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marion
Asked: 2025-04-19 20:32:55 +0800 CST

如何修复 Powershell 按钮选择问题？

  • 772

我使用 ChatGPT 生成了代码，以便了解如何自行操作，而且基本上可以正常工作。该脚本用于检查我的电视和电影文件夹中是否存在缺失的文件（folder.jpg、theme.mp3 等），以便 Plex 更好地工作，并显示哪些文件缺失以及缺失的数量。

它在电影文件夹上运行得很好，但我（AI 也不能）想出如何修复它来单击电视或电视结束按钮并让它搜索这些文件夹。

我最好的猜测是第 167 行的 $pathMap 变量是关键，并且它没有正确更新此部分 - $global:fixedPath = $pathMap

有人可以纠正它并向我解释如何解决这个问题吗？

Windows 10 22H2 和 Powershell PSVersion 5.1.19041.5737

    Add-Type -AssemblyName System.Windows.Forms
    Add-Type -AssemblyName System.Drawing
    
    # Create form
    $form = New-Object System.Windows.Forms.Form
    $form.Text = "Marion's Plex checker"
    $form.Size = New-Object System.Drawing.Size(700, 700)
    $form.StartPosition = "CenterScreen"
    
    # Fixed folder path
    $fixedPath = "D:\ServerFolders\Videos\02 - Movies"
    
    # Path label
    $label = New-Object System.Windows.Forms.Label
    $label.Text = "Checking subfolders in: $fixedPath"
    $label.Location = New-Object System.Drawing.Point(120, 20)
    $label.Size = New-Object System.Drawing.Size(550, 20)
    $form.Controls.Add($label)
    
    # Summary label
    $summaryLabel = New-Object System.Windows.Forms.Label
    $summaryLabel.Text = ""
    $summaryLabel.Location = New-Object System.Drawing.Point(120, 45)
    $summaryLabel.Size = New-Object System.Drawing.Size(550, 20)
    $form.Controls.Add($summaryLabel)
    
    # Output box
    $logBox = New-Object System.Windows.Forms.TextBox
    $logBox.Multiline = $true
    $logBox.ScrollBars = "Vertical"
    $logBox.Location = New-Object System.Drawing.Point(120, 75)
    $logBox.Size = New-Object System.Drawing.Size(550, 350)
    $logBox.Anchor = "Top,Bottom,Left,Right"
    $logBox.ReadOnly = $true
    $form.Controls.Add($logBox)
    
    # Search file buttons (on the left)
    $fileTypes = @("theme.mp3", "folder.jpg", "background.jpg", "poster.jpg")
    $fileButtons = @{}
    $yPos = 20
    $global:selectedFile = "theme.mp3"
    
    foreach ($file in $fileTypes) {
        $btn = New-Object System.Windows.Forms.Button
        $btn.Text = $file
        $btn.Tag = $file
        $btn.Location = New-Object System.Drawing.Point(10, $yPos)
        $btn.Size = New-Object System.Drawing.Size(100, 30)
        $form.Controls.Add($btn)
        $fileButtons[$file] = $btn
        $yPos += 40
    
        $btn.Add_Click({
            $global:selectedFile = $this.Tag
    
            # Reset styles
            foreach ($b in $fileButtons.Values) {
                $b.UseVisualStyleBackColor = $true
            }
    
            # Highlight selected
            # Reset styles
            foreach ($b in $fileButtons.Values) {
                $b.UseVisualStyleBackColor = $true
                $b.BackColor = [System.Drawing.SystemColors]::Control
            }
    
            # Highlight selected
            $this.UseVisualStyleBackColor = $false
            $this.BackColor = 'LightBlue'
    
            $summaryLabel.Text = "Selected file: $global:selectedFile"
        })
    }
    
    # Scan button
    $scanButton = New-Object System.Windows.Forms.Button
    $scanButton.Text = "Scan"
    $scanButton.Location = New-Object System.Drawing.Point(10, 440)
    $scanButton.Size = New-Object System.Drawing.Size(100, 30)
    $form.Controls.Add($scanButton)
    
    # Create a new button for Movies, positioned to the right of the Scan button
    $moviesButton = New-Object System.Windows.Forms.Button
    $moviesButton.Text = "Movies"
    $moviesButton.Size = New-Object System.Drawing.Size(100, 30)
    $moviesButton.Location = New-Object System.Drawing.Point(120, 440)
    
    # Create a new button for TV, positioned next to the Movies button
    $tvButton = New-Object System.Windows.Forms.Button
    $tvButton.Text = "TV"
    $tvButton.Size = New-Object System.Drawing.Size(100, 30)
    $tvButton.Location = New-Object System.Drawing.Point(230, 440)
    
