Constructor Vs Static Constructor


A Constructor is usually used to initialize data. However Static Constructor is used to initialize only static members. Here I am just talking about the Constructors. How they get initialized and how they behave.

Things to know about Static Constructor

  1. It is used to initialize static data members. 
  2. Can't access anything but static members.
  3. Can't have parameters
  4. Can't have access modifiers like Public, Private or Protected.
Now once you understand the above points, you can appreciate the difference between Static Class and Unstatic Class
  1. Static Class cannot be instantiated unlike the unstatic class. You should directly access its Method via the ClassName.MethodName
  2. A Program can't tell when it is going to load static class but its definitely loaded before the call.
  3. A Static class will always have the static constructor and its called only once since after that its in the memory for its lifetime.
  4. A Static class can contain only static members. So all the members and functions have to be static.
  5. A Static class is always sealed since it cannot be inherited further. Further they cannot inherit form any other class (except Object)

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