reflection.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.ComponentModel;

public class Program
{
  public static void Main()
  {
    var dto = new ExampleDTO {
      Guid = Guid.NewGuid(),
      Name = "Example",
      Address = "Somewhere"
    };

    var properties = dto.GetType().GetProperties();
    Console.WriteLine($"Found {properties.Count()} properties");

    foreach(var p in properties) {

      var displayNameAttribute = (DisplayNameAttribute)p.GetCustomAttribute(typeof(DisplayNameAttribute));

      Console.WriteLine(p.Name);
      Console.WriteLine(displayNameAttribute.DisplayName);
      Console.WriteLine(p.GetValue(dto));
      Console.WriteLine("");
    }
  }
}

public class ExampleDTO {
  [DisplayName("id")]
  public Guid Guid {get;set;}

  [DisplayName("name")]
  public string Name {get;set;}

  [DisplayName("addr")]
  public string Address {get;set;}
}