.NET (Core and Framework)

Save My Soul - (SMS) wrote:

If I declare a class as private, what happens? Who will be able to use that class?

public class ContainingClass
{
    private class EmbeddedClass
    {
        // Stuff
    }
 
    public void SomeMethod()
    {
        // This will work.
        EmbeddedClass o = new EmbeddedClass();
    }
}

pradpb999 wrote:

We can do this by using MS OFFICE libraries, but i want do using WINDOWS API's

analytiks wrote:

the event is defined in a .net framework class, so can't check if it is null

class A
{
public bool IsSubscribed(MethodDelegate passedDelegate)
{
            if (evt == null)
                return false;

            foreach (Delegate d in evt.GetInvocationList())
            {
                if (d == passedDelegate)
                {
                    return true;
                }
            }

            return false;
}
}

A a = new A();
MethodDelegate thisMethod = new MethodDelegate(SomeMethod);
a.evt += thisMethod;
Console.WriteLine(a.IsSubscribed(thisMethod));
a.evt -= thisMethod;
Console.WriteLine(a.IsSubscribed(thisMethod));