How to Convert a Dictionary to an Array of Key-Value Pairs in C# - Step by Step Examples

How to Convert a Dictionary to an Array of Key-Value Pairs in C# ?

Answer

To convert a dictionary to an array of key-value pairs in C#, you can use the `ToArray` method from the `System.Linq` namespace on the dictionary's `KeyValuePair` collection. This allows you to create an array containing all the key-value pairs in the dictionary.

✐ Examples

1 Converting a Dictionary to an Array of Key-Value Pairs Using `ToArray`

We can convert a dictionary to an array of key-value pairs in C# using the `ToArray` method. This example demonstrates how to declare and initialize a dictionary, use the `ToArray` method to convert the dictionary to an array of key-value pairs, and print the array of key-value pairs.

For example,

We start by including the necessary namespaces: using System.Collections.Generic; and using System.Linq;.
We declare and initialize a dictionary named myDictionary with integer keys and string values.
We use the `ToArray` method to convert the dictionary to an array of key-value pairs.
We print the array of key-value pairs.

C# Program

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

class Program
{
    static void Main()
    {
        // Declare and initialize a dictionary
        Dictionary<int, string> myDictionary = new Dictionary<int, string>
        {
            {1, "One"},
            {2, "Two"},
            {3, "Three"}
        };

        // Convert the dictionary to an array of key-value pairs
        KeyValuePair<int, string>[] keyValueArray = myDictionary.ToArray();

        // Print the array of key-value pairs
        Console.WriteLine("Array of key-value pairs:");
        foreach (var kvp in keyValueArray)
        {
            Console.WriteLine("Key: {0}, Value: {1}", kvp.Key, kvp.Value);
        }
    }
}

Output

Array of key-value pairs:
Key: 1, Value: One
Key: 2, Value: Two
Key: 3, Value: Three

2 Converting an Empty Dictionary to an Array of Key-Value Pairs

We can convert an empty dictionary to an array of key-value pairs in C# using the `ToArray` method. This example demonstrates how to declare and initialize an empty dictionary, use the `ToArray` method to convert the dictionary to an array of key-value pairs, and print the array of key-value pairs.

For example,

We start by including the necessary namespaces: using System.Collections.Generic; and using System.Linq;.
We declare and initialize an empty dictionary named myDictionary.
We use the `ToArray` method to convert the dictionary to an array of key-value pairs.
We print the array of key-value pairs.

C# Program

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

class Program
{
    static void Main()
    {
        // Declare and initialize an empty dictionary
        Dictionary<int, string> myDictionary = new Dictionary<int, string>();

        // Convert the dictionary to an array of key-value pairs
        KeyValuePair<int, string>[] keyValueArray = myDictionary.ToArray();

        // Print the array of key-value pairs
        Console.WriteLine("Array of key-value pairs:");
        foreach (var kvp in keyValueArray)
        {
            Console.WriteLine("Key: {0}, Value: {1}", kvp.Key, kvp.Value);
        }
    }
}

Output

Array of key-value pairs:

Summary

In this tutorial, we learned How to Convert a Dictionary to an Array of Key-Value Pairs in C# language with well detailed examples.

◀ Previous Next ▶

C# Tutorials

C# How-Tos

How to Convert a Dictionary to an Array of Key-Value Pairs in C# - Step by Step Examples