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Property in c#


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A property is a member that provides a flexible mechanism to read, write or compute the value of a private field. We can use concept of property when we want to get and set any value in objects member. It is better practice that does not allow accessing your variables directly. If you want to get value from any variable or want to set any value to a variable then we can use concept of property. Property is also known as indexer.
We can use get and set keyword to create a property in c#. Depending upon programming requirements we can create three types of property.

1)      Read only property: Such type of property which is created by using get keyword is called read only property. We cannot initialize any new value to read only property. For creating read only property we can use following syntax

  <access-specifier> <return-type> <propery-name>

        {

            get

            {

                //Statement to be executed.

                return <return-value>;

            }

  }

2)      Write only property: Such type of property which is created by using set keyword is called write only property. We cannot access any value from write only property. We can only initialize new value in write only property. For creating write only property we can use following syntax.

<access-specifier> <return-type> <propery-name>

      {

            set

            {

                //Statement to be executed.

            }

}

3)      Read-Write property: Such type of property which is created by using get and set keyword is called read-write property. We can access value as well as initilize new value to a variable by using Read-Write property. For creating read-write property we can use following syntax.

<access-specifier> <return-type> <propery-name>

      {

            get

            {

                //Statement to be executed.

                return <return-value>;

            }

set

            {

                //Statement to be executed.

            }

   }

Following example demonstrate use of property in c#

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace PropertyDemo

{

    class Program

    {

        private string _message;

        static void Main(string[] args)

        {

            Program pr = new Program();

            //Calling write only property.

            pr.SetMessage = "This is writeonly property.";

            //Calling read only property

            Console.WriteLine(pr.GetMessage);

            //Calling read-write only property.

            pr.Message = "Hello...";

            Console.WriteLine(pr.Message);

            Console.ReadLine();

        }

        //Creating read only property.

        public string GetMessage

        {

            get

            {

                return "This is readonly property.";

            }

        }

        //Creating write only property.

        public string SetMessage

        {

            set

            {

                Console.WriteLine(value);

            }

        }

        //creating read-write property.

        public string Message

        {

            get

            {

                return _message;

            }

            set

            {

                _message = value;

            }

        }

    }

}

Output:

This is writeonly property.

This is readonly property.

Hello...


Property in c#

By Memtech Lodhi on   5 years ago

Thanks Awadhendra,

It helped me.


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