如何在VB.NET中甚至退出FormClosed [英] How to Exit even FormClosed in VB.NET

问题描述

我有一个表单，并且我向事件FormClosed编写了代码.
在这种情况下，我会显示一条问题消息.如果用户选择否"，则此表单未关闭，否则关闭表单.
但我不愿意，请帮忙吗?

谢谢，

I have a form and I wrote code to event FormClosed.
in this event I display a question message.If user choose No, this form is not closed else close form.
but i do not handle if, so could help me, please?

thanks,

推荐答案

而不是处理FormClosed，而是处理FormClosing:

Instead of handling FormClosed, handle FormClosing:

private void myForm_FormClosing(object sender, FormClosingEventArgs e)
    {
    if (MessageBox.Show("Are you sure", "Close form", MessageBoxButtons.YesNo) != DialogResult.Yes)
        {
        e.Cancel = true;
        }
    }

糟糕！抱歉-我忘了你是VB:-O:

Oops! Sorry - I forgot you are VB :-O :

Private Sub myForm_FormClosing(sender As Object, e As FormClosingEventArgs)
    If MessageBox.Show("Are you sure", "Close form", MessageBoxButtons.YesNo) <> DialogResult.Yes Then
        e.Cancel = True
    End If
End Sub

[edit]添加了VB版本的代码-OriginalGriff [/edit]

[edit]Added VB version of code - OriginalGriff[/edit]

处理表单关闭事件，并在其中显示消息框，提示用户是否单击了make

handle form closing event and show messagebox there with your question if user clicks no make

e.Cancel=true;

，这将阻止表单关闭

除了格里夫的正确答案:您还应该检查事件参数的ClosingReason并取消仅针对ClosingReason.UserClosing的表单关闭.

—SA

In addition to correct answer by Griff: you should check up event argument''s ClosingReason and cancel form closing only for ClosingReason.UserClosing.

—SA

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