Question

I know what static class variables do in a C++ class, what I’m not very clear about is the life-cycle of static class variables in a C# class used for an ASP.NET web app. Here’s a code example:

namespace MyWebApp
{
    public static class MyFunctions
    {
        private static string _cachedID;

        public static string getID(string strValue)
        {
            if(_cachedID == null)
                _cachedID = strValue;

            return _cachedID;
        }
    }
}

Can someone explain it in plain English for me?

Answer 1

I’ve read somewhere.

A static variable/field comes into existence before execution of the static constructor for its containing type, and ceases to exist when the associated application domain ceases to exists.