Question

我试图让用户有机会取消MDI父母的表态,把一个“你肯定吗?”的ms箱放在一个电子背书上,然而,当MDI父母援引表格时,所有MDI儿童首先在ms箱出现之前就关闭了。

我很想知道,在我得到积极反应以结束并进而把所有近亲事件推向儿童之前,防止儿童关闭,而不是强迫每个儿童戴头巾是否容易。

EDIT: I guess the only solution I can find is adding If e.CloseReason = CloseReason.MdiFormClosing Then e.Cancel = True to the FormClosing event and using ApplicationExit instead.

Answer 1

If e.CloseReason = CloseReason.MdiFormClosing Then
   e.Cancel = True
End If

如果你能够从事申请工作。每当你打着香料,就会停用。

Answer 2

父母的起步

    frmMdiChild1.MdiParent = Me
    frmMdiChild1.Show()

Add Formclos Sub

Private Sub frmMdiChild1_FormClosing(sender As Object, e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
    If e.CloseReason = CloseReason.UserClosing Then
        e.Cancel = True
    End If
End Sub

@Theveloper: 我尝试了。 MdiFormClosing, but it don t work. 为了查明什么用途,我是一名CloseReason女士。而且,只有例如Cancel = 真实性,才能防止父母关闭(离婚)。

(vb.net 2010)

Answer 3

普通学校变式

Public Shared mdi_main As mdiMain

初中

进口系统:Windows.Forms

公共学校

Public forced_close As Boolean = False

Private Sub mdiMain_FormClosing(sender As Object, e As FormClosingEventArgs) Handles MyBase.FormClosing
    e.Cancel = True
    If MsgBox("Are you sure you want to exit?", MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then
          Close all child forms of the parent.
        For Each ChildForm As Form In Me.MdiChildren
            ChildForm.Close()
        Next
        e.Cancel = False
    End If
End Sub

初中

Public Class frmMember

Private Sub frmMember_FormClosing(sender As Object, e As FormClosingEventArgs) Handles MyBase.FormClosing
    Select Case e.CloseReason
        Case CloseReason.UserClosing
            e.Cancel = True
            If Not clsGlobalVariables.mdi_main.forced_close Then
                If MsgBox("Are you sure you want to close?", MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then
                    e.Cancel = False
                End If
            End If
        Case Else
            clsGlobalVariables.mdi_main.forced_close = True
            e.Cancel = True
    End Select
End Sub

初中

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