Read phone number from a from a phone book by name

Input Format

The first line contains an integer, , denoting the number of entries in the phone book. 
Each of the  subsequent lines describes an entry in the form of  space-separated values on a single line. The first value is a friend's name, and the second value is an -digit phone number.

After the  lines of phone book entries, there are an unknown number of lines of queries. Each line (query) contains a to look up, and you must continue reading lines until there is no more input.

Sample Input

3
sam 99912222
tom 11122222
harry 12299933
sam
edward
harry

Sample Output

sam=99912222
Not found
harry=12299933

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

            int length = Convert.ToInt32(Console.ReadLine());

            while (di.Count < length)

            {

                string s = Console.ReadLine();

                string[] arr = s.Split(' ');

                di.Add(arr[0], arr[1]);

            }

            string name = Console.ReadLine();

            List<string> names = new List<string>();

            while (!string.IsNullOrWhiteSpace(name))

            {

                names.Add(name);

                name = Console.ReadLine();

            }

            foreach(string s in names)

            {

                if (di.ContainsKey(s.ToString()))

                {

                    Console.WriteLine("{0}={1}",s.ToString(), di[s.ToString()]);

                }

                else

                {

                    Console.WriteLine("Not found");

                }

            }

                Console.ReadLine();