Course C# : string

Course C# : string 

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 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 = "Rowan";
lname = "Atkinson";
string fullname = fname + lname;
Console.WriteLine("Full Name: {0}", fullname);
//by using string constructor
char[] letters = { 'H', 'e', 'l', 'l','o' };
string greetings = new string(letters);
Console.WriteLine("Greetings: {0}", greetings);
//methods returning string
string[] sarray = { "Hello", "From", "Tutorials", "Point" };
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);
Console.ReadKey() ;
}
}
}


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

Full Name: Rowan Atkinson
Greetings: Hello
Message: Hello From Tutorials Point
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:....

Course C# : string