Restaurer des milliers d'éléments supprimés par une personne sur un site Sharepoint peut être une opération fastidieuse, voici donc un script Powershell pour le faire à votre place et vous bénéficierez aussi d'un rapport d'état ("Success", "Failure") pour chacun des éléments.

1 - Prérequis Powershell

Dans un premier temps nous allons avoir besoin d’installer le module Powershell nécessaire à la gestion de Sharepoint, pour ce faire utilisez la commande suivante :

# Installation du Module Powershell
Install-Module SharePointPnPPowerShellOnline

Une fois le module Powershell installé nous allons pouvoir nous connecter au site et atteindre sa corbeille de là nous pourrons faire le filtrage et l’export des éléments.

2 - Script Powershell

# Script to Restore RecycleBin elements
# By : Mathieu ADELAÏDE
# Date : 06/09/2019
# Version : V0

#######################
# Step 0 : Management #
#######################
#region - Step 0
# Folder Definition
# Get Current Path
$currentPath = (Get-Location).Path


$RootFolder = "C:\Temp\Sharepoint"
$LogFolder = "$RootFolder\Log"

#Folder Creation
$AllFolder = $RootFolder, $LogFolder
$AllFolder | foreach {
    $FolderName = $_
    If (!(Test-Path $FolderName)) {
        New-Item $FolderName -ItemType Directory
        }
    }

# Files Definition
$ResultState = "$LogFolder\RestaurationReport.csv"
Add-Content $ResultState -Value "Title;ItemType;Size;ItemState;DirName;DeletedByName;DeletedDate;ID;State"
$logFilePath = "$logFolder\SP_Restauration.log"

#Define Array
$Array = @()

#Config Variables
$SiteURL = "https://MySite.sharepoint.com/sites/Recrutement"
#endregion - Step 0

#######################
# Step 1 : Connection #
#######################
#region - Step 1
#Connect to Sharepoint Online
Try {
    Connect-PnPOnline -Url $SiteURL -Credentials (Get-Credential)
    }
Catch {
    $tmpError = $_.Exception.message
	Write-Output "The following error occurred: $tmpError" | Add-Content $logFilePath
	Write-Output "The error occurred while we trying to Connect to Sharepoint Online" | Add-Content $logFilePath
    }
#endregion - Step 1

#######################################
# Step 2 : Collection and Restoration #
#######################################
#region - Step 2
# List all Items
$RecycleBin = Get-PnPRecycleBinItem

# Filter result
$FilteredRecycleBin = $RecycleBin.Where({$_.DeletedByName -eq "DUPONT Jean"})
$FilteredRecycleBin | foreach {
    $Title = $_.Title
    $ItemType = $_.ItemType
    $Size = $_.Size
    $ItemState = $_.ItemState
    $DirName = $_.DirName
    $DeletedByName = $_.DeletedByName
    $DeletedDate = $_.DeletedDate
    $ID = $_.id
    $Guid = $ID.Guid
    
    # Restore
    Try {
        Restore-PnPRecycleBinItem -Identity $Guid -Force -ErrorAction Stop
        Write-Output "Successfully Restored File $Title" | Add-Content $logFilePath
        $State = "Succes"
        }
    Catch {
        $tmpError = $_.Exception.message
	    Write-Output "The following error occurred: $tmpError" | Add-Content $logFilePath
	    Write-Output "The error occurred while we trying to Restore $Title" | Add-Content $logFilePath
        $State = "Failed"
        }
    $Array += New-Object psobject -Property @{
        Title = $Title
        ItemType = $ItemType
        Size = $Size
        ItemState = $ItemState
        DirName = $DirName
        DeletedByName = $DeletedByName
        DeletedDate = $DeletedDate
        State = $State
        Id = $id
        }

    # Release variable
    $Title = $null
    $ItemType = $null
    $Size = $null
    $ItemState = $null
    $DirName = $null
    $DeletedByName = $null
    $DeletedDate = $null
    $ID = $null
    $State = $null
    $Guid = $null
    }
#endregion - Step 2

###################
# Step 3 : Export #
###################
#region - Step 3
Try {
    $Array | Export-Csv $ResultState -Encoding UTF8 -NoTypeInformation -Delimiter ";"
    Write-Output "Successfully Export Data" | Add-Content $logFilePath
    }
Catch {
    $tmpError = $_.Exception.message
	Write-Output "The following error occurred: $tmpError" | Add-Content $logFilePath
	Write-Output "The error occurred while we trying to Export Data" | Add-Content $logFilePath
    }
#endregion - Step 3