如何获得或杀死某些类的所有实例？ [英] How to get or Kill all instances from certain class?

问题描述

我怎样才能从某一类的所有实例或杀死特定类的所有实例？

How can I get all instances from a certain class or kill all instances of certain class?

例如，我有一个类 MyClass的我intantiate三倍 M1 ， 2 和 M3 。

For Example, I've a Class MyClass which I intantiate three times as m1, m2 and m3.

有没有一种方法来获取或杀死所有这些情况？

Is there a way to get or kill all these instances?

更多的澄清：当我有一个设置表类。当用户点击设置按钮的应用使得这一类的实例。当他点击该按钮再次它使新实例。我想它，而不是只显示第一个实例，使新的实例

more clarification : when I've a "settings form" class. When the user click Settings button the application makes instance from this class. When he clicks the same button again it makes new instance. I want it show the 1st instance only and not making new instance

推荐答案

这并不是说我知道，但你可以保存例如，当构建的某种收集的对象，这样你就可以访问所有实例后：

Not that i'm aware, but you can save the instance when constructing the object on some sort of collection so you can access all instances later:

public class MyClass {
    public static List<MyClass> instances = new List<MyClass>();
    public MyClass() {
        instances.Add(this);
    }
}

编辑：

保存设置类作为一个字段的形式，并单击按钮时，检查是否该字段为空;如果是这样，实例化

Save the settings class as a field for the form, and when clicking button, check if that field is null; if so, instantiate

public class Form1 : Form {
    private SettingsClass settings;

    ...
    ...

    private void btnSettings_Click(object sender, EventArgs e) {
        if (settings == null) {
            settings = new SettingsClass();
        } else {
            // do nothing, already exists
        }

        // use settings object
    }
}

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