不存储来自 powershell .Net 代码的变量

不存储来自 powershell .Net 代码的变量

我有以下代码,但它没有将选择保存到变量中。我在这方面不是最擅长的,所以请帮忙。

它应该将选择保存到 $x 变量中,然后在最后一行吐出选择。

[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing") 

$objForm = New-Object System.Windows.Forms.Form 
$objForm.Text = "Select a Computer"
$objForm.Size = New-Object System.Drawing.Size(300,200) 
$objForm.StartPosition = "CenterScreen"

$objForm.KeyPreview = $True
$objForm.Add_KeyDown({if ($_.KeyCode -eq "Enter") 
    {$x=$objListBox.SelectedItem;$objForm.Close()}})
$objForm.Add_KeyDown({if ($_.KeyCode -eq "Escape") 
    {$objForm.Close()}})

$OKButton = New-Object System.Windows.Forms.Button
$OKButton.Location = New-Object System.Drawing.Size(75,120)
$OKButton.Size = New-Object System.Drawing.Size(75,23)
$OKButton.Text = "OK"
$OKButton.Add_Click({$x=$objListBox.SelectedItem;$objForm.Close()})
$objForm.Controls.Add($OKButton)

$CancelButton = New-Object System.Windows.Forms.Button
$CancelButton.Location = New-Object System.Drawing.Size(150,120)
$CancelButton.Size = New-Object System.Drawing.Size(75,23)
$CancelButton.Text = "Cancel"
$CancelButton.Add_Click({$objForm.Close()})
$objForm.Controls.Add($CancelButton)

$objLabel = New-Object System.Windows.Forms.Label
$objLabel.Location = New-Object System.Drawing.Size(10,20) 
$objLabel.Size = New-Object System.Drawing.Size(280,20) 
$objLabel.Text = "Please select a computer:"
$objForm.Controls.Add($objLabel) 

$objListBox = New-Object System.Windows.Forms.ListBox 
$objListBox.Location = New-Object System.Drawing.Size(10,40) 
$objListBox.Size = New-Object System.Drawing.Size(260,20) 
$objListBox.Height = 80

[void] $objListBox.Items.Add("atl-dc-001")
[void] $objListBox.Items.Add("atl-dc-002")
[void] $objListBox.Items.Add("atl-dc-003")
[void] $objListBox.Items.Add("atl-dc-004")
[void] $objListBox.Items.Add("atl-dc-005")
[void] $objListBox.Items.Add("atl-dc-006")
[void] $objListBox.Items.Add("atl-dc-007")

$objForm.Controls.Add($objListBox) 

$objForm.Topmost = $True

$objForm.Add_Shown({$objForm.Activate()})
[void] $objForm.ShowDialog()

$x

提前致谢 :)

答案1

它存储在$objListBox变量中。您可以通过选择SelectedItem属性来调用它。因此,如果您希望$x变量返回所选值,请用以下内容填充它 $objListBox.SelectedItem

    $x = $objListBox.SelectedItem
    $x
    atl-dc-002

您可以使用Get-Membercmd-let 检查 powershell 对象的各种属性、方法事件。

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