[2.0] static variables in an app that can only open one file at a time

if my app can only have one file open at a time, is it a good idea to start sticking static methods all over my code? such as:

Code:

---

internal static class Program {
        public static MyFileClass curFile;

        // ...
}

---

Code:

---

internal class MainForm : Form {
        public static MainForm inst;

        public MainForm() {
                inst = this;

                InitializeComponent();
        }

        // ...
}

---

i know that seems kind of vague, but i began coding a project and didn't plan well, so some methods took a MyFileClass as a parameter while some just used the static variable. Which would be a better idea?

Thanks in advance,
John

The "static" key word doesn't just exist for convenience. If a variable, property or method is logically a member of the class, rather than a member of an instance of that class, then it should be declared static.

Implement a Singleton.
http://www.yoda.arachsys.com/csharp/singleton.html

doh! thanks. btw that's the best discussion of singletons in c# i've seen so far. thanks :thumb:

Yoda is wise. :)