netmash/Netmash.Application.DataContracts/Metadata.cs

using System;
using System.Collections.Generic;

namespace Netmash.Application.DataContracts
{
    public class Metadata : Dictionary<string, string>
    {
        public const string CorrelationIdKey = "CorrelationId";

        public Guid CorrelationId
        {
            get
            {
                return Guid.Parse(this[CorrelationIdKey]);
            }
            set
            {
                if (ContainsKey(CorrelationIdKey))
                    this[CorrelationIdKey] = value.ToString();
                else
                    Add(CorrelationIdKey, value.ToString());
            }
        }
    }
}