What is a static constructor?

Static constructors are introduced with C# to initialize the static data of a class. CLR calls the static constructor before the first instance is created.

The static constructor has the following features:

• No access specifier is required to define it.
• You cannot pass parameters in static constructor.
• A class can have only one static constructor.
• It can access only static members of the class.
• It is invoked only once, when the program execution begins.