什么是“价值”变量确实代表了内部类 [英] what does "value" variable really represents inside classes

问题描述

我正在阅读这篇关于在C＃https://msdn.microsoft.com/en-us/library/ms379572（v = vs.80）创建二进制树的文章.aspx

I am reading this article about creating binary trees in C# https://msdn.microsoft.com/en-us/library/ms379572(v=vs.80).aspx

在一个类中我发现它们指的是一个名为"value"的变量。在此声明中"data = value;"如下： -

and inside one class i find that they are referring to a variable named "value" inside this statement "data = value;" as follow:-

public class Node<T>
{
        // Private member-variables
        private T data;
        private NodeList<T> neighbors = null;

        public Node() {}
        public Node(T data) : this(data, null) {}
        public Node(T data, NodeList<T> neighbors)
        {
            this.data = data;
            this.neighbors = neighbors;
        }

        public T Value
        {
            get
            {
                return data;
            }
            set
            {
                data = value;
            }
        }

        protected NodeList<T> Neighbors
        {
            get
            {
                return neighbors;
            }
            set
            {
                neighbors = value;
            }
        }
    }
}

那么"价值"是什么？变量真的代表？因为我在类中找不到它的任何定义？

so what does the "value" variable really represents? as i can not find any definition for it inside the class?

推荐答案

这个例子有点令人困惑，因为他们使用了Value（带有大写V）属性名称。但这与'set'方法中的值（小写v）无关。

That example is a bit confusing because they used Value (with a capital V) as the property name. But this is nothing to with value (lower-case v) inside the 'set' method.

这是一个特殊的关键字，如文档
here 。

This is a special keyword as documented here.

它只存在于'set'方法中属性的简单表示正在设置的值。

It only exists inside the 'set' method of a property and simply represents the value that is being set.

示例：

public class Test
{
	private int _someNumber;

        public int SomeNumber
        {
            get
            {
                return _someNumber;;
            }
            set
            {
                _someNumber = value;
            }
        }

}

////////////////////

Test t = new Test();
t.SomeNumber = 6;	// At this point the set method will be called and value will be 6

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