[属性とリフレクション]プロパティに表示用の属性を付与する

Program.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.Reflection;

namespace ConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            //データ            
            var data = new SampleData() { ID = 1, Name = "TEST01", Address = "Tokyo" };

            //Text取得           
            Type t = typeof(SampleData);
            Console.WriteLine(t.Name);
            PropertyInfo[] properties = t.GetProperties();
            foreach (var prop in properties)
            {
                //AllowMultiple = false のため
                //trueの場合はGetCustomAttributesで全て取得できる
                Attribute txt = Attribute.GetCustomAttribute(prop, typeof(TextAttribute));
                TextAttribute tax = txt as TextAttribute;
                Console.WriteLine(prop.Name + " \t-> " + tax.Text + ":" + prop.GetValue(data, null));                
            }
            Console.ReadKey();
        }

    }
}

SampleData.cs

namespace ConsoleApplication
{
    public class SampleData
    {
        [Text("キー")]
        public int ID { get; set; }
        [Text("名前")]
        public string Name { get; set; }
        [Text("住所")]
        public string Address { get; set; }
    }
}

TextAttribute.cs

using System;

namespace ConsoleApplication
{
    [AttributeUsage(AttributeTargets.Property, AllowMultiple = false)]
    public class TextAttribute : System.Attribute
    {
        public string Text { get; private set; }

        public TextAttribute(string text)
        {
            this.Text = text;
        }
    }
}