What are some examples of static classes in C#?

What are some examples of static classes in C#?

Static classes in C# are classes that cannot be instantiated and can only contain static members. Examples include the Math class, which provides methods for mathematical operations, and the Convert class, which offers methods for converting types.

Can you explain why we use static classes?

We use static classes to group related utility functions that don't require an instance of the class. This helps in organizing code and improving performance since static members are shared across all instances.

Are there any limitations to static classes?

Yes, static classes cannot implement interfaces, cannot be instantiated, and cannot contain instance members. They are also sealed, meaning they cannot be inherited.

Can you give me a code example of a static class?

Sure! Here's a simple example:

public static class MathUtilities {
    public static int Add(int a, int b) {
        return a + b;
    }
}

You can call MathUtilities.Add(5, 3) to get the result.

What about static methods in non-static classes?

Static methods in non-static classes can be called without creating an instance of the class. They can access static members but not instance members.