MVC 4自定义数据注释手动jquery验证调用

首先创建使用自定义验证属性的简单模型

public class Person
{
    [required]
    [Display( Name="Name")]
    public String Name { get; set; }
    public int age { get; set; }

    //Uses a custom data Annotation that requires that at lease it self or the property name passed in the constructor are not empty
    [OneOfTworequired("Mobile")]
    public String Phone { get; set; }
    [OneOfTworequired("Phone")]
    public String Mobile { get; set; }
}

自定义验证类,它使用反射来获取传入的字符串名称的属性以进行测试

注意截至2012年8月15日：如果您使用R_917_11845@VC 4,则需要引用Sy@L_607_45@.web.mvc 3.0以使用IClientValidatable,因为ModelClientValidationRule似乎在MVC 4中不存在

public class OneOfTworequired : ValidationAttribute,IClientValidatable
    {
        private const String defaultErrormessage = "{0} or {1} is required.";

        private String otherProperty;

        public OneOfTworequired(String otherProperty)
            : base(defaultErrormessagE)
        {
            if (String.IsNullOrEmpty(otherProperty))
            {
                throw new ArgumentNullException("otherProperty");
            }

            this.otherProperty = otherProperty;
        }

        public override String FormatErrormessage(String Name)
        {
            return String.Format(ErrormessageString,name,otherProperty);
        }

        protected override ValidationResult IsValid(object value,ValidationContext validationContext)
        {
            PropertyInfo otherPropertyInfo = validationContext.objecTinstance.GetType().GetProperty(otherProperty);

            if (otherPropertyInfo == null)
            {
                return new ValidationResult(String.Format("Property '{0}' is undefined.",otherProperty));
            }

            var otherPropertyValue = otherPropertyInfo.GetValue(validationContext.objecTinstance,null);

            if (otherPropertyValue == null && value == null)
            {
                return new ValidationResult(this.FormatErrormessage(validationContext.DisplayName));
            }

            return ValidationResult.success;
        }
        public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata Metadata,ControllerContext context)
        {
            yield return new ModelClientValidationRule
            {
                Errormessage = FormatErrormessage(Metadata.DisplayName),//This is the name of the method aaded to the jQuery validator method (must be lower casE)
                ValidationType = "oneoftworequired"
            };

        }
    }

将其添加到View或partialview中,您必须确保它不在$(document).ready方法中

jQuery.validator.addMethod("oneoftworequired",function (value,element,param) {
        if ($('#PhonE).val() == '' && $('#MobilE).val() == '')
            return false;
        else
            return true;
    });

    jQuery.validator.unobtrusive.adapters.addBool("oneoftworequired");

如果你想在没有回发或初始页面加载的情况下验证表单,那么似乎只需要jQuery验证器的东西,为此你只需要调用$(‘form’).valid()

希望这有助于某人:)