String case

using System;/*  ja v a 2s .  co m*/

class Sample
{
    public static void Main()
    {
        string s = "java2s.com";

        Console.WriteLine(s.ToUpper());
        Console.WriteLine(s.ToLower());

    }
}

using System;/*from   j  a  va 2 s  . c  o  m*/

class Main
{
  static void Main(string[] args)
  {
    char smallA = 'a';
           char largeA = 'A';

           Console.WriteLine( "a = {0} A = {1}", (int) smallA, (int) largeA );

           string str1 = "This Is A String.";
           string str2 = "This is a string.";

           Console.WriteLine( "Case sensitive comparison of str1 and str2 = {0}", String.Compare( str1, str2 ));
           Console.WriteLine( "Case insesitive comparison of str1 and str2 = {0}", String.Compare( str1, str2, true ));
  }
}

using System;/*from  ja v  a2s  . c  om*/
using System.Globalization;


public class SamplesTextInfo  {

   public static void Main()  {
      string myString = "this Is a Test";

      TextInfo myTI = new CultureInfo("en-US",false).TextInfo;
      
      Console.WriteLine( "\"{0}\" to lowercase: {1}", myString, myTI.ToLower( myString ) );
      
      Console.WriteLine( "\"{0}\" to uppercase: {1}", myString, myTI.ToUpper( myString ) );

      Console.WriteLine( "\"{0}\" to titlecase: {1}", myString, myTI.ToTitleCase( myString ) );
   }
}