C#语法[0] [英] C# grammar[0]

问题描述

namespace sa
{
    public class Text
        {
            public class B
            {
            }
            public delegate void f(int a,int b);
            public void t(int x, int y)
            {
                Console.WriteLine((x+y));
            }
            public static void Main()
            { 
                B b=new B();
                Text text=new Text();
                text.t(2,3);
            }
        }
}

t()应该由文本对象使用.
为什么嵌套类B可以直接使用?
编译器是否将类B视为static ?

解决方案

您的主要方法是在Text类内定义的.因此，B类对它是直接可见的.

尝试将Main()移到另一个类中，它将对它不再直接可见.

shilf写道:

B类是编译器静态的吗?

B类不是静态的.您将无法做到
B b=new B();如果是这种情况.


对于嵌套类的不同示例，请此处.

namespace sa
{
    public class Text
        {
            public class B
            {
            }
            public delegate void f(int a,int b);
            public void t(int x, int y)
            {
                Console.WriteLine((x+y));
            }
            public static void Main()
            { 
                B b=new B();
                Text text=new Text();
                text.t(2,3);
            }
        }
}

t() should be used by the text object.
Why can the nested class B be used directly?
Is class B considered static by the compiler?

解决方案

Your main method is defined inside the class Text. So the B class is directly visible to it.

Try to move Main() into another class and it will be no more visible to it directly.

shilf wrote:

is class B static by compiler?

Class B is not static. You would not be able to do
B b=new B(); if this was the case.


For different samples on nested classes, have a look here.

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