Question

Stack Overflow. Let’s say I want to initialize a non-static class of variables, two of which are a UserID (int) and MyDictionary (Dictionary). This non-static class is declared within a static class (and initialized in one of the static class’s members).
If the script runs long and another user accesses the same page, there’s a chance the new user will alter the contents of the other user’s MyDictionary. But I don’t see how this is possible since MyDictionary is in a non-static class. Does anyone understand this? Thank you.

Answer 1

So I’m assuming the code looks a little like this right?

public class MyNonStaticClass
{
    public int UserID;

    public Dictionary<int, string> MyDictionary 
        = new Dictionary<int, string>;
}

public static class MyStaticClass
{
    public static MyNonStaticClass aStaticInstanceOfTheNonStaticClass 
        = new MyNonStaticClass();

    public static void AddToDictionary(int key, string value)
    {
        aStaticInstanceOfTheNonStaticClass.add(key, value);
    }
}

By declaring the object inside the static class as a static variable you are basically saying “In my application I want one of these; and only one of these”; so even though the class is not static; you are still creating a static instance of it.