Properties can be get and set values. The C#
language provides them as a well-situated way to make things easier syntax.
They are implemented as methods in the intermediate language. They are regular
access points to a class from external code. Unlike fields, properties do not
indicate storage locations. Instead, properties have accessors that identify
the statements to be executed when their values are read or written.
- These are Special procedures that looks like
fields but internally a method
- It allows to put a check on values entered to
some field
- Here we Use a value keyword to input the
value inside a property.
Syntax 1
<scope> <return
type> <property name>
{
set
{
fieldname=value;
}
get
{
return fieldname;
}
}
Syntax 2
<scope> <return
type> <property name>
{
set;get;
}
Properties can of three
types
1.
read/write property
(set,get)
2.
read only property (get)
3.
write only property
(set)
Example
Create a class Employee
having fields empid,name,basic. Use properties to manage data and return
Salary.
Note: Whenever we use
the values, best is Property
using System;
class Employee
{
//fields
int empid;
string name;
int basic;
public int EmpId //property
{
set
{
empid = value;
}
get
{
return empid;
}
}
public string Name
{
set
{
name = value;
}
get
{
return name;
}
}
public int Basic
{
set
{
if (value < 5000)
throw new Exception("Sorry! Basic can never be lesser than 5000");
basic = value;
}
get
{
return basic;
}
}
public double Salary
{
get
{
return basic * 2.5;
}
}
}
class PropertyTest
{
public static void Main()
{
Employee e = new Employee();
e.EmpId = 67;
e.Name = "Abhinav Bajpai";
e.Basic = 8000;
Console.WriteLine("Salary is
{0}", e.Salary);
}
}
Example : Use properties
without any field name
using System;
namespace PropCheck
{
class Employee
{
public int EmpId //property
{
set;
get;
}
public string Name
{
set;
get;
}
public int Basic
{
set;
get;
}
public double Salary
{
get
{
return Basic * 2.5;
}
}
}
class PropertyTest
{
public static void Main()
{
Employee e = new Employee();
e.EmpId = 67;
e.Name = "Abhinav Bajpai";
e.Basic = 8000;
Console.WriteLine("Salary is
{0}", e.Salary);
}
}
}
summary
We sharp out two customs to use properties. Properties are a influential
way to put back methods and present a more perceptive way to use your objects.
They are a grouping of fields and methods on a conceptual level.
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