typeSwitch.cs

using System;
using System.Collections.Generic;

namespace ProITR.Asur.Isur.Coordinate.Handler.Handlers.MessageHandlers
{
    public class MessageTypeSwitch
    {

        private object _messageToCast;
        private Dictionary<Type, Action> _mappedActions = new Dictionary<Type, Action>();

        public string _couldNotCastErrorMessage { get; set; }
        public Action<string> _couldNotCastErrorAction { get; set; }

        public MessageTypeSwitch(object message, string couldNotCastErrorMessage = null)
        {
            _messageToCast = message;
        }

        public static MessageTypeSwitch SwitchType(object message, string couldNotCastErrorMessage = null)
        {
            return new MessageTypeSwitch(message, couldNotCastErrorMessage);
        }

        public MessageTypeSwitch MapType<T>(Action actionIfCastSuccessful)
        {
            _mappedActions.Add(typeof(T), actionIfCastSuccessful);
            return this;
        }

        public MessageTypeSwitch CatchCouldNotCast(Action<string> actionIfCouldNotCast,
            string message = "Не удалось привести сообщение из очереди ни к одному из типов")
        {
            _couldNotCastErrorAction = actionIfCouldNotCast;
            _couldNotCastErrorMessage = message;
            return this;
        }

        public void RunCast()
        {
            foreach (KeyValuePair<Type, Action> mappedAction in _mappedActions)
            {
                Type typeToCast = mappedAction.Key;
                try
                {
                    Convert.ChangeType(_messageToCast, typeToCast);
                    break;
                }
                catch
                {
                    
                }
            }
        }
    }
}