.target[Sys.Mvc.FieldContext._hasTextChangedTag] || e.target[Sys.Mvc.FieldContext._hasValidationFiredTag]) {
            this.validate('blur');
        }
    },
    
    _element_OnChange: function Sys_Mvc_FieldContext$_element_OnChange(e) {
        /// <param name="e" type="Sys.UI.DomEvent">
        /// </param>
        e.target[Sys.Mvc.FieldContext._hasTextChangedTag] = true;
    },
    
    _element_OnInput: function Sys_Mvc_FieldContext$_element_OnInput(e) {
        /// <param name="e" type="Sys.UI.DomEvent">
        /// </param>
        e.target[Sys.Mvc.FieldContext._hasTextChangedTag] = true;
        if (e.target[Sys.Mvc.FieldContext._hasValidationFiredTag]) {
            this.validate('input');
        }
    },
    
    _element_OnPropertyChange: function Sys_Mvc_FieldContext$_element_OnPropertyChange(e) {
        /// <param name="e" type="Sys.UI.DomEvent">
        /// </param>
        if (e.rawEvent.propertyName === 'value') {
            e.target[Sys.Mvc.FieldContext._hasTextChangedTag] = true;
            if (e.target[Sys.Mvc.FieldContext._hasValidationFiredTag]) {
                this.validate('input');
            }
        }
    },
    
    enableDynamicValidation: function Sys_Mvc_FieldContext$enableDynamicValidation() {
        var elements = this.elements;
        for (var i = 0; i < elements.length; i++) {
            var element = elements[i];
            if (Sys.Mvc._validationUtil.elementSupportsEvent(element, 'onpropertychange')) {
                var compatMode = document.documentMode;
                if (compatMode && compatMode >= 8) {
                    Sys.UI.DomEvent.addHandler(element, 'propertychange', this._onPropertyChangeHandler);
                }
            }
            else {
                Sys.UI.DomEvent.addHandler(element, 'input', this._onInputHandler);
            }
            Sys.UI.DomEvent.addHandler(element, 'change', this._onChangeHandler);
            Sys.UI.DomEvent.addHandler(element, 'blur', this._onBlurHandler);
        }
    },
    
    _getErrorString: function Sys_Mvc_FieldContext$_getErrorString(validatorReturnValue, fieldErrorMessage) {
        /// <param name="validatorReturnValue" type="Object">
        /// </param>
        /// <param name="fieldErrorMessage" type="String">
        /// </param>
        /// <returns type="String"></returns>
        var fallbackErrorMessage = fieldErrorMessage || this.defaultErrorMessage;
        if (Boolean.isInstanceOfType(validatorReturnValue)) {
            return (validatorReturnValue) ? null : fallbackErrorMessage;
        }
        if (String.isInstanceOfType(validatorReturnValue)) {
            return ((validatorReturnValue).length) ? validatorReturnValue : fallbackErrorMessage;
        }
        return null;
    },
    
    _getStringValue: function Sys_Mvc_FieldContext$_getStringValue() {
        /// <returns type="String"></returns>
        var elements = this.elements;
        return (elements.length > 0) ? elements[0].value : null;
    },
    
    _markValidationFired: function Sys_Mvc_FieldContext$_markValidationFired() {
        var elements = this.elements;
        for (var i = 0; i < elements.length; i++) {
            var element = elements[i];
            element[Sys.Mvc.FieldContext._hasValidationFiredTag] = true;
        }
    },
    
