C# Switch on Object Type at Runtime

Answer 1

Here's a working example with comments. It uses a generic Dictionary of Type and Lambda Func.

using System;
using System.Collections.Generic;
using System.Linq;

namespace ConsoleApplication1
{
    class Program
    {
        // a custom class
        public class MyPerson
        {
            public string FN { get; set; }
            public string LN { get; set; }
        }
        static void Main(string[] args)
        {
            // your prebuilt dictionary of Types to Lambda expressions to get a string
            Dictionary> MyToStringLookup = new Dictionary>()
            {

                {typeof(String), new Func( obj => obj.ToString() )},
                {typeof(DateTime), new Func( obj => ((DateTime)obj).ToString("d") )},
                {typeof(MyPerson), new Func( obj => (obj as MyPerson).LN )},
            };
            // your list of objects
            List