Convert Dictionary to Dictionary using LINQ?

Question

I\'m trying to find a LINQ oneliner that takes a Dictionary and returns a Dictionary....it might not be possible, but would be nice.

Answer 1

It works straight forward with a simple cast.

Dictionary input = new Dictionary();

// Transform input Dictionary to output Dictionary

Dictionary output =
   input.ToDictionary(item => item.Key, item => (SomeEnum)item.Value);

---

I used this test and it does not fail.

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

namespace DictionaryEnumConverter
{
    enum SomeEnum { x, y, z = 4 };

    class Program
    {
        static void Main(string[] args)
        {           
            Dictionary input =
               new Dictionary();

            input.Add("a", 0);
            input.Add("b", 1);
            input.Add("c", 4);

            Dictionary output = input.ToDictionary(
               pair => pair.Key, pair => (SomeEnum)pair.Value);

            Debug.Assert(output["a"] == SomeEnum.x);
            Debug.Assert(output["b"] == SomeEnum.y);
            Debug.Assert(output["c"] == SomeEnum.z);
        }
    }
}