C#GUI多形式子父母 [英] c# gui multi forms child parent

问题描述

你好，我是C#的初学者，我有一个具有2种形式的GUI应用程序，当我关闭孩子时，我想能够
父表单也会自动关闭吗?
谢谢.

Hello i am a beginner at c#, I have a GUI application with 2 forms and i wanna be able when i close the child that the
parent form will automatically close also?
Thanks.

推荐答案

看看使用Eventhandler处理关闭事件(如^ ]).

Have a look at using an Eventhandler for the close event (as described here[^]).

句柄

Handle FormClosed[^] event.

In your code, you can do something like this:

LoginForm loginForm = new LoginForm();
loginForm.FormClosed += new FormClosedEventHandler(this.LoginForm_FormClosed);

...

void LoginForm_FormClosed(object sender, FormClosedEventArgs e)
{
  MessageBox.Show("LoginForm has closed, with reason: " + e.CloseReason);
}

让我们的方法符合逻辑.如果只有两种形式，并且您想同时关闭这两种形式，则意味着您要退出该应用程序.现在，其中一种形式是主要形式.它在调用Application.Run时定义.用作参数的形式成为主要形式.如果您关闭主窗体应用程序，则仍然存在.您只需要注意第二种形式.

覆盖其虚拟OnFormClosed方法:

Let''s approach logically. If there are only two forms, and you want to close both, it means you want to exit the application. Now, one of the forms is a main one; it it defined when Application.Run is called. The form used as an argument becomes main. If you close a main form application exist anyway. You only need to take care about your second form.

Overrides its virtual OnFormClosed method:

//only for non-main form:
protected override void OnFormClosed(FormClosedEventArgs e) {
   Application.Exit();
}

—SA

—SA

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