表格隐藏在背景中 [英] Form hiding in background

问题描述

我正在VB.net 2008中的一个项目上工作.从无模态表单中以模态形式打开表单时出现问题.我已经附加了一个项目来演示该问题.该演示包含具有以下特征的三种形式.

-"Form1"是演示应用程序的主要形式，

-通过"Form1"将"Form2"作为无模式表单打开.它是隐藏的(使用me.hide()方法)，而不是关闭，并且在"Form2"的关闭事件中取消关闭.

-通过"Form2"打开"Form3"作为模态形式.

现在的问题是，当我关闭"Form3"后隐藏"Form2"时，"Form1"也隐藏在后台(当其他一些窗口也打开时，即Windows资源管理器).我无法找到此行为的原因.这看起来像是一个常见问题，并且必须由其他人遇到，但是我无法在Internet上找到它.因此，请帮忙，因为我需要此问题的原因和解决方案.

问候，

Hassan

Hi,

I am working on a project in VB.net 2008. I have a problem arising while opening a form as modal from a modeless form. I have attached a project to demonstrate the problem. This demonstration contains three forms with following characteristics.

- "Form1" is main form of the demo application and

- "Form2" is opened as modeless form through "Form1". It is hidden (using me.hide() method) instead of closing and Cancel the closing in closing event of "Form2".

- "Form3" is opened as modal form through "Form2".

Now problem is when I hide "Form2" after closing "Form3", "Form1" also hides in the background (when some other windows are also open i.e. Windows explorer). I am unable to find a reason for this behavior. This should looks like a common problem and must be encountered by someone else but I am unable to find it on internet. So please help as I need reason and solution for this problem.

Regards,

Hassan

推荐答案

在隐藏form2之前插入此代码:

Owner.Focus()

这将为所有者(表单1)提供焦点，并且在隐藏表单2时可能会更改此行为.

Insert this before hiding form2:

Owner.Focus()

This will give the owner (form 1) the focus and may change this behavior when form 2 is hidden.

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