Powershell Import-Csv结果数

时间:2012-06-20 14:53:12

标签: string powershell csv

我想检查.csv数据库的“Code”属性的值。如果“代码”字段的前三个字符等于(-eq)“产品”的前三个字符,则显示结果数(计数)并将输入添加到.csv数据库。

但是,计数未显示为结果为空。

foreach ($row in $InventoryContents) 
{
    #Lets build a String first
    $exportString = $row.User +','+$row.Product+','+$row.Company+','+$row.Model+',';
    #Everything right so far

    #first three characters of Product
    $firstKey = $row.Product.SubString(0,3).ToUpper()
    echo $firstKey;

    #problem here
    $nonSortedContents = Import-Csv $nonSortedCsv | where-Object { ($_.Code.split('-')[0]) -eq $firstKey }
    #but arrapently this works : Import-Csv $nonSortedCsv| where-Object { ($_.Code.split('-')[0]) -eq "MON"}


    $lines = $nonSortedContents.count
    echo $lines
    #null


    #if not enetered
    if ($lines -eq $null)
    {
            $wholeKey = $firstKey +'-'+  ("{0:D5}" -f 0).ToString()
            $exportString = $exportString + $wholeKey
            $exportString -join  "," >> $nonSortedCsv
    }
    else
    {
            $wholeKey = $firstKey +'-'+  ("{0:D5}" -f $lines).ToString()
            $exportString = $exportString + $wholeKey
            $exportString -join  "," >> $nonSortedCsv
    }
}

我让它与

一起工作
  

$ nonSortedContents =   @(Import-Csv $ nonSortedCsv | where-Object {($ _.Code.split(' - ')[0])-eq $ firstKey})

显然,当CSV文件中只有一行时,Import-Csv返回一个 PSCustomObject。当有多行时,返回的对象是 对象[]。

1 个答案:

答案 0 :(得分:0)

我在条件填充的数组中遇到了类似的问题:

$csv = if ($someCondition) {
  @(Import-CSV someFile.csv)
} else {
  @(Import-CSV someFile.csv | Where-Object { $_.someColumn -eq "someValue" })
}

然而,仅使用数组符号Import-CSV围绕@(...)行是不够的。在我的例子中,我还必须将变量显式声明为数组([array] $csv)。例如:

[array] $csv = if ($someCondition) {
  @(Import-CSV someFile.csv)
} else {
  @(Import-CSV someFile.csv | Where-Object { $_.someColumn -eq "someValue" })
}

我从这里得到提示:http://poshoholic.com/2009/07/03/powershell-quick-tip-when-you-store-an-array-make-sure-it-is-an-array/和此处:https://groups.google.com/forum/#!msg/microsoft.public.windows.powershell/L5J3WffAu9A/vK1mKj2nVncJ