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powershell - 为什么这个 powershell 代码片段不起作用？

问题描述

这个特殊的powershell代码对我不起作用，我想知道我在这里做错了什么（我正在学习Powershell - 我对它很陌生）

Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing
$main_form = New-Object System.Windows.Forms.Form
$main_form.Text = "Testing"
$main_form.Width = 500
$main_form.height = 300
$main_form.FormBorderStyle = "FixedDialog"
$main_form.AutoSize = $true
$main_form.MaximizeBox = $false
$main_form.MinimizeBox = $false

#
$SetCheckBox = New-Object System.Windows.Forms.Checkbox
$SetCheckBox.Location = New-Object System.Drawing.Point(10,10)
$SetCheckBox.Size = New-Object System.Drawing.Size(60,20)
$SetCheckBox.Text = "Set"
$main_form.Controls.Add($SetCheckBox)

if($SetCheckBox.Checked -eq $true){
    $SetButton = New-Object System.Windows.Forms.Button
    $SetButton.Location = New-Object System.Drawing.Point(280,200)
    $SetButton.Size = New-Object System.Drawing.Size(100,20)
    $SetButton.Text = "Nothing Selected"
    $SetButton.AutoSize = $true
    $main_form.Controls.Add($SetButton)
}else{

}

$RefreshButton = New-Object System.Windows.Forms.Button
$RefreshButton.Location = New-Object System.Drawing.Point(400,285)
$RefreshButton.Size = New-Object System.Drawing.Size(100,20)
$RefreshButton.Text = "Refresh"
$RefreshButton.AutoSize = $true
$main_form.Controls.Add($RefreshButton)

$RefreshButton.Add_Click({
    $main_form.Refresh()
})
#

$main_form.Topmost = $true
$main_form.ShowDialog()

我希望它在“$SetCheckBox.Checked”等于 $true“时向我的表单添加一个按钮，但没有任何反应。没有错误代码或任何东西。也许这不是 Powershell 的工作方式？

标签： powershell

解决方案

问题是您已经完成了所有设置，只是位置不正确。您需要在按钮按下时包含 if 语句才能对其进行操作。我不需要输入Refresh()，但我只在 ISE 中进行了测试。这目前对我有用：

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

$main_form = New-Object System.Windows.Forms.Form
$main_form.Text = "Testing"
$main_form.Width = 500
$main_form.height = 300
$main_form.FormBorderStyle = "FixedDialog"
$main_form.AutoSize = $true
$main_form.MaximizeBox = $false
$main_form.MinimizeBox = $false

$SetCheckBox = New-Object System.Windows.Forms.Checkbox
$SetCheckBox.Location = New-Object System.Drawing.Point(10,10)
$SetCheckBox.Size = New-Object System.Drawing.Size(60,20)
$SetCheckBox.Text = "Set"
$main_form.Controls.Add($SetCheckBox)

$RefreshButton = New-Object System.Windows.Forms.Button
$RefreshButton.Location = New-Object System.Drawing.Point(400,285)
$RefreshButton.Size = New-Object System.Drawing.Size(100,20)
$RefreshButton.Text = "Refresh"
$RefreshButton.AutoSize = $true
$main_form.Controls.Add($RefreshButton)

$RefreshButton.Add_Click({
    if($SetCheckBox.Checked -eq $true){
        Write-Host "testing"
        $SetButton = New-Object System.Windows.Forms.Button
        $SetButton.Location = New-Object System.Drawing.Point(280,200)
        $SetButton.Size = New-Object System.Drawing.Size(100,20)
        $SetButton.Text = "Nothing Selected"
        $SetButton.AutoSize = $true
        $main_form.Controls.Add($SetButton)
    }else{
        Write-Host "testing2"
    }
})

$main_form.Topmost = $true
$main_form.ShowDialog()

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