Powershell script to delete content type in all site collections

Hi,

We had a requirement of deleting one of the content type in all the site collections under a Web Application.

Below is the script where inputs have been provided in csv file

//DeleteContentType.bat

 cd /d %~dp0

@echo off

powershell.exe -noexit .\PSDeleteContentType.ps1 .\DeleteContentType.csv

//DeleteContentType.csv

WebAppUrl, ContentType

https://webappurl/, content type name

//PSDeleteContentType.ps1

#///<summary>

#/* Script Name                      : PSDeleteContentType

# * Purpose                             : Used to delete the content type from the web application

#///</summary>

#-----Input parameters to the script

param($inputFile)

#------To check if Sharepoint cmdlets are registered are registered

if ((Get-PSSnapin -Name Microsoft.SharePoint.Powershell -ErrorAction SilentlyContinue) -eq $null ) 

{ 

            Add-PSSnapin Microsoft.SharePoint.Powershell  

} 

#---------------------------------------------------------------------------------------------------

#-----------------------------------------Start Logging---------------------------------------------

$filepath = $MyInvocation.MyCommand.Definition                                        

$directorypath = [System.IO.Path]::GetDirectoryName($filepath)

$LogTime = Get-Date -Format yyyy-MM-dd_h-mm

$LogFile = $directorypath + "\DeleteContentType_Log_$LogTime.txt"

Start-Transcript -Path $LogFile -Force

#---------------------------------------------------------------------------------------------------

#---------------------------------------------------------------------------------------------------

# Function to delete the content type

function DeleteContentType($webAppUrl, $contentType)

{

            $wa = Get-SPWebApplication $webAppUrl

            if($wa -ne $null)

            {

                        $allSites = $wa | Get-SPSite -Limit all

                        foreach($spsite in $allSites)

                        {

                                    $allWebs = $spsite.allwebs

                                    foreach ($spweb in $allWebs) 

                                    { 

                                                try

                                                {

                                                            Write-Host 'Checking '

                                                            write-host $spweb.url

                                                            Write-Host '...'

                                                            $ct = $spweb.ContentTypes[$contentType]

                                                            if ($ct) 

                                                            {

                                                                        $ctusage = [Microsoft.SharePoint.SPContentTypeUsage]::GetUsages($ct)

                                                                        foreach ($ctuse in $ctusage) 

                                                                        {

                                                                                    $list = $spweb.GetList($ctuse.Url)

                                                                                    $contentTypeCollection = $list.ContentTypes;

                                                                                    $contentTypeCollection.Delete($contentTypeCollection[$contentType].Id);

                                                                                    Write-host "Deleted $contentType content type from $ctuse.Url..."

                                                                        }

                                                                        $ct.Delete()

                                                                        Write-host "Deleted $contentType from site..."

                                                            } 

                                                            else 

                                                            { 

                                                                        Write-host "$contentType not found..." 

                                                            }

                                                            $spweb.Dispose()                                           

                                                }

                                                catch 

                                                {

                                                            write-host $_

                                                }

                                    }

                       

                                    $spsite.Dispose()

                        }

            }

            else

            {

                        Write-Host 'Not a valid Web application url...'

            }

}

#---------------------------------------------------------------------------------------------------

#-----------------------------------------------------------------------------------

#loop through a csv file

Import-Csv $inputFile | ForEach{                              

    $webAppUrl = $_.WebAppUrl

            $contentType = $_.ContentType

                

    try

    {

                        write-host "Delete the Content Type $contentType from $webAppUrl..."

        DeleteContentType $webAppUrl $contentType

                        write-host "Completed..."

    }

    catch

    {

                        write-host "Completed with errors..."                                    

        Write-Output $_ 

    }

}

#---------------------------------------------------------------------------------------------------

#-----------------------------------------End Logging-----------------------------------------------

Stop-Transcript

#---------------------------------------------------------------------------------------------------