c# - C#中类的默认访问修饰符

Question

C# 中类的默认访问修饰符是 internal。 但是在用 ildasm 检查类时，它显示类是私有(private)的。

.class private auto ansi beforefieldinit ConsoleApplication1.Program
    extends [mscorlib]System.Object
    {
    } // end of class ConsoleApplication1.Program

知道为什么吗？

Answer 1

IL 没有internal 的概念，如果内部类在根命名空间中则表示为private，如果在根命名空间中则表示为assembly嵌套在另一种类型中。

namespace ConsoleApplication1
{
    internal class ExplicitInternal
    {
        private class ExplicitPrivate
        {
        }

        internal class ExplicitNestedInternal
        {
        }

        public class ExplicitNestedPublic
        {
        }
    }

    public class ExplicitPublic
    {
    }

    class ImplicitInternal
    {
        private class ImplicitPrivate
        {
        }
    }
}

成为

.namespace ConsoleApplication1
{
    .class private auto ansi beforefieldinit ConsoleApplication1.ExplicitInternal
        extends [mscorlib]System.Object
    {
        .class nested private auto ansi beforefieldinit ExplicitPrivate
            extends [mscorlib]System.Object
        {
        }

        .class nested assembly auto ansi beforefieldinit ExplicitNestedInternal
            extends [mscorlib]System.Object
        {
        }

        .class nested public auto ansi beforefieldinit ExplicitNestedPublic
            extends [mscorlib]System.Object
        {
        }
    }

    .class public auto ansi beforefieldinit ConsoleApplication1.ExplicitPublic
        extends [mscorlib]System.Object
    {
    }

    .class private auto ansi beforefieldinit ConsoleApplication1.ImplicitInternal
        extends [mscorlib]System.Object
    {
        .class nested private auto ansi beforefieldinit ImplicitPrivate
            extends [mscorlib]System.Object
        {
        }
    }
}