When Should You Use Static Classes in C#?

When do you use static class in C#?

When a set of functions do not need to be associated with a specific object, the static class is usually used. According to MSDN, the static class makes the implementation simpler and faster because you can call the method without creating an object.

However, there are some potential shortcomings using static classes:

Polymorphism:

Static methods cannot be rewritten, which limits the ability to change the function.

• Interface problem: Static methods cannot be defined by the interface, which hinders the use of static class in the strategy mode.
<:> Test:
• Because the static method cannot be replaced with the test code, the static method is difficult to test. Form large code blocks:
Static classes often accumulate a lot of functions, which reduces its cohesion and difficult to maintain.
• The expansion of the parameters: Static methods can easily accumulate a large number of parameters, resulting in awkward signatures.
• Unnecessary class creation: Static method requires users to create examples of classes for no reason.
• Therefore, before deciding to use a static class, we must carefully weigh its potential shortcomings. As an alternative to static class, you can consider using a single mode or a non -static class with a private constructing function. These methods provide the benefits of packaging and polymorphism while avoiding the shortcomings of static classes.
• In the end, the best way depends on the specific requirements of the solution.

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