Convert a Dictionary to a List of KeyValuePair in C#

This post will discuss how to convert a Dictionary<TKey,TValue> to a List<KeyValuePair> in C#.

1. Using `Dictionary<TKey,TValue>.ToList()` Method

A simple solution is to use ToList() method to create a List<KeyValuePair> from a Dictionary<TKey,TValue>. It is available in LINQ and you need to add System.Linq namespace.

using System;

using System.Linq;

using System.Collections.Generic;

public class Example

{

public static void Main()

{

Dictionary<string, string> dict = new Dictionary<string, string>();

dict.Add("White", "#FFFFFF");

dict.Add("Grey", "#808080");

dict.Add("Silver", "#C0C0C0");

dict.Add("Black", "#000000");

List<KeyValuePair<string, string>> mappings = dict.ToList();

Console.WriteLine(String.Join(", ", mappings));

}

Download Run Code

Output:

[White, #FFFFFF], [Grey, #808080], [Silver, #C0C0C0], [Black, #000000]

2. Using foreach loop

Another option is to create a new list of KeyValuePair, iterate over the Dictionary<TKey,TValue>, and manually add each KeyValuePair to the new dictionary. This can be easily done using the foreach loop, as demonstrated below. Note that this doesn’t uses LINQ.