Extending the functionalities on a DTO-CodePudding

I have a DTO as follows.

public class PersonDTO
{
  public int Id {get;set;}
  public string Name {get;set;}
}

Assuming I have got a requirement to implement the following interface in the PersonDTO.

public Interface ImplementPerson<T>() 
{
  int GetName();
}

I do not want to make changes to PersonDTO except inheriting ImplementPerson, what options I have to implement GetName method? Finally, when I create an object of PersonDTO I should be able to have GetName() in the intellisense.

public class PersonDTO : ImplementPerson<PersonDTO>
{
 public int Id {get;set;}
 public string Name {get;set;}
}

CodePudding user response：

Try extension class

using System;

public class PersonDTO
{
  public int Id {get;set;}
  public string Name {get;set;}
}

public static class PersonDTOExtension {
    public static int GetName(this PersonDTO p) {
        // implement
        return p.Id;
    }
}

class HelloWorld {
  static void Main() {
    var p = new PersonDTO();
    Console.WriteLine(p.GetName());
  }
}

CodePudding user response：

You can use an abstract class and implement the method in it

public class PersonDTO: Parent
{
  public int Id {get;set;}
  public string Name {get;set;}
}

abstract class Parent {  
    public string GetName(string name) {  
         return name;  
    }  
}  

// 
static void Main() {
   var p = new PersonDTO();
   p.GetName(p.Name);
}