C# Thread

How to implement singleton design pattern in C#?How to use nullable types in .Net?

 

Hello, well it's pretty easy if you do a google search (for singleton pattern):
http://csharpindepth.com/articles/general/singleton.aspx

About nullable types, you cannot define int, double, char as null in C#
To do that you can use nullable type. This is written like: int? myvar=null;

This is interpreted like Nullable<int> myvar=new Nullable<int>();

Good luck!

 

http://csharpindepth.com/articles/general/singleton.aspx

Found this.Hope it helps

 

public class Singleton
{
        private static Singleton instance;

        private Singleton()
        {
       
        }

        public static Singleton GetInstance()
        {
                if(instance==null)
                {
                        instance=new Singleton();
                }
                return instance;
        }
}

Code (markup):

 

just declare a class as static and you have a class that does similar job as singleton without unnecessary coding.

 

How to use nullable types in .Net
ans:
Data Types are divided into two catagories
Value Type :int,float,double
Reference Type :string ,class
by default value types are non nullable to make them nullable you can use ?
int i = null (not possible)
int ?i= null(possible)