What are non-static classes in C#?

Non-static classes can be instantiated, but static classes cannot be instantiated, that is, you cannot use the new keyword to create variables of class type.

Non-static classes can have instance methods and static methods.

Use the class name itself to access members of a static class, and static classes are sealed.

Non-static class example -

public class Calculate

Static class example -

public static class Calculate

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