无法捕获 Return 值

Question

以下代码片段未生成我需要的输出。

function replaceBlankSpacewithUnderscore
{             Param([Parameter(Mandatory=$true)]
               [string]$stringToClean)

    $cleanString = $stringToClean

    if($cleanString.Contains(" ")){
        $cleanString.Replace(" ", "_")
    }
    return $cleanString
}

# Prompt user for Company name
$companyName = Read-Host "Enter Company Name"

# Trim the string to make sure no leading or trailing whitespace exists
$companyName = $companyName.Trim()

# Prompt user for Position
$position = Read-Host "Enter Job Position"

# Trim the string to make sure no leading or trailing whitespace exists
$position = $position.Trim()

# Construct our new filename with the company name and position

# Company name to Lower Case
$companyNametoLowerCase = $companyName.ToLower()

# Position name to Lower Case
$positiontoLowerCase = $position.ToLower()

$companyNamewithUnderScores = replaceBlankSpacewithUnderscore -stringToClean $companyNametoLowerCase
$positionwithUnderScores = replaceBlankSpacewithUnderscore -stringToClean $positiontoLowerCase 

# Combine company name and position (lower case) into one string
$companyNameandPosition = [string]::Format("{0}_{1}", $companyNamewithUnderScores, $positionwithUnderScores)

Write-Output $companyNameandPosition

假设输入是Microsoft Corp和Software Eng。

$companyNameandPosition的输出是System.Object[]_System.Object[]

我阅读了这个 SO page and this Microsoft Docs 页面，但我似乎无法让它正常工作。

预期输出为microsoft_corp_software_eng.odt

Answer 1

在您的函数中，有两个对象被送入管道：return 语句中的 $cleanString.Replace(" ", "_") 和 $cleanString。 $cleanstring 未更改顺便说一句。

替换、tolower 和 trim 等操作有很多步骤可以组合在一个语句中。我改变了一些东西：

# Prompt user for Company name
$companyName = Read-Host "Enter Company Name"

# Prompt user for Position
$position = Read-Host "Enter Job Position"

# Combine company name and position (lower case) into one string
$companyNameandPosition = [string]::Format("{0}_{1}", $companyName.Replace(' ','_').ToLower().Trim(), $position.Replace(' ','_').ToLower().Trim())

Write-Output $companyNameandPosition

无法捕获 Return 值

Unable to Capture Return Value

powershell

powershell-3.0