如何访问不同类的值。 [英] How to access the value of different classes.

问题描述

我有3个课程如下。

i have 3 classes as follows.

class a
{
   string access;
    
   public void setaccess(string c)
   {
      this.access = c;
   }
   public string getaccess()
   {
      return this.access;
   }
}

class b: a
{
   setaccess("test");
}
//Form class
class c
{
   a aa = new a();
   string bb = aa.getaccess();
   messagebox.show(bb);
}

我希望类b更新类a中变量access的值，并更新要在类c中显示的值。现在，当我运行应用程序时，消息框为空。谁能帮帮我吗。我无法弄清楚我做错了什么。

i want the class b to update the value of variable "access" in class a and the updated value to be shown in class c. Right now when i run the application the messagebox is empty. Can anyone please help me. I can not figure out what am i doing wrong.

推荐答案

试试这个

Try this

b aa = new b();
   string bb = aa.getaccess();
   messagebox.show(bb);

试试这个

try this

public class a
    {

        string access;

        public void setaccess(string c)
        {
            this.access = c;
        }

        public string getaccess()
        {
            return this.access;
        }

    }

    public class b : a
    {
        public b()
            : base()
        {
            setaccess("updated");
        }

    }

    //Form class
    public class c
    {

       
        public void test()
        {

            b aa = new b();
            string bb = aa.getaccess();
            messagebox.show(bb);
        }
    }

试用此代码

Try This Code

// Create b class object because your are setting values of class a var in b class
    public class c
    {
        public void test()
        {
            b aa = new b();
            string bb = aa.getaccess();
            messagebox.show(bb);
        }
    }

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