    _onErrorCountChanged: function Sys_Mvc_FieldContext$_onErrorCountChanged() {
        if (!this._errors.length) {
            this._displaySuccess();
        }
        else {
            this._displayError();
        }
    },
    
    validate: function Sys_Mvc_FieldContext$validate(eventName) {
        /// <param name="eventName" type="String">
        /// </param>
        /// <returns type="Array" elementType="String"></returns>
        var validations = this.validations;
        var errors = [];
        var value = this._getStringValue();
        for (var i = 0; i < validations.length; i++) {
            var validation = validations[i];
            var context = Sys.Mvc.$create_ValidationContext();
            context.eventName = eventName;
            context.fieldContext = this;
            context.validation = validation;
            var retVal = validation.validator(value, context);
            var errorMessage = this._getErrorString(retVal, validation.fieldErrorMessage);
            if (!Sys.Mvc._validationUtil.stringIsNullOrEmpty(errorMessage)) {
                Array.add(errors, errorMessage);
            }
        }
        this._markValidationFired();
        this.clearErrors();
        this.addErrors(errors);
        return errors;
    }
}


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.RangeValidator

Sys.Mvc.RangeValidator = function Sys_Mvc_RangeValidator(minimum, maximum) {
    /// <param name="minimum" type="Number">
    /// </param>
    /// <param name="maximum" type="Number">
    /// </param>
    /// <field name="_minimum" type="Number">
    /// </field>
    /// <field name="_maximum" type="Number">
    /// </field>
    this._minimum = minimum;
    this._maximum = maximum;
}
Sys.Mvc.RangeValidator.create = function Sys_Mvc_RangeValidator$create(rule) {
    /// <param name="rule" type="Sys.Mvc.JsonValidationRule">
    /// </param>
    /// <returns type="Sys.Mvc.Validator"></returns>
    var min = rule.ValidationParameters['min'];
    var max = rule.ValidationParameters['max'];
    return Function.createDelegate(new Sys.Mvc.RangeValidator(min, max), new Sys.Mvc.RangeValidator(min, max).validate);
}
Sys.Mvc.RangeValidator.prototype = {
    _minimum: null,
    _maximum: null,
    
    validate: function Sys_Mvc_RangeValidator$validate(value, context) {
        /// <param name="value" type="String">
        /// </param>
        /// <param name="context" type="Sys.Mvc.ValidationContext">
        /// </param>
        /// <returns type="Object"></returns>
        if (Sys.Mvc._validationUtil.stringIsNullOrEmpty(value)) {
            return true;
        }
        var n = Number.parseLocale(value);
        return (!isNaN(n) && this._minimum <= n && n <= this._maximum);
    }
}


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.RegularExpressionValidator

Sys.Mvc.RegularExpressionValidator = function Sys_Mvc_RegularExpressionValidator(pattern) {
    /// <param name="pattern" type="String">
    /// </param>
    /// <field name="_pattern" type="String">
    /// </field>
    this._pattern = pattern;
}
Sys.Mvc.RegularExpressionValidator.create = function Sys_Mvc_RegularExpressionValidator$create(rule) {
    /// <param name="rule" type="Sys.Mvc.JsonValidationRule">
    /// </param>
    /// <returns type="Sys.Mvc.Validator"></returns>
    var pattern = rule.ValidationParameters['pattern'];
    return Function.createDelegate(new Sys.Mvc.RegularExpressionValidator(pattern), new Sys.Mvc.RegularExpressionValidator(pattern).validate);
}
Sys.Mvc.RegularExpressionValidator.prototype = {
    _pattern: null,
    
    validate: function Sys_Mvc_RegularExpressionValidator$validate(value, context) {
        /// <param name="value" type="String">
        /// </param>
        /// <param name="context" type="Sys.Mvc.ValidationContext">
        /// </param>
        /// <returns type="Object"></returns>
        if (Sys.Mvc._validationUtil.stringIsNullOrEmpty(value)) {
            return true;
        }
        var regExp = new RegExp(this._pattern);
        var matches = regExp.exec(value);
        return (!Sys.Mvc._validationUtil.arrayIsNullOrEmpty(matches) && matches[0].length === value.length);
    }
}


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.RequiredValidator

Sys.Mvc.RequiredValidator = function Sys_Mvc_RequiredValidator() {
}
Sys.Mvc.RequiredValidator.create = function Sys_Mvc_RequiredValidator$create(rule) {
    /// <param name="rule" type="Sys.Mvc.JsonValidationRule">
    /// </param>
    /// <returns type="Sys.Mvc.Validator"></returns>
    return Function.createDelegate(new Sys.Mvc.RequiredValidator(), new Sys.Mvc.RequiredValidator().validate);
}
Sys.Mvc.RequiredValidator._isRadioInputElement = function Sys_Mvc_RequiredValidator$_isRadioInputElement(element) {
    /// <param name="element" type="Object" domElement="true">
    /// </param>
    /// <returns type="Boolean"></returns>
    if (element.tagName.toUpperCase() === 'INPUT') {
        var inputType = (element.type).toUpperCase();
        if (inputType === 'RADIO') {
            return true;
        }
    }
    return false;
}
Sys.Mvc.RequiredValidator._isSelectInputElement = function Sys_Mvc_RequiredValidator$_isSelectInputElement(element) {
    /// <param name="element" type="Object" domElement="true">
    /// </param>
    /// <returns type="Boolean"></returns>
    if (element.tagName.toUpperCase() === 'SELECT') {
        return true;
    }
    return false;
}
Sys.Mvc.RequiredValidator._isTextualInputElement = function Sys_Mvc_RequiredValidator$_isTextualInputElement(element) {
    /// <param name="element" type="Object" domElement="true">
    /// </param>
    /// <returns type="Boolean"></returns>
    if (element.tagName.toUpperCase() === 'INPUT') {
        var inputType = (element.type).toUpperCase();
        switch (inputType) {
            case 'TEXT':
            case 'PASSWORD':
            case 'FILE':
                return true;
        }
    }
    if (element.tagName.toUpperCase() === 'TEXTAREA') {
        return true;
    }
    return false;
}
Sys.Mvc.RequiredValidator._validateRadioInput = function Sys_Mvc_RequiredValidator$_validateRadioInput(elements) {
    /// <param name="elements" type="Array" elementType="Object" elementDomElement="true">
    /// </param>
    /// <returns type="Object"></returns>
    for (var i = 0; i < elements.length; i++) {
        var element = elements[i];
        if (element.checked) {
            return true;
        }
    }
    return false;
}
Sys.Mvc.RequiredValidator._validateSelectInput = function Sys_Mvc_RequiredValidator$_validateSelectInput(optionElements) {
    /// <param name="optionElements" type="DOMElementCollection">
    /// </param>
    /// <returns type="Object"></returns>
    for (var i = 0; i < optionElements.length; i++) {
        var element = optionElements[i];
        if (element.selected) {
            if (!Sys.Mvc._validationUtil.stringIsNullOrEmpty(element.value)) {
                return true;
            }
        }
    }
    return false;
}
Sys.Mvc.RequiredValidator._validateTextualInput = function Sys_Mvc_RequiredValidator$_validateTextualInput(element) {
    /// <param name="element" type="Object" domElement="true">
    /// </param>
    /// <returns type="Object"></returns>
    return (!Sys.Mvc._validationUtil.stringIsNullOrEmpty(element.value));
}
Sys.Mvc.RequiredValidator.prototype = {
    
    validate: function Sys_Mvc_RequiredValidator$validate(value, context) {
        /// <param name="value" type="String">
        /// </param>
        /// <param name="context" type="Sys.Mvc.ValidationContext">
        /// </param>
        /// <returns type="Object"></returns>
        var elements = context.fieldContext.elements;
        if (!elements.length) {
            return true;
        }
        var sampleElement = elements[0];
        if (Sys.Mvc.RequiredValidator._isTextualInputElement(sampleElement)) {
            return Sys.Mvc.RequiredValidator._validateTextualInput(sampleElement);
        }
        if (Sys.Mvc.RequiredValidator._isRadioInputElement(sampleElement)) {
            return Sys.Mvc.RequiredValidator._validateRadioInput(elements);
        }
        if (Sys.Mvc.RequiredValidator._isSelectInputElement(sampleElement)) {
            return Sys.Mvc.RequiredValidator._validateSelectInput((sampleElement).options);
        }
        return true;
    }
}


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.StringLengthValidator

Sys.Mvc.StringLengthValidator = function Sys_Mvc_StringLengthValidator(minLength, maxLength) {
    /// <param name="minLength" type="Number" integer="true">
    /// </param>
    /// <param name="maxLength" type="Number" integer="true">
    /// </param>
    /// <field name="_maxLength" type="Number" integer="true">
    /// </field>
    /// <field name="_minLength" type="Number" integer="true">
    /// </field>
    this._minLength = minLength;
    this._maxLength = maxLength;
}
Sys.Mvc.StringLengthValidator.create = function Sys_Mvc_StringLengthValidator$create(rule) {
    /// <param name="rule" type="Sys.Mvc.JsonValidationRule">
    /// </param>
    /// <returns type="Sys.Mvc.Validator"></returns>
    var minLength = (rule.ValidationParameters['min'] || 0);
    var maxLength = (rule.ValidationParameters['max'] || Number.MAX_VALUE);
    return Function.createDelegate(new Sys.Mvc.StringLengthValidator(minLength, maxLength), new Sys.Mvc.StringLengthValidator(minLength, maxLength).validate);
}
Sys.Mvc.StringLengthValidator.prototype = {
    _maxLength: 0,
    _minLength: 0,
    
    validate: function Sys_Mvc_StringLengthValidator$validate(value, context) {
        /// <param name="value" type="String">
        /// </param>
        /// <param name="context" type="Sys.Mvc.ValidationContext">
        /// </param>
        /// <returns type="Object"></returns>
        if (Sys.Mvc._validationUtil.stringIsNullOrEmpty(value)) {
            return true;
        }
        return (this._minLength <= value.length && value.length <= this._maxLength);
    }
}


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc._validationUtil

Sys.Mvc._validationUtil = function Sys_Mvc__validationUtil() {
}
Sys.Mvc._validationUtil.arrayIsNullOrEmpty = function Sys_Mvc__validationUtil$arrayIsNullOrEmpty(array) {
    /// <param name="array" type="Array" elementType="Object">
    /// </param>
    /// <returns type="Boolean"></returns>
    return (!array || !array.length);
}
Sys.Mvc._validationUtil.stringIsNullOrEmpty = function Sys_Mvc__validationUtil$stringIsNullOrEmpty(value) {
    /// <param name="value" type="String">
    /// </param>
    /// <returns type="Boolean"></returns>
    return (!value || !value.length);
}
Sys.Mvc._validationUtil.elementSupportsEvent = function Sys_Mvc__validationUtil$elementSupportsEvent(element, eventAttributeName) {
    /// <param name="element" type="Object" domElement="true">
    /// </param>
    /// <param name="eventAttributeName" type="String">
    /// </param>
    /// <returns type="Boolean"></returns>
    return (eventAttributeName in element);
}
Sys.Mvc._validationUtil.removeAllChildren = function Sys_Mvc__validationUtil$removeAllChildren(element) {
    /// <param name="element" type="Object" domElement="true">
    /// </param>
    while (element.firstChild) {
        element.removeChild(element.firstChild);
    }
}
Sys.Mvc._validationUtil.setInnerText = function Sys_Mvc__validationUtil$setInnerText(element, innerText) {
    /// <param name="element" type="Object" domElement="true">
    /// </param>
    /// <param name="innerText" type="String">
    /// </param>
    var textNode = document.createTextNode(innerText);
    Sys.Mvc._validationUtil.removeAllChildren(element);
    element.appendChild(textNode);
}


////////////////////////////////////////////////////////////////////////////////
// Sys.Mvc.ValidatorRegistry

