using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

         var array = new Tuple<string, string>[]

                  {

                     new Tuple<string, string>("asd", "sdf"),

                     new Tuple<string, string>("fgh", "ghj"),

                     new Tuple<string, string>("dfg", "ghj"),

                     new Tuple<string, string>("sdf", "fgh"),

                     new Tuple<string, string>("ghj", "hjk")

                  };

        var result = array.ToDictionary(x => x.Item1, x => x.Item2);

        foreach (var key in result.Keys)

            Console.WriteLine(key + " " + result[key]);

    }

}