Windows 表格 (Powershell) |消息框出现两次

Question

希望你们一切都好！

下面的消息框出现了两次，我不知道为什么。只有当我在按钮之间切换时才会发生这种情况。

你能帮我理解为什么吗？

 $ActiveDirectory.controls.AddRange(@($ToolsPanel,$ADToolsPanel,$VerUsersLabel,$VerUsersCancel,$VerUsersOK,$VerUsersTextBox,$FerLabelPanel))

$VerUsersOK.Add_Click({
    if ($VerUsersTextBox.Textlength -eq 0){
     
        [System.Windows.MessageBox]::Show('Não foi introduzida nenhuma informação',$ButtonText,'OK','Error')

    }  
    
})

})


$AlButton.Add_Click({


$ActiveDirectory.controls.Clear()
$AlUsersOptionsGroupbox.controls.AddRange(@($AlUsersUnlockCheckBox,$AlUsersDisableCheckBox,$AlUsersMustChangeCheckBox,$AlUsersEnableCheckBox))
$ActiveDirectory.controls.AddRange(@($ToolsPanel,$ADToolsPanel,$AlPasswordLabel,$AlPasswordTextBox,$AlUsersLabel,$AlUsersTextBox,$AlOKButton,$AlCancelButton,$AlCPasswordLabel,$AlCPasswordTextBox,$AlUsersOptionsGroupbox))

$AlOKButton.Add_Click({

    if (($AlUsersTextBox.TextLength -eq 0) -or ($AlPasswordTextBox.TextLength -eq 0) -or ($AlCPasswordTextBox.TextLength -eq 0)){

            $ButtonText = $AlButton.text
            [System.Windows.MessageBox]::Show('Não foi introduzida nenhuma informação',$ButtonText,'OK','Error')

    }
})

})

[void]$ActiveDirectory.ShowDialog()

Answer 1

如前所述，您将 $AlOKButton.Add_Click 嵌套在 $AlButton.Add_Click 中。每次单击 $AlButton 时，您都会向 $AlOKButton 添加一个侦听器。如果您点击 $AlButton 10 次，消息框将显示 10 次。

$AlButton.Add_Click({
  $ActiveDirectory.controls.Clear()
  $AlUsersOptionsGroupbox.controls.AddRange(@($AlUsersUnlockCheckBox,$AlUsersDisableCheckBox,$AlUsersMustChangeCheckBox,$AlUsersEnableCheckBox))
  $ActiveDirectory.controls.AddRange(@($ToolsPanel,$ADToolsPanel,$AlPasswordLabel,$AlPasswordTextBox,$AlUsersLabel,$AlUsersTextBox,$AlOKButton,$AlCancelButton,$AlCPasswordLabel,$AlCPasswordTextBox,$AlUsersOptionsGroupbox))
})

$AlOKButton.Add_Click({
  if (($AlUsersTextBox.TextLength -eq 0) -or ($AlPasswordTextBox.TextLength -eq 0) -or ($AlCPasswordTextBox.TextLength -eq 0)){
    $ButtonText = $AlButton.text
    [System.Windows.MessageBox]::Show('Não foi introduzida nenhuma informação',$ButtonText,'OK','Error')
  }
})

Windows 表格 (Powershell) |消息框出现两次

Windows Forms (Powershell) | Message Box showing up twice

powershell

windows-forms-designer