get instance from public class on each form

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Hello

I have this class

namespace User
{
public class ApplicationData
{
private static ApplicationData appData = null;
private string nesto;
public static ApplicationData getInstance()
{
if (appData == null)
{
appData = new ApplicationData();
}
return appData;
}

public string Nesto
{
get
{

return nesto;
}
set { nesto = value; }
}

}
}

on all my forms I have to use Nesto but I don't know how to call this class to my forms

Posted 9-Sep-13 22:19pm

shonezi

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Jameel VM 10-Sep-13 4:25am

r u try to implement Singleton design pattern?

Jameel VM 10-Sep-13 4:26am

What are you trying to implement?

shonezi 10-Sep-13 4:29am

yes, yes, singleton design pattern, I forgot the name :) I want to use that string on each form which will be filled with data on main form, so with this design pattern I want to have that data on each form, but I dont know how to call it

Jameel VM 10-Sep-13 4:38am

did you know why singleton pattern?

shonezi 10-Sep-13 4:45am

friend recommended it to me, because on my main form I have bound that string Nesto with datatable (filled with data from sql server) but the data from Nesto has to be avaliable to every form I have, and now I have problem with actually calling the class with that filled data.

Jameel VM 10-Sep-13 4:56am

So you want to restrict the process for the second time.right?

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Jameel VM · Accepted Answer · 2013-09-09T22:45:00

A singleton is a class which only allows a single instance of itself to be created, and usually gives simple access to that instance
For Singleton you should also set constructor as private. You can call the getInstance without creating an object.Because the method is static.
For example

C#

ApplicationData obj= ApplicationData.getInstance();

It will create an instance of ApplicationData class on the first time. Then again you try to call this process it will restrict .
Hope this helps