When is a C# Static Constructor Called?

When is a Static Constructor Invoked in C#?

In C#, the execution of a static constructor differs from that of instance constructors. When working with static constructors, it's important to understand their specific invocation pattern.

Static Constructor Invocation

A static constructor is executed only once, specifically when the type is first accessed. This could be:

• When an instance of the containing class is created.
• When a static member of the class is accessed (field, property, or method).

Therefore, the answer is:

When the class is accessed for the first time.

Additional Information

Static constructors are used to perform actions that should only occur once per type, such as:

• Initialization of static data
• Registration of event handlers
• Execution of code that depends on other types being loaded

Please refer to the Microsoft documentation on [Static Constructors (C# Programming Guide)](https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/static-constructors) for further details.

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