Reverse a string in C#

• In C#  Reverse String,Receives string and returns the string with its letters reversed.

 class Reverse  
   {  
     static class StringHelper  
     {  
       /// Receives string and returns the string with its letters reversed.  
       public static string ReverseString(string s)  
       {  
         char[] arr = s.ToCharArray();  
         Array.Reverse(arr);  
         return new string(arr);  
       }  
     }  
     class Program  
     {  
       static void Main()  
       {  
         Console.WriteLine(StringHelper.ReverseString("framework"));  
         Console.WriteLine(StringHelper.ReverseString("samuel"));  
         Console.WriteLine(StringHelper.ReverseString("example string"));  
         Console.ReadLine();  
       }  
     }  
   }