使用从其他类类字段 [英] using class fields from other classes

问题描述

我很新的C＃和面向对象的，所以请多多包涵。

I'm quite new to C# and OOP so please bear with me.

我有两个班，不同的命名空间：

I have two classes with different namespaces:

namespace Class1

public class class1
{
 public double x;
 public double y;
}

...

namespace Class2

public class class2
{
 public double z = x + 5;
}

我创建了一个项目，称为添加和有一个按钮的形式。该按钮将增加的x，y和z。我的问题是：

I have created a project called add and have a form with a button. The button will add x, y and z. My questions are:

我如何使用Class2中域x以及如何使用领域的x，y和z下按钮单击事件？

How do I use field x in class2 and how do I use fields x, y and z under button click event?

推荐答案

您很可能希望有类2 取一个实例的 1级在其构造：

You'd probably want to have class2 take in an instance of class1 in its constructor:

public class class2
{
 private readonly class1 _c1;
 public class2(class1 c1) { _c1 = c1; }

 public double z = _c1.x + 5;
}

至于你会如何使用领域的x，y和z的一个按钮单击窗体中的事件，你只需进入公共领域的X，Y和1级和Class2中的实例Z：

As for how you'd use fields x,y and z with a button click event in a form, you would just access the public fields x, y and z on class1 and class2 instances:

protected void button_click(){
 class1 c1 = new class1();
 c1.x = 10;
 c1.y = 20;
 class2 c2 = new class2(c1);

 //do something with c1 and c2 now...
 Console.WriteLine("{0} {1} {2}", c1.x.ToString(), c1.y.ToString(), c2.z.ToString());
}

让我知道如果我误解你打算做什么。希望这有助于！

Let me know if I misunderstood what you're looking to do. Hope this helps!

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