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Left, Right and Mid functions in C#

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  1. namespace LeftRightMid
  2. {
  3.     /// 
  4.     /// Summary description for Class1.
  5.     /// 
  6.     class LeftRightMid
  7.     {
  8.         /// 
  9.         /// The main entry point for the application.
  10.         /// 
  11.         [STAThread]
  12.         static void Main(string[] args)
  13.         {
  14.  
  15.             //assign a value to our string
  16.             string myString = "This is a string";
  17.             //get 4 characters starting from the left
  18.             Console.WriteLine(Left(myString,4));
  19.             //get 6 characters starting from the right
  20.             Console.WriteLine(Right(myString,6));
  21.             //get 4 characters starting at index 5 of the string
  22.             Console.WriteLine(Mid(myString,5,4));
  23.             //get the characters from index 5 up to the end of the string
  24.             Console.WriteLine(Mid(myString,5));
  25.             //display the result to the screen
  26.             Console.ReadLine();
  27.         }
  28.  
  29.         public static string Left(string param, int length)
  30.         {
  31.             //we start at 0 since we want to get the characters starting from the
  32.             //left and with the specified lenght and assign it to a variable
  33.             string result = param.Substring(0, length);
  34.             //return the result of the operation
  35.             return result;
  36.         } 
  37.         public static string Right(string param, int length)
  38.         {
  39.             //start at the index based on the lenght of the sting minus
  40.             //the specified lenght and assign it a variable
  41.             string result = param.Substring(param.Length - length, length);
  42.             //return the result of the operation
  43.             return result;
  44.         }
  45.  
  46.         public static string Mid(string param,int startIndex, int length)
  47.         {
  48.             //start at the specified index in the string ang get N number of
  49.             //characters depending on the lenght and assign it to a variable
  50.             string result = param.Substring(startIndex, length);
  51.             //return the result of the operation
  52.             return result;
  53.         }
  54.  
  55.         public static string Mid(string param,int startIndex)
  56.         {
  57.             //start at the specified index and return all characters after it
  58.             //and assign it to a variable
  59.             string result = param.Substring(startIndex);
  60.             //return the result of the operation
  61.             return result;
  62.         }
  63.  
  64.     }
  65. }

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