Powershell，如何通过 pscustomobject 或有序的列获取 csv？

Question

作为 Powershell 的初学者，我有一个无法解决的问题。我使用以下代码将不同 CSV 文件的平均值作为字符串：

# recovery of the list of  csv files present in the folder "folder_1".

$files=(Get-ChildItem -path "C:\folder_1\" -Recurse -Include *.csv)
 
#loop to read each file and average the variables "PRESS_CELL" and "PRESS_DELTA
foreach($file in $files){
    $varTemp = @((Get-Content $file | ConvertFrom-Csv | Measure-Object "PRESS_CELL","PRESS_DELTA" -Average | Export-Csv -Path "C:\folder_1\Alias.csv" -NoTypeInformation -Append))
    Write-Host $varTemp
}

#added an increment to sort the data (averages)
$vartemp2 = Import-CSV "C:\folder_1\Alias.csv" | Select *,LINENUMBER | ForEach-Object -Begin { $Line = 1 } { 
$_.LineNumber = $Line++
$_ 
} | Export-CSV "C:\folder_1\Alias2.csv" -NoTypeInformation

Write-Host $vartemp2

# sort data by "property" and by "LINENUMBER"

$vartemp3 = Import-Csv "C:\folder_1\Alias2.csv" 
$vartemp3 | % { $_.LINENUMBER = [int]$_.LINENUMBER }
$vartemp3 | Sort-Object -Property @{ Expression = 'Property'; Ascending = $true }, @{ Expression = 'LINENUMBER'; Ascending = $true } |
  Format-Table -Property "Average","Property","LINENUMBER" 

# groups the values obtained in a table/customobject and export it to csv by column ?

$fields = [ordered]@{
PRESS_CELL =  $vartemp3 |  ? property -like *PRESS_CELL* | Select -ExpandProperty Average   
PRESS_DELTA = $vartemp3 | ? property -like *PRESS_DELTA* |Select -ExpandProperty Average 
} 
$fields | export-csv C:\1_ICOS_data\Alias4.csv -Append   ##DOESN'T WORK 
[result][1]

但是，我想将结果导出为 CSV 表（每个结果 1 列，标题为 PRESS_CELL 和 PRESS_DELTA。当我使用管道时：

 | export-csv C:\temp\alias.csv -Append

我得到一个结果：

带“有序”

"System.Collections.Specialized.OrderedDictionary+OrderedDictionaryKeyValueCollection","System.Collections.Specialized.OrderedDictionary+OrderedDictionaryKeyValueCollection","False","System.Object","False"

还有 pscustomobject ：

System.Object[],"System.Object[]"

Answer 1

像这样将 -NoTypeInformation 添加到 export-csv 命令中

$fields = [ordered]@{
PRESS_CELL = $vartemp3 | ? property -like *PRESS_CELL* | Select -ExpandProperty Average  
PRESS_DELTA = $vartemp3 | ? property -like *PRESS_DELTA* |Select -ExpandProperty Average 
}
#Or:
$fields = [pscustomobject]@{
PRESS_CELL = $vartemp3 | ? property -like *PRESS_CELL* | Select -ExpandProperty Average 
PRESS_DELTA = $vartemp3 | ? property -like *PRESS_DELTA* |Select -ExpandProperty Average }

$fields |export-csv "c:\fields.csv" -Append -NoTypeInformation