Singleton (ஆயிரத்தில் ஒருவன்) Design Pattern - C# - in Tamil

"Singleton pattern ensures a class has only one instance and provides a global point of access to it."
Thumb rule:
1. Declare a private constructor for the class.
2. Declare a static member for that class.
3. Create a static method for that class.
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//Library.cs - Class
using System;
namespace SigletonDemo
{
public class Library
{
private static int counter = 0;
private Library()
{
counter++;
Console.WriteLine("Counter Value : " + counter.ToString());
}
public static Library objInstance;
private static readonly object mylockobject = new object(); //Multi threaded
public static Library GetInstance()
{
lock (mylockobject)
{
if (objInstance == null)
objInstance = new Library();
}
return objInstance;
}
public string getBookDetails()
{
return "The Secret - written by Rhonda Byrne.";
}
public string getBook1Details()
{
return "Thulazi - written by Balakumaran.";
}
}
}
//Book.cs - Class
using System;
namespace SigletonDemo
{
public class Book
{
static void Main(string[] args)
{
Library book = Library.GetInstance();
Library book1 = Library.GetInstance();
string sBookName = book.getBookDetails();
string sBook1Name = book1.getBook1Details();
Console.WriteLine(sBookName);
Console.WriteLine(sBook1Name);
Console.ReadLine();
}
}
}

[@connectphanindar6956]

way of explanation is good bro.. I got it finally

[@VAPStudent]

Glad it helped. Thanks for your support.

[@SurendranArulbalan]

what are the packages we need to this demo and i create this project on web core API

[@VAPStudent]

Core also having inbuilt packages. you can try. I don't have sample with me.

[@bharanidharank]

Please don't use black background, it's very difficult to see

[@VAPStudent]

I will try to correct. Thanks for the info.

[@thiyagarajanm7487]

Nice..and one doubt is any other way will achieve singleton because lock key is very cost ..so please explain any other way if possible

[@VAPStudent]

Thanks for your support. Let me check and update you.

[@krishna-le8zq]

Itha design patterns ku playlist Iruka?

[@VAPStudent]

No. Actually planning for Oops concept play list. As of now i have completed singleton only. Thanks for your support.

[@vinothkumarv9722]

can u explain this patter from js ...please

[@VAPStudent]

I am basically from C#. Anyway let me try my level best Mr.Vinothkumar.

[@vinothkumarv9722]

thanks for your quick response bro... yes...please.... and please check this. is correct or not: kzbin.info/www/bejne/nIeTf3eKj6mCmaM

[@nancyangelnissi]

Thanks. Could understand better.

[@VAPStudent]

Welcome, Thanks for your support.

[@sanocycles6642]

😍

[@VAPStudent]

Thankyou