关闭所有表格-主表格和子表格 [英] close all forms-main and sub

问题描述

我有这个问题.我想知道程序是否有办法检测用户是否单击了关闭按钮(窗口右上角的X按钮)?在子表单上说

然后程序将关闭主窗体和所有其他子窗体....


请..帮助..


谢谢...

解决方案

容易-在构造子窗体FormClosed事件时(在使用Show函数之前)将处理程序添加到子窗体FormClosed事件中. 在处理程序中，关闭当前表单.


[edit]忘记了FormClosed ...的Form部分...-OriginalGriff [/edit]

您需要覆盖方法System.Windows.Forms.OnFormClosing.您可以取消关闭表单，而将事件参数参数的属性Cancel分配给true.您可以通过处理事件System.Windows.Forms.FormClosing获得相同的效果.您还可以检查在相同参数中传递的关闭原因并采取相应措施.

事件System.Windows.Forms.FormClosed也会检测到"它，但是现在更改或取消为时已晚，无论如何该表单都将关闭.

—SA

我会使用my.application.openforms

在窗体上的关闭事件调用使用my.application.openforms
的常规
Openforms [ 解决方案

Easy - add a handler to the sub form FormClosed event when you construct it (and before you use the Show function).
In the handler, close the current form.


[edit]Forgot the Form part of FormClosed... - OriginalGriff[/edit]

You need to override the method System.Windows.Forms.OnFormClosing. You may cancel closing the form my assigning true the the property Cancel of event arguments parameter. You can get the same effect by handling the event System.Windows.Forms.FormClosing. You can also check the closing reason passed in the same argument and act accordingly.

The event System.Windows.Forms.FormClosed will "detect" it, too, but this is too late to change or cancel — the form will be closed anyway.

—SA

I would use the my.application.openforms

on the form close events call a rountine that uses the my.application.openforms

Openforms[^]

you will need to enumerate that form collection but remember to the active form last.

this way you can also perform any save / delete functions that you want before the form is closed.

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