VB.NET:中止FormClosing() [英] VB.NET: Abort FormClosing()

问题描述

我有一个要在应用程序关闭时运行的代码段.因此，我使用了FormCLosing事件.但是，现在我想发出一条确认消息以退出.就像，如果用户单击Exit(X)按钮，则会出现提示，如果他单击NO，则该应用程序将不会关闭并恢复到以前的状态.

I have a code snippet that I want to run when the app is closing. So, I used FormCLosing event. But now i wanna place a confirmation message for exiting. Like, if the user clicks the Exit(X) button, there'll be a prompt, if he clicks NO, then the app will not close and revert to previous state.

现在，我发现使用FormClosing事件很难实现.因为无论用户单击什么按钮，它都会执行. 有什么补救办法吗?

Now I find that hard to achieve using FormClosing event. because it'll get executed no matter what button the user clicks. Any remedy for that?

我的意思是，我需要一个像ExitButtonPressed()一样的东西.

I mean, I need an even like ExitButtonPressed()..

推荐答案

您可以尝试类似

Private Sub Form1_FormClosing(ByVal sender As System.Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles MyBase.FormClosing
    If (MessageBox.Show("Close?", "", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.No) Then
        e.Cancel = True
    End If
End Sub

看看

FormClosingEventArgs类

还有

CancelEventArgs.Cancel属性

可以通过设置取消活动 将Cancel属性设置为true.

The event can be canceled by setting the Cancel property to true.

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