如何用PowerShell关闭主窗体并调用另一个窗体？

Add-Type -AssemblyName System.Windows.Forms

$mainForm = New-Object System.Windows.Forms.Form
$mainForm.Text = "主窗体"

$button = New-Object System.Windows.Forms.Button
$button.Text = "打开另一个窗体"
$button.Add_Click({
    $mainForm.Close()
    Start-Process powershell.exe -ArgumentList "-File SecondForm.ps1"
})

$mainForm.Controls.Add($button)

$mainForm.ShowDialog()

Add-Type -AssemblyName System.Windows.Forms

$secondForm = New-Object System.Windows.Forms.Form
$secondForm.Text = "第二个窗体"

$secondForm.ShowDialog()