What is singleton?
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Jak
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Answers
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Rahul M...
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Hi Jak, Singleton is a design pattern. It is used when you need only one instance of a class in your application. We can use static for creating singleton pattern as follows: using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WebApplication2
{
//Eager intialization of singleton pattern
public class Singleton
{
private static Singleton Instance = new Singleton();
private Singleton() { }
public static Singleton GetInstance {
get
{
return Instance;
}
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WebApplication2
{
//Lazy intialization of singleton pattern
public class Singleton
{
private static Singleton Instance = null;
private Singleton() { }
public static Singleton GetInstance {
get
{
if(Instance == null){
Instance =new Singleton();
}
return Instance;
}
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace WebApplication2
{
//Thread safe intialization of singleton pattern
public class Singleton
{
private static Singleton Instance = null;
private Singleton() { }
private static object lockThis = new object();
public static Singleton GetInstance {
get{
if (lockThis){
if (Instance == null)
Instance =new Singleton();
}
return Instance;
}
}
}
}
Posted On:
26-Aug-2015 22:19
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