PowerShell script module file to remove all bin and obj folders under the current folder and any subfolders. Handy for Visual Studio projects and solutions.

k0x.Remove-BinObjFolders.psm1

# Remove all bin and obj folders under the current folder and any subfolders.
#
# This is handy for cleaning up bin and obj folders in Visual Studio projects and solutions.
function Remove-BinObjFolders {

    param(
        [switch]$Verbose,
        [switch]$WhatIf
    )

    $currentFolderPath = Get-Location

    if ($Verbose) {
        Write-Host "Removing any bin and obj folders under: $currentFolderPath"
    }

    $pathList = Get-ChildItem $currentFolderPath -include bin,obj -Recurse

    if ($Verbose) {
        Write-Host "Found $($pathList.Length) paths to remove."
    }

    foreach ($path in $pathList) {
        if ($Verbose) {
            Write-Host "Removing: $path"
        }
        if (-not $WhatIf) {
            Remove-Item $path -Force -Recurse
        }
    }
}

Export-ModuleMember -Function Remove-BinObjFolders

Test-Remove-BinObjFolders.ps1

# Test of Remove-BinObjFolders function.

$ErrorActionPreference = "Stop"

Write-Host
Write-Host "----------------------"

# Arrange

Write-Host
Write-Host "Arrange"

$testPaths =@(
    "./Test1/bin",
    "./Test1/obj",
    "./Test2/Test2a/bin",
    "./Test2/Test2a/obj",
    "./Test3/Test3a/Test3ab/bin",
    "./Test3/Test3b/Test2bc/obj"
)
foreach ($path in $testPaths)
{
    Write-Host $path
    if (-not (Test-Path $path)) {
        Write-Host "Creating test path: $path"
        New-Item $path -ItemType Directory | out-null
    }
}

# Act

Write-Host
Write-Host "Act"

Remove-BinObjFolders -Verbose # -WhatIf

# Assert

Write-Host
Write-Host "Assert"

$errorCount = 0
foreach ($path in $testPaths)
{
    if (Test-Path $path) {
        Write-Host "Error! path not removed:  $path" -ForegroundColor "Red"
        $errorCount = $errorCount + 1
    }  
}
if ($errorCount -eq 0) {
    Write-Host "Passed! All paths removed!" -ForegroundColor "Green"
}

# Done

Write-Host
Write-Host "Done."
Write-Host