Sys.Mvc.ValidatorRegistry = function Sys_Mvc_ValidatorRegistry() {
    /// <field name="validators" type="Object" static="true">
    /// </field>
}
Sys.Mvc.ValidatorRegistry.getValidator = function Sys_Mvc_ValidatorRegistry$getValidator(rule) {
    /// <param name="rule" type="Sys.Mvc.JsonValidationRule">
    /// </param>
    /// <returns type="Sys.Mvc.Validator"></returns>
    var creator = Sys.Mvc.ValidatorRegistry.validators[rule.ValidationType];
    return (creator) ? creator(rule) : null;
}
Sys.Mvc.ValidatorRegistry._getDefaultValidators = function Sys_Mvc_ValidatorRegistry$_getDefaultValidators() {
    /// <returns type="Object"></returns>
    return { required: Function.createDelegate(null, Sys.Mvc.RequiredValidator.create), length: Function.createDelegate(null, Sys.Mvc.StringLengthValidator.create), regex: Function.createDelegate(null, Sys.Mvc.RegularExpressionValidator.create), range: Function.createDelegate(null, Sys.Mvc.RangeValidator.create), number: Function.createDelegate(null, Sys.Mvc.NumberValidator.create) };
}


Sys.Mvc.NumberValidator.registerClass('Sys.Mvc.NumberValidator');
Sys.Mvc.FormContext.registerClass('Sys.Mvc.FormContext');
Sys.Mvc.FieldContext.registerClass('Sys.Mvc.FieldContext');
Sys.Mvc.RangeValidator.registerClass('Sys.Mvc.RangeValidator');
Sys.Mvc.RegularExpressionValidator.registerClass('Sys.Mvc.RegularExpressionValidator');
Sys.Mvc.RequiredValidator.registerClass('Sys.Mvc.RequiredValidator');
Sys.Mvc.StringLengthValidator.registerClass('Sys.Mvc.StringLengthValidator');
Sys.Mvc._validationUtil.registerClass('Sys.Mvc._validationUtil');
Sys.Mvc.ValidatorRegistry.registerClass('Sys.Mvc.ValidatorRegistry');
Sys.Mvc.FormContext._validationSummaryErrorCss = 'validation-summary-errors';
Sys.Mvc.FormContext._validationSummaryValidCss = 'validation-summary-valid';
Sys.Mvc.FormContext._formValidationTag = '__MVC_FormValidation';
Sys.Mvc.FieldContext._hasTextChangedTag = '__MVC_HasTextChanged';
Sys.Mvc.FieldContext._hasValidationFiredTag = '__MVC_HasValidationFired';
Sys.Mvc.FieldContext._inputElementErrorCss = 'input-validation-error';
Sys.Mvc.FieldContext._inputElementValidCss = 'input-validation-valid';
Sys.Mvc.FieldContext._validationMessageErrorCss = 'field-validation-error';
Sys.Mvc.FieldContext._validationMessageValidCss = 'field-validation-valid';
Sys.Mvc.ValidatorRegistry.validators = Sys.Mvc.ValidatorRegistry._getDefaultValidators();

// ---- Do not remove this footer ----
// Generated using Script# v0.5.0.0 (http://projects.nikhilk.net)
// -----------------------------------

// register validation
Sys.Application.add_load(function() {
  Sys.Application.remove_load(arguments.callee);
  Sys.Mvc.FormContext._Application_Load();
});

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About the Author

Jovan Popovic
Architect Gowi
Serbia Serbia
Started as a young scientist - winning the highest national awards in mathematics, physics, electrotechnics, and electronics.
Graduated from Faculty of Electrical Engineering, Department of Computer Techniques and Informatics, University of Belgrade, Serbia, as a first in the class, as a Master of Software Sciences.
Currently working in Gowi as a Software engineer, architect, and project manager since 2004 - mostly using Microsoft technologies (ASP.NET, C#). Member of JQuery community - created few popular plugins (four popular JQuery DataTables add-ins and loadJSON template engine).
Interests: Software engineering process(estimation and standardization), mobile and business intelligence platforms.

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