使用 powershell 过滤并通过共享点列表项目

发布于 2024-10-17 05:22:26 字数 480 浏览 2 评论 0原文

我在下面尝试过但没有得到任何结果不确定我是否做得很好。我可以在 foreach 或 if 语句中进行过滤吗提前致谢

[DateTime] $CreatedDate = $item["Created"] 
$convertedCreatedDate = $CreatedDate.ToString("yyyy-MM-dd")
$today = (Get-Date).AddDays(-1).ToString("yyyy-MM-dd")

foreach ($item in $list.items | where {$convertedCreatedDate -eq $today}) {

    if ($list.items | where {$convertedCreatedDate -eq $today}) 
    {
        Write-Host $item["Created"] 
    }

    Write-Host $item["Created"] 
}

原文

I have tried below but not getting any result back
Not sure if i'm doing this well.
Can i filter in the foreach or in my if statement
Thanks in advance

[DateTime] $CreatedDate = $item["Created"] 
$convertedCreatedDate = $CreatedDate.ToString("yyyy-MM-dd")
$today = (Get-Date).AddDays(-1).ToString("yyyy-MM-dd")

foreach ($item in $list.items | where {$convertedCreatedDate -eq $today}) {

    if ($list.items | where {$convertedCreatedDate -eq $today}) 
    {
        Write-Host $item["Created"] 
    }

    Write-Host $item["Created"] 
}

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臻嫒无言 2024-10-24 05:22:26

您可以像上面那样在 foreach 中使用复杂的表达式。我会将其包装在 @() 中，以使代码更具可读性并确保结果是一个数组（长度为 0、1 或 n），例如：

foreach ($item in @($list.items | where {$convertedCreatedDate -eq $today})) {

您还可以简化您的操作使用 DateTime 上的 Date 属性进行日期测试，例如：

$convertedCreatedDate = ([DateTime]$item["Created"]).Date
$today = (Get-Date).Date

您还可以在 if 语句条件中放置复杂的表达式，但 PowerShell 只会评估该语句是否为 $true 或 $false。 PowerShell 执行大量强制操作来尝试执行以下操作：

$list.items | where {$convertedCreatedDate -eq $today}

并将其转换为布尔值。本质上，如果管道计算结果为非空结果，则结果为 $true，否则为 $false。这可能不是您想要的。

You can use a complex expression in your foreach as you're doing above. I would wrap it in a @() to make the code a bit more readable and to ensure the result is an array (either length 0, 1 or n) e.g.:

foreach ($item in @($list.items | where {$convertedCreatedDate -eq $today})) {

You can also simplify you're date testing by using the Date property on a DateTime e.g.:

$convertedCreatedDate = ([DateTime]$item["Created"]).Date
$today = (Get-Date).Date

You can also put a complex expression within an if statement condition but PowerShell will only evaluate whether the statement is $true or $false. PowerShell does lots of coercion to try to take something like:

$list.items | where {$convertedCreatedDate -eq $today}

And convert that to a boolean. Essentially if the pipeline evaluates to a non-empty result, the result is $true otherwise it is $false. This is probably not what you intended.

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忱杏 2024-10-24 05:22:26

试试这个：

$today=(Get-Date).AddDays(-1).ToString("yyyy-MM-dd")

foreach ($item in $list.items) {
    [DateTime]$CreatedDate=$item["Created"]
    $convertedCreatedDate=$CreatedDate.ToString("yyyy-MM-dd")
    if ($convertedCreatedDate -eq $today) {
        Write-Host $item["Created"] 
    }
}

Try this:

$today=(Get-Date).AddDays(-1).ToString("yyyy-MM-dd")

foreach ($item in $list.items) {
    [DateTime]$CreatedDate=$item["Created"]
    $convertedCreatedDate=$CreatedDate.ToString("yyyy-MM-dd")
    if ($convertedCreatedDate -eq $today) {
        Write-Host $item["Created"] 
    }
}

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