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Download All Files From Library in SharePoint online

 #Load SharePoint CSOM Assemblies

Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.dll"

Add-Type -Path "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\ISAPI\Microsoft.SharePoint.Client.Runtime.dll"

 

Function Download-AllFilesFromLibrary()

{

    param

    (

        [Parameter(Mandatory=$true)] [string] $SiteURL,

        [Parameter(Mandatory=$true)] [Microsoft.SharePoint.Client.Folder] $SourceFolder,

        [Parameter(Mandatory=$true)] [string] $TargetFolder

    )

    Try {

         

        #Create Local Folder, if it doesn't exist

        $FolderName = ($SourceFolder.ServerRelativeURL) -replace "/","\"

        $LocalFolder = $TargetFolder + $FolderName

        If (!(Test-Path -Path $LocalFolder)) {

                New-Item -ItemType Directory -Path $LocalFolder | Out-Null

        }

         

        #Get all Files from the folder

        $FilesColl = $SourceFolder.Files

        $Ctx.Load($FilesColl)

        $Ctx.ExecuteQuery()

 

        #Iterate through each file and download

        Foreach($File in $FilesColl)

        {

            $TargetFile = $LocalFolder+"\"+$File.Name

            #Download the file

            $FileInfo = [Microsoft.SharePoint.Client.File]::OpenBinaryDirect($Ctx,$File.ServerRelativeURL)

            $WriteStream = [System.IO.File]::Open($TargetFile,[System.IO.FileMode]::Create)

            $FileInfo.Stream.CopyTo($WriteStream)

            $WriteStream.Close()

            write-host -f Green "Downloaded File:"$TargetFile

        }

         

        #Process Sub Folders

        $SubFolders = $SourceFolder.Folders

        $Ctx.Load($SubFolders)

        $Ctx.ExecuteQuery()

        Foreach($Folder in $SubFolders)

        {

            If($Folder.Name -ne "Forms")

            {

                #Call the function recursively

                Download-AllFilesFromLibrary -SiteURL $SiteURL -SourceFolder $Folder -TargetFolder $TargetFolder

            }

        }

  }

    Catch {

        write-host -f Red "Error Downloading Files from Library!" $_.Exception.Message

    }

}

 

#Set parameter values

$SiteURL="<SITEURL>"

$LibraryName="Style Library"

$TargetFolder="D:\0\"

 

#Setup Credentials to connect

$Cred= Get-Credential

$Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.Username, $Cred.Password)

 

#Setup the context

$Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($SiteURL)

$Ctx.Credentials = $Credentials

      

#Get the Library

$List = $Ctx.Web.Lists.GetByTitle($LibraryName)

$Ctx.Load($List)

$Ctx.Load($List.RootFolder)

$Ctx.ExecuteQuery()

 

#Call the function: sharepoint online download multiple files powershell

Download-AllFilesFromLibrary -SiteURL $SiteURL -SourceFolder $List.RootFolder -TargetFolder $TargetFolder


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