一个类如何可以访问一个窗体，而不是另一个窗体？ [英] How can a class be accessible for one form, and not for the other?

问题描述

我正在做一个非常基本的2d（自上而下）的游戏。因此我使用2种形式。一个用于UI（UIForm），另一个用于游戏的可视部分（Form1，也是要加载的第一个表单）。此外，我有一个类，它定义了不同的动物种类，并提供属性像大小。

I am making a very basic 2d (top-down) "game". Therefore I use 2 forms. One for the UI (UIForm) and the other one for the visual part of the game (Form1, also the first form to be loaded). Also I have a class wich defines different animal species and provides properties like the size.

但是，似乎我无法访问Spec1类从我Form1，

However, it seems like I cannot access the Species class from my Form1 since I have created UIForm (which has access to the species class).

这将产生一个IndexOutOfRange异常：

This will give an IndexOutOfRange exception:

private Species species = new Species();
int i = this.species.size[1];

这是有效的：

int i = UIForm.species.size[1];

这里我在UIForm中为了测试而使用了公共的类， 。这工作，所以我可以解决它，但如何解决这个问题？为什么会发生这种情况？

Here I have made species public in UIForm for the sake of testing and used that to access the class Species. This works, so I could work around it, but how do I fix this? And why does this happen?

我曾经能够在我制作UIForm之前从form1访问物种类。

I was used to be able to access the species class from form1 before i had made the UIForm.

对不起，如果我太模糊或者很明显，但我仍然是这个的noob。

I'm sorry if I am too vague or if it's very obvious, but I am still a noob at this.

（BTW没有线程正在进行）

(B.T.W. There is no threading going on)

推荐答案

它看起来好像物种是一个属性/字段在 UIForm ，并且当您在下一个表单中使用它时，您将一个新实例分配给变量。

it looks as though species is a property/field on UIForm and when you are using it in your next form, you are assigning a new instance of species to a variable.`

private Sepcies species = new Species() // wrong
private Species species = UIForm.species // possibly right

或更好

private Species GetUISpecies()
{
    return UIForm.species;
}

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