How To use Get and Set in C#?

Question

In Which cases we can use get and set and How to use just one of them in programs? Joe Wilson

Jignesh Trivedi · Answer

Agreee with Vulpes When you are writing get and set with property is called Auto-Implemented Properties which is introduced in C#3.0. This is used when no additional logic required in the property accessors. private string _name; public string Name { get { return _name; } set { _name = value; } } equivalent to.... public string Name { get; set; } hope this will help you.

Vulpes · Answer

The 'get' and 'set' keywords are used to get the value of a property or to set it. If you only use 'get' the property is said to be read-only. If (more rarely) you only use 'set' the property is said to be write-only. It's also possible to have 'automatic' properties where the 'get' and 'set' parts are empty. The compiler creates a hidden backing field for such properties which can only be accessed via the property - it cannot be accessed directly. The following program demonstrates all 4 usges: using System; public class User { private int _age; private string _gender; private int _passwordHash; public int Age // normal property with parameter checking for setter { get {return _age; } set { if (value 122) { throw new ArgumentException("Age must be between 0 and 122"); } _age = value; } } public string Name {get; set;} // automatic property public string Gender {get{ return _gender;}} // read-only property public string Password {set{ _passwordHash = value.GetHashCode();}} // write-only property public User(string name, string gender, int age) { Name = name; _gender = gender; _age = age; } public void CheckPassword(string password) { if (password.GetHashCode() == _passwordHash) { Console.WriteLine("That's correct :)"); } else { Console.WriteLine("Sorry that's wrong :("); } } } class Program { static void Main() { User u = new User("Fred", "M", 35); Console.Write("Enter you password, {0} : ", u.Name); u.Password = Console.ReadLine(); Console.WriteLine("You age is {0} and gender is {1}", u.Age, u.Gender); Console.Write("Enter you password again : ", u.Name); u.CheckPassword(Console.ReadLine()); Console.ReadKey(); } }