C# static class constructor

Solution 1:

C# has a static constructor for this purpose.

static class YourClass
{
    static YourClass()
    {
        // perform initialization here
    }
}

From MSDN:

A static constructor is used to initialize any static data, or to perform a particular action that needs to be performed once only. It is called automatically before the first instance is created or any static members are referenced

MSDN link

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Solution 2:

A static constructor looks like this

static class Foo
{
    static Foo()
    {
         // Static initialization code here
    }
}

It is executed only once when the type is first used. All classes can have static constructors, not just static classes.