Dictionary to anonymous type : DictionaryBase « Collections Data Structure « C# / C Sharp

1. C# / C Sharp
2. Collections Data Structure
3. DictionaryBase

Dictionary to anonymous type

  


//The MIT License (MIT)
//http://arolibraries.codeplex.com/license
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace AroLibraries.ExtensionMethods.Enumerable
{
    public static class IDictionaryExt
    {
        public static TValue Ext_GetValueOrDefault<TKey, TValue>(this IDictionary<TKey, TValue> dict, TKey key)
        {
            TValue result;
            dict.TryGetValue(key, out result);
            return result;
        }


        /// <summary>
        /// 
        /// </summary>
        /// <see cref="http://jacobcarpenter.wordpress.com/2008/03/13/dictionary-to-anonymous-type/"/>
        /// <example>
        ///        var dict = new Dictionary<string, object> {
        ///    { "Name", "Jacob" },
        ///    { "Age", 26 },
        ///    { "FavoriteColors", new[] { ConsoleColor.Blue, ConsoleColor.Green } },
        ///    };
        ///    var person = dict.ToAnonymousType(
        ///     new
        ///    {
        ///    Name = default(string),
        ///    Age = default(int),
        ///    FavoriteColors = default(IEnumerable<ConsoleColor>),
        ///    Birthday = default(DateTime?),
        ///     });
        /// </example>
        /// <typeparam name="T"></typeparam>
        /// <typeparam name="TValue"></typeparam>
        /// <param name="dict"></param>
        /// <param name="anonymousPrototype"></param>
        /// <returns></returns>
        public static T Ext_ToAnonymousType<T, TValue>(this IDictionary<string, TValue> dict, T anonymousPrototype)
        {
            // get the sole constructor
            var ctor = anonymousPrototype.GetType().GetConstructors().Single();
            // conveniently named constructor parameters make this all possible...
            var args = from p in ctor.GetParameters()
                       let val = dict.Ext_GetValueOrDefault(p.Name)
                       select val != null && p.ParameterType.IsAssignableFrom(val.GetType()) ? (object)val : null;

            return (T)ctor.Invoke(args.ToArray());
        }
    }
}

   
    
  

Related examples in the same category