Strings in C#

 In C#, you can use strings as array of characters, However, more common practice is to use the string keyword to declare a string variable. The string keyword is an alias for the System.String class.

Creating a String Object

You can create string object using one of the following methods −

·        By assigning a string literal to a String variable

·        By using a String class constructor

·        By using the string concatenation operator (+)

·        By retrieving a property or calling a method that returns a string

·        By calling a formatting method to convert a value or an object to its string representation

The following example demonstrates this −

using System;

 namespace StringApplication {

 class Program {

    static void Main(string[] args) {

         //from string literal and string concatenation

         string fname, lname;

         fname = "Parth";

         lname = "Jolly";

        char []letters= { 'H', 'e', 'l', 'l', 'o' };

         string [] sarray={ "Hello", "From", "Tutorials", "Point" };

            string fullname = fname + lname;

         Console.WriteLine("Full Name: {0}", fullname);

         //by using string constructor { 'H', 'e', 'l', 'l', 'o' };

         string greetings = new string(letters);

         Console.WriteLine("Greetings: {0}", greetings);

           //methods returning string { "Hello", "From", "Strings", "Tutorial" };

         string message = String.Join(" ", sarray);

         Console.WriteLine("Message: {0}", message);

          //formatting method to convert a value

         DateTime waiting = new DateTime(2012, 10, 10, 17, 58, 1);

         string chat = String.Format("Message sent at {0:t} on {0:D}", waiting);

         Console.WriteLine("Message: {0}", chat);

      }

   }

}

When the above code is compiled and executed, it produces the following result −

Full Name: ParthJolly

Greetings: Hello

Message: Hello From Strings Tutorial

Message: Message sent at 5:58 PM on Wednesday, October 10, 2012

Properties of the String Class

The String class has the following two properties −

Sr.No.	Property & Description
1	Chars Gets the Char object at a specified position in the current String object.
2	Length Gets the number of characters in the current String object.