PowerShell循环逻辑错误 无法配对同名pptx/png文件发送邮件

原脚本的嵌套循环逻辑存在两个核心问题，导致匹配结果不符合预期：

• 内层遍历png文件夹的循环中，每次迭代都会覆盖$Screenshot变量，整个内层循环执行结束后，$Screenshot只会保留png文件夹里最后一个被遍历到的文件，也就是你遇到的永远匹配C.png的问题
• 内层循环完全没有做文件名匹配判断，没有把当前pptx的文件名和png文件名做关联，只是无意义遍历完了所有png文件。

不需要做双层循环，拿到pptx的无后缀文件名后，直接拼接对应同名png的路径即可，同时修复原脚本的语法问题、增加异常校验：

# 提前配置通用发件参数，根据实际情况修改
$year = Get-Date -Format "yyyy"
$smtpsettings = @{
    From       = "发件人邮箱@example.com"
    To         = "收件人邮箱@example.com"
    SmtpServer = "SMTP服务器地址"
    Port       = 587
    UseSsl     = $true
    Credential = Get-Credential
}

Get-ChildItem "C:\APPS\Deployments" -Filter *.pptx | 
Foreach-Object {
    $pptFile = $_.FullName
    $DeploymentName = [System.IO.Path]::GetFileNameWithoutExtension($pptFile)
    # 直接拼接同名png的完整路径
    $pngPath = Join-Path -Path "C:\APPS\Screenshots" -ChildPath "$DeploymentName.png"

    # 校验对应png是否存在，不存在则跳过
    if (-not (Test-Path -Path $pngPath -PathType Leaf)) {
        Write-Warning "部署项 $DeploymentName 未找到同名截图文件 $pngPath，跳过发件"
        return
    }

    try {
        Send-MailMessage @smtpsettings `
            -Attachments $pptFile, $pngPath `
            -Subject "FOR REVIEW & APPROVAL: GC.019.1: Separation of environments $DeploymentName - $year" `
            -Priority High `
            -Body  "<font face='Californian FB'> Hello ABC,  <br /> <br /> This email is in regards to executing Annual control  Separation of environments (Development, Acceptance and Production) for the $year for the deployment $DeploymentName<br /> <br /> Please find attached the landscape document and the screenshots as captured from the actual deployments.<br />  <br /> Evidences for review:<br />  <br />
1.  Latest landscape document<br />  <br />
2.  Screenshots from different environments as specified in the landscape document<br />  <br />
<font face='Times New Roman' color='blue'> =====================================
<br /> <br /> Thanks & Regards, <br /> Siddhartha Das<br />" `
            -BodyAsHtml -Encoding utf8 -Verbose -ErrorAction Stop
        Write-Host "部署项 $DeploymentName 对应邮件发送成功"
    }
    catch {
        Write-Warning "部署项 $DeploymentName 邮件发送失败：$($_.Exception.Message)"
    }
}

• 移除了无意义的内层png遍历逻辑，通过文件名直接拼接目标png路径，执行效率更高，匹配逻辑完全准确
• 新增png文件存在性校验，避免因为缺失对应截图导致发件报错中断整个流程
• 修复了原脚本中HTML Body字符串未闭合的语法错误，将原utf32编码调整为兼容性更好的utf8
• 增加执行过程提示，方便快速定位发送失败的项

内容的提问来源于stack exchange，提问作者Siddhartha Das