c# - 如何使用反射调用静态构造函数？

Question

如何获取静态构造函数的 ConstructorInfo？

public class MyClass 
{
    public static int SomeValue;

    static MyClass() 
    {
        SomeValue = 23;
    }
}

我尝试了以下但失败了......

Type myClass = typeof (MyClass);

// throws exception
myClass.TypeInitializer.Invoke(null);

// returns null (also tried deleting  BindingFlags.Public
ConstructorInfo ci = myClass.GetConstructor(
    BindingFlags.Static | BindingFlags.Public,\
    System.Type.DefaultBinder,
    System.Type.EmptyTypes,
    null);

// returns empty array
ConstructorInfo[] clutchingAtStraws = myClass.GetConstructors
   (BindingFlags.Static | BindingFlags.Public);

Answer 1

还有System.Runtime.CompilerServices.RuntimeHelpers.RunClassConstructor(RuntimeTypeHandle type) ，它还保证静态构造函数只被调用一次，而不管该方法被调用了多少次:

Type myClass = typeof(MyClass);
System.Runtime.CompilerServices.RuntimeHelpers.RunClassConstructor(myClass.TypeHandle);

Reference