Question

在我的Powershell GUI中，我想按下一个按钮并打开记事本，而不会在后台关闭GUI。

对话框立即关闭，并显示以下代码

$button.Add_Click({Start-Process notepad.exe $file}) ;

使用-Wait时，对话框将保持打开状态，直到我关闭记事本，但仍然关闭

$button.Add_Click({Start-Process -Wait notepad.exe $file}) ;

使用变量时也会发生同样的情况

$button.Add_Click({& $notepad $file}) ;

以下是完整的代码块：

$file = '*\file.txt'

Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

$form = New-Object System.Windows.Forms.Form
$form.Text = "Don't close"
$form.Size = New-Object System.Drawing.Size(280,160)
$form.StartPosition = 'CenterScreen'
$form.FormBorderStyle = 'FixedDialog'
$form.Topmost = $true
$form.MaximizeBox = $false
$form.MinimizeBox = $false

$button = New-Object System.Windows.Forms.Button
$button.Location = New-Object System.Drawing.Point(20,40)
$button.Size = New-Object System.Drawing.Size(160,23)
$button.Text = "button"
$button.DialogResult = [System.Windows.Forms.DialogResult]::OK
$form.AcceptButton = $button
$form.Controls.Add($button)

$button.Add_Click({Start-Process -Wait notepad.exe $file}) ;

$form.ShowDialog()

我要去哪里错了？

Answer 1

这是因为您将按钮设置为表单的AcceptButton以及获取DialogResult的控件。

只需删除两行（为显示哪一行，我在下面添加注释的代码）。然后，也不要使用-Wait上的Start-Process开关。

调整后的代码：

$file = 'D:\blah.txt'

Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing

$form = New-Object System.Windows.Forms.Form
$form.Text = "Don't close"
$form.Size = New-Object System.Drawing.Size(280,160)
$form.StartPosition = 'CenterScreen'
$form.FormBorderStyle = 'FixedDialog'
$form.Topmost = $true
$form.MaximizeBox = $false
$form.MinimizeBox = $false

$button = New-Object System.Windows.Forms.Button
$button.Location = New-Object System.Drawing.Point(20,40)
$button.Size = New-Object System.Drawing.Size(160,23)
$button.Text = "button"
# drop these two lines
# $button.DialogResult = [System.Windows.Forms.DialogResult]::OK
# $form.AcceptButton = $button
$form.Controls.Add($button)

# do not use the -Wait parameter on Start-Process here
$button.Add_Click({Start-Process notepad.exe $file}) ;

$form.ShowDialog()
$form.Dispose()

当使用按钮执行应用程序时，Powershell防止关闭GUI

1 个答案: