您有一些所谓的 的ApplicationContext 为

You have something called the ApplicationContext for that.

使用这样的：

ApplicationContext applicationContext = new ApplicationContext();

FormX formX = new FormX(applicationContext);
applicationContext.MainForm = formX;

Application.Run(applicationContext);

在结束 Form1中，拱手的MainForm

FormY formY = new FormY(applicationContext);
applicationContext.MainForm = formY;

另一种方法是使静态的ApplicationContext 。这不会要求各地传递给它。

Another option is to make a static ApplicationContext. That wouldn't require passing it around.