What are static variables in C#?

What are static variables in C#?

Static variables in C# are shared across all instances of a class. They retain their value between method calls.

Can you give me an example of how to use a static variable?

Sure! Here's a simple example:

class Counter {
    private static int count = 0;
    public static void Increment() {
        count++;
    }
    public static int GetCount() {
        return count;
    }
}

In this example, count is a static variable that keeps track of how many times Increment has been called.

What happens if I change the value of a static variable?

If you change the value of a static variable, that change will be reflected across all instances of the class, as there is only one copy of the static variable.

Are there any drawbacks to using static variables?

Yes, static variables can lead to issues with state management and can make unit testing more difficult, as they maintain state across different tests.