    # Create a new button for TV Ended, positioned next to the TV button
    $tvEndedButton = New-Object System.Windows.Forms.Button
    $tvEndedButton.Text = "TV Ended"
    $tvEndedButton.Size = New-Object System.Drawing.Size(100, 30)
    $tvEndedButton.Location = New-Object System.Drawing.Point(340, 440)  # Right of the TV button
    $tvEndedButton.Add_Click({
        Start-Process "D:\ServerFolders\Videos\TV (Ended)"  # Link to the TV Ended path
    })
    $form.Controls.Add($tvEndedButton)
    
    # Path variables for Movies, TV, and TV Ended
    $pathMap = @{
        "Movies"     = "D:\ServerFolders\Videos\02 - Movies"
        "TV Current" = "D:\ServerFolders\Videos\01 - TV"
        "TV Ended"   = "D:\ServerFolders\Videos\TV (Ended)"
    }
    
    # Default path for Movies
    $global:fixedPath = $pathMap["Movies"]
    $pathLabel.Text = "Scanning path: $global:fixedPath"
    
    # Add click event for Movies button
    $moviesButton.Add_Click({
        $global:fixedPath = $pathMap["Movies"]
        $pathLabel.Text = "Scanning path: $global:fixedPath"
        # Change button colors to indicate active path
        $moviesButton.BackColor = 'LightGreen'
        $tvButton.BackColor = [System.Drawing.SystemColors]::Control
        $tvEndedButton.BackColor = [System.Drawing.SystemColors]::Control
        # Start scanning the Movies path
        Write-Host "Scanning Movies path: $global:fixedPath"
        Scan-Folder -path $global:fixedPath
    })
    
    # Add click event for TV button
    $tvButton.Add_Click({
        $global:fixedPath = $pathMap["TV Current"]
        $pathLabel.Text = "Scanning path: $global:fixedPath"
        # Change button colors to indicate active path
        $tvButton.BackColor = 'LightGreen'
        $moviesButton.BackColor = [System.Drawing.SystemColors]::Control
        $tvEndedButton.BackColor = [System.Drawing.SystemColors]::Control
        # Start scanning the TV Current path
        Write-Host "Scanning TV path: $global:fixedPath"
        Scan-Folder -path $global:fixedPath
    })
    
    # Add click event for TV Ended button
    $tvEndedButton.Add_Click({
        $global:fixedPath = $pathMap["TV Ended"]
        $pathLabel.Text = "Scanning path: $global:fixedPath"
        # Change button colors to indicate active path
        $tvEndedButton.BackColor = 'LightGreen'
        $moviesButton.BackColor = [System.Drawing.SystemColors]::Control
        $tvButton.BackColor = [System.Drawing.SystemColors]::Control
        # Start scanning the TV Ended path
        Write-Host "Scanning TV Ended path: $global:fixedPath"
        Scan-Folder -path $global:fixedPath
    })
    
    # Function to scan the folder
    function Scan-Folder {
        param(
            [string]$path
        )
        Write-Host "Scanning folder: $path"
        # Insert the actual folder scanning logic here
    }
    
    
    # Path variables for Movies, TV, and TV Ended
    $pathMap = @{
        "Movies"     = "D:\ServerFolders\Videos\02 - Movies"
        "TV Current" = "D:\ServerFolders\Videos\01 - TV"
        "TV Ended"   = "D:\ServerFolders\Videos\TV (Ended)"
    }
    
    # Default path for Movies
    $global:fixedPath = $pathMap["Movies"]
    
    # Add click event for Movies button
    $moviesButton.Add_Click({
        $global:fixedPath = $pathMap["Movies"]
        $pathLabel.Text = "Scanning path: $global:fixedPath"
        # Change button colors to indicate active path
        $moviesButton.BackColor = 'LightGreen'
        $tvButton.BackColor = [System.Drawing.SystemColors]::Control
        $tvEndedButton.BackColor = [System.Drawing.SystemColors]::Control
        # Trigger the scanning logic
        Scan-Folder -path $global:fixedPath
    })
    
    # Add click event for TV button
    $tvButton.Add_Click({
        $global:fixedPath = $pathMap["TV Current"]
        $pathLabel.Text = "Scanning path: $global:fixedPath"
        # Change button colors to indicate active path
        $tvButton.BackColor = 'LightGreen'
        $moviesButton.BackColor = [System.Drawing.SystemColors]::Control
        $tvEndedButton.BackColor = [System.Drawing.SystemColors]::Control
        # Trigger the scanning logic
        Scan-Folder -path $global:fixedPath
    })
    
    # Add click event for TV Ended button
    $tvEndedButton.Add_Click({
        $global:fixedPath = $pathMap["TV Ended"]
        $pathLabel.Text = "Scanning path: $global:fixedPath"
        # Change button colors to indicate active path
        $tvEndedButton.BackColor = 'LightGreen'
        $moviesButton.BackColor = [System.Drawing.SystemColors]::Control
        $tvButton.BackColor = [System.Drawing.SystemColors]::Control
        # Trigger the scanning logic
        Scan-Folder -path $global:fixedPath
    })
    
    # Function to scan the folder
    function Scan-Folder {
        param(
            [string]$path
        )
        Write-Host "Scanning folder: $path"
        # Insert the actual scanning logic here to process the folder
    }
    
