如何使用变量进行访问 [英] How acess a class,with variables

问题描述

如何在一个类中访问变量，这个类在另一个类中？

感谢您的注意。

解决方案

< blockquote>与Java不同，在C＃中没有隐式引用封闭类的实例。



您需要将这样的引用传递给嵌套类。一种典型的方法是通过嵌套类的构造函数。



这里有一个如何从嵌套类访问封闭类中的字段的示例。请看一下这篇文章：嵌套类的教程C＃ [ ^ ]

  public   partial   class  Form1：表单
 {
  private 嵌套m_Nested; 
 
  public  Form1（）
 {
 InitializeComponent（）; 
 
 m_Nested =  new 嵌套（ this ）; 
 m_Nested.Test（）; 
} 
 
 私有  class 嵌套
 {
  private  Form1 m_Parent; 
 
 受保护 Form1 Parent 
 {
  get  
 {
  return  m_Parent; 
} 
} 
 
  public 嵌套（Form1 parent）
 {
 m_Parent = parent ; 
} 
 
  public   void 测试（）
 {
  this  .Parent.textBox1.Text =  测试对父Form控件的访问; 
} 
} 
} 

How can i acess a variable inside a class,and this class is inside an another class?
Thanks for the atention.

解决方案

Unlike Java, in C# there is no implicit reference to an instance of the enclosing class.

You need to pass such a reference to the nested class. A typical way to do this is through the nested class's constructor.

Here an example of how to access field in the enclosing class from the nested class. Take a look at this article as well please: A Tutorial on Nested Classes in C#[^]

public partial class Form1 : Form
{
    private Nested m_Nested;

    public Form1()
    {
    	InitializeComponent();

    	m_Nested = new Nested(this);
    	m_Nested.Test();
    }

    private class Nested
    {
    	private Form1 m_Parent;

    	protected Form1 Parent
    	{
    		get
    		{
    			return m_Parent;
    		}
    	}

    	public Nested(Form1 parent)
    	{
    		m_Parent = parent;
    	}

    	public void Test()
    	{
    		this.Parent.textBox1.Text = "Testing access to parent Form's control";
    	}
    }
}

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