ForEach and Zip for IDictionary

DictionaryExtensions.cs

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

namespace Extensions
{
    public static class DictionaryExtensions
    {
        public static void ForEach<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, Action<TKey, TValue> action)
        {
            foreach (var key in dictionary.Keys)
            {
                action.Invoke(key, dictionary[key]);
            }
        }
        
        public static IEnumerable<TResult> Zip<TKey, TValue, TResult>(this IDictionary<TKey, TValue> dictionary, Func<TKey, TValue, TResult> resultSelector)
        {
            return dictionary.Keys.Zip(dictionary.Values, resultSelector);
        }
    }
}

namespace Tester
{
    using Extensions;
    
    public class Program
    {
        public static void Main(string[] args)
        {
            Dictionary<string, int> dict = new Dictionary<string, int>
            {
                {"Foo", 1 },
                {"Bar", 2 }
            };
            
            dict.ForEach((x, y) => Console.WriteLine("ForEach: {0}, {1}", x, y));
            
            Console.WriteLine(string.Join("\n", dict.Zip((x, y) => string.Format("Zip: {0}, {1}", x, y)).ToArray()));
        }
    }
}