[C#] FastMember

在公司內發現該套件 - FastMember，了解如何使用它，簡易筆記一下

using FastMember;
using System;
using System.Linq;

namespace FastMemberDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            TypeAccessor Accessor = TypeAccessor.Create(typeof(Employee));
            MemberSet Members = Accessor.GetMembers();

            Console.WriteLine("------- Member 相關");
            Console.WriteLine("-- 只列出公開屬性，所以沒有 Status");
            foreach (Member m in Members)
            {
                Console.WriteLine(m.Name);
            }

            Console.WriteLine("-- 屬性存在測試");
            string PropertyName = "PropertyNotExists";
            if (Members.Any(m => m.Name == PropertyName) == false)
                Console.WriteLine($"該屬性 {PropertyName} 不存在");

            Console.WriteLine("------- Accessor 相關");
            Console.WriteLine("-- Property 取值和設定測試");

            Employee employee = new Employee()
            {
                EmployeeID = 1,
                EmployeeName = "員工姓名",
                Birthday = new DateTime(2021, 8, 13)
            };

            // 設定 Property 值
            Accessor[employee, nameof(Employee.EmployeeName)] = "哇係 FastMember 啦";
            Console.WriteLine($"透過 FastMember 設定 EmployeeName：{employee.EmployeeName}");

            // 取得 Property 值
            DateTime birthday = (DateTime)Accessor[employee, nameof(Employee.Birthday)];
            Console.WriteLine($"生日為 {birthday}");
        }
    }

    public class Employee
    {
        public int EmployeeID { get; set; }

        public string EmployeeName { get; set; }

        public DateTime Birthday { get; set; }

        /// <summary>
        /// 故意設定為 private 來測試的
        /// </summary>
        private bool Status { get; set; }
        
        public int? Age { get; set; }        
    }
}

• 參考資料
• [創意料理] 用 IL Code 來做一個簡易版本的 FastMember
• C# Class FastMember.TypeAccessor