      # Right of the Movies button
    $tvButton.Add_Click({
        Start-Process "D:\ServerFolders\Videos\01 - TV"  # Link to the TV path
    })
    $form.Controls.Add($tvButton)
      # Right of the Scan button
    $moviesButton.Add_Click({
        Start-Process "D:\ServerFolders\Videos\02 - Movies"  # Link to the Movies path
    })
    $form.Controls.Add($moviesButton)
    
    
    # Globals
    $global:missingItems = @()
    
    function Run-Scan {
        $logBox.Clear()
        $summaryLabel.Text = ""
        $log = @()
        $logPath = Join-Path $fixedPath "missing_${global:selectedFile}_log.txt"
        $csvPath = Join-Path $fixedPath "missing_${global:selectedFile}_report.csv"
        $global:missingItems = @()
    
        if (-not (Test-Path $fixedPath)) {
            [System.Windows.Forms.MessageBox]::Show("Invalid folder path.", "Error", [System.Windows.Forms.MessageBoxButtons]::OK, [System.Windows.Forms.MessageBoxIcon]::Error)
            return
        }
    
        $folders = Get-ChildItem -Path $fixedPath -Directory
    
        foreach ($folder in $folders) {
            $targetFile = Join-Path $folder.FullName $global:selectedFile
            if (-not (Test-Path -LiteralPath $targetFile)) {
                $global:missingItems += $folder
                $logLine = "$($folder.Name)"
                $logBox.AppendText($logLine + "`r`n")
                $log += $logLine
            }
        }
    
        if ($global:missingItems.Count -eq 0) {
            $summaryLabel.Text = "All folders have $($global:selectedFile)."
        } else {
            $summaryLabel.Text = "Missing $($global:selectedFile) from [$($global:missingItems.Count)] folders."
        }
    
        $log | Out-File -FilePath $logPath -Encoding UTF8
    
        $logBox.AppendText("`r`nLog saved to: $logPath`r`n")
        $exportButton.Enabled = $global:missingItems.Count -gt 0
    }
    
    $scanButton.Add_Click({ Run-Scan })
    
    
    # Export to CSV button
    $exportButton = New-Object System.Windows.Forms.Button
    $exportButton.Text = "Export to CSV"
    $exportButton.Location = New-Object System.Drawing.Point(10, 400)
    $exportButton.Size = New-Object System.Drawing.Size(100, 30)
    $exportButton.Enabled = $false
    $form.Controls.Add($exportButton)
    
    $exportButton.Add_Click({
        $csvPath = Join-Path $fixedPath "missing_$($global:selectedFile)_report.csv"
    
        $csvPath = Join-Path $fixedPath "missing_$($global:selectedFile)_report.csv"
        $headerLines = @(
            "File type: $($global:selectedFile)",
            "Total missing: $($global:missingItems.Count)`r`n"
        )
        $headerLines | Out-File -FilePath $csvPath -Encoding UTF8
    
        $global:missingItems | ForEach-Object {
            [PSCustomObject]@{ FolderName = $_.Name; Path = $_.FullName }
        } | Export-Csv -Path $csvPath -Append -NoTypeInformation -Encoding UTF8
    
        $logBox.AppendText("CSV exported to: $csvPath`r`n")
    
    })
    
    
    $form.Topmost = $true
    $form.Add_Shown({ $form.Activate() })
    [void]$form.ShowDialog()
powershell

1 个回答

  1. Best Answer

    您的问题是变量作用域之一：

    您使用$fixedPath和$global:fixedPath来指代您认为是同一个变量，但它们并不是：

    • PowerShell 脚本默认在调用者的子范围内运行，这意味着脚本的范围（可以有自己的子范围，特别是在函数内部）与全局范围（）不同；$global:您可以使用$script:范围说明符来引用脚本的顶级范围（甚至可以从嵌入函数中引用）。

    • 虽然您可以通过仅按名称引用来读取$fixedPath祖先作用域中定义的变量（例如），但是当您在没有作用域说明符的情况下为它们分配值时，您会在当前作用域中隐式地使用该名称创建一个新变量，然后该新变量会遮蔽（遮蔽）祖先副本 - 除非您通过作用域说明符明确引用它。

      • 具体来说，通过在代码中同时 赋值$global:fixedPath和$fixedPath，如果您稍后尝试仅使用 读取它，后者脚本范围副本会遮蔽全局副本$fixedPath。
        换句话说：$global:fixedPath如果您仅使用 ，则以后对 的更新将不会被看到$fixedPath，这就是您的问题所在。

    为了稳健性和概念清晰性，我建议始终使用范围说明符来引用为跨范围使用而设计的变量；但是，不要使用$global:，因为全局变量总是会话全局的，因此在脚本退出后仍然存在，从而污染全局命名空间。

    相反，使用$script:范围：
    也就是说，$global:fixedPath用$fixedPath$script:fixedPath

    • 0

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