How do I add an attribute to the field of the base class from child class?

问题

Base class:

public class XmlNameValueField : XmlBaseField
{                       
        [XmlAttribute("n")]
        [Required]
        public string Name { get; set; }

        [XmlText]
        public string Value { get; set; }        
 }

Child Class:

 public class DateField : XmlNameValueField
 {            
 }

In the Child class field Name must have an additional attribute

[DataType (DataType.EmailAddress)]

回答1:

You'll need to mark the property as virtual in the base class, override it in the child class and add the attributes.

来源：https://stackoverflow.com/questions/7851069/how-do-i-add-an-attribute-to-the-field-of-the-base-class-from-child-class