Translate Word With Dictionary

using System;
using System.Collections.Generic;

class TranslateWordWithDictionary
{
  //A dictionary is stored as a sequence of text lines containing words and their explanations. Write a program that enters a word and translates it by using the dictionary. Sample dictionary:
  //.NET – platform for applications from Microsoft
  //CLR – managed execution environment for .NET
  //namespace – hierarchical organization of classes

  static void Main()
  {
    var sampleDictionary = new Dictionary<string, string >(StringComparer.OrdinalIgnoreCase){
                                                                                              { ".NET", "– platform for applications from Microsoft"},
                                                                                              {"CLR", "– managed execution environment for .NET"},
                                                                                              {"namespace", "– hierarchical organization of classes" }

                                                                                            };
    Console.Write("Find a definition for: ");
    string wordTosearch = Console.ReadLine();

    try
    {
      Console.WriteLine("{0} {1}", wordTosearch, sampleDictionary[wordTosearch.ToLowerInvariant()]);
    }
      catch (KeyNotFoundException)
    {

      Console.WriteLine("The word '{0}' cannot be found in the dictionary!", wordTosearch);
    }

  }
}