MVC unobtrusive validation on checkbox not working

Question

I\'m trying to implement the code as mentioned in this post. In other words I\'m trying to implement unobtrusive validation on a terms and conditions checkbox. If the user

Answer 1

/// 
 
///  Summary : -CheckBox for or input type check required validation is not working the root cause and solution as follows
///
///  Problem :
///  The key to this problem lies in interpretation of jQuery validation 'required' rule. I digged a little and find a specific code inside a jquery.validate.unobtrusive.js file:
///  adapters.add("required", function (options) {
///  if (options.element.tagName.toUpperCase() !== "INPUT" || options.element.type.toUpperCase() !== "CHECKBOX") {
///    setValidationValues(options, "required", true);
///    }
///   });
///   
///  Fix: (Jquery script fix at page level added in to check box required area)
///  jQuery.validator.unobtrusive.adapters.add("brequired", function (options) {
///   if (options.element.tagName.toUpperCase() == "INPUT" && options.element.type.toUpperCase() == "CHECKBOX") {
///              options.rules["required"] = true;
///   if (options.message) {
///                   options.messages["required"] = options.message;
///                       }
///  Fix : (C# Code for MVC validation)
///  You can see it inherits from common RequiredAttribute. Moreover it implements IClientValidateable. This is to make assure that rule will be propagated to client side (jQuery validation) as well.
///  
///  Annotation example :
///   [BooleanRequired]
///   public bool iAgree { get; set' }
///    

/// 


public class BooleanRequired : RequiredAttribute, IClientValidatable
{

    public BooleanRequired()
    {
    }

    public override bool IsValid(object value)
    {
        return value != null && (bool)value == true;
    }

    public IEnumerable GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
    {
        return new ModelClientValidationRule[] { new ModelClientValidationRule() { ValidationType = "brequired", ErrorMessage = this.ErrorMessage } };
    }
}