Question

I need to share data between classes in C#. Sounds easy enough. I have a collection that is loaded with data in a class. Let’s say it is defined like this:

public class AppAdmin: IApplicationThingy
{
     public ObservableCollection<Data> DataCollection;

Now, in another class, I want to look at DataCollection. Both classes are in the same namespace. AppAdmin.DataCollection does not work. Can you help?

Answer 1

You have to have an instance of AppAdmin to access DataCollection

var appAdmin = new AppAdmin();
var data = addAdmin.DataCollection;

or if the design permits, you can make DataCollection static

public class AppAdmin: IApplicationThingy
{
     public static ObservableCollection<Data> DataCollection;

and then you can access DataCollection as you mention in the question by

var data = AppAdmin.DataCollection;