Powershell Script to Customize Sharepoint default Left Navigation

We can use the following script to delete/add navigation urls to the sharepoint default left navigation. Following script deletes the existing navigation nodes and add according to the given structure in the xml file.

Powershell script:

[void][System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")

function New-SPNavigation{

[CmdletBinding()]

                Param(   

                [Parameter(Mandatory=$false)]

                [switch]$CreateFromXml      

    )

# Create From Xml

if ($CreateFromXml) {

    #Get XML File

    $xmlFilePath = "C:\Projects\BuildScripts\LeftNavigation.xml"

    $xmlFile = [xml](Get-Content($xmlFilePath))

    Write-Host $xmlFile.Navigation.WebUrl

    #Get Web and Quick Launch objects

    $siteUr = $xmlFile.Navigation.WebUrl

    $site = New-Object Microsoft.SharePoint.SPSite($siteUr)

    $web = $site.OpenWeb()

    $currentLinks = @()

    $qlNav = $web.Navigation.QuickLaunch  

    #Clear Quick Launch links

    $qlNav | ForEach-Object {

        $currentLinks = $currentLinks + $_.Id     

    }  

    $currentLinks | ForEach-Object {

        $currentNode = $web.Navigation.GetNodeById($_)    

        write-host "Deleting" $currentNode.Title "and all child navigation links..."

        $qlLibraries = $currentNode.Children   

        $qlNav.Delete($currentNode)

    }

    #Create Quick Launch Links

    $xmlFile.Navigation.Headings.Heading | ForEach-Object {

        $headingNode = New-Object Microsoft.SharePoint.Navigation.SPNavigationNode($_.Title, $_.Url, $true)

        write-host "Creating Heading:" $_.Title

        $heading = $qlNav.AddAsLast($headingNode)

        $a=$_.NavLink.Count

        if($a -gt 0)

        {

            $_.NavLink | ForEach-Object {

                $linkNode = New-Object Microsoft.SharePoint.Navigation.SPNavigationNode($_.Title, $_.Url, $true)

                write-host "Creating Navigation Link:" $_.Title

                $link = $heading.Children.AddAsLast($linkNode)

            }

        }     

        $web.Update()

    }#End ForEach Hedding 

    $web.Dispose()

    $site.Dispose()

  }

}  

Add-PSSnapin "Microsoft.SharePoint.PowerShell" -EA "SilentlyContinue"

new-spnavigation -createfromxml 

Write-Host "Press any key to continue ..."

$x = $host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown") 

XML File: 

<?xml version="1.0" encoding="utf-8" ?>

  <Navigation>

  <WebUrl>http://<site url></WebUrl> 

    <Headings>

      <Heading Title='My Profile' Url='/test'></Heading>

      <Heading Title='My Place' Url='/test/'>

        <NavLink Title='Home' Url='/test/Pages/Home.aspx'></NavLink>

        <NavLink Title='Google Map' Url='/test/Pages/GoogleMap.aspx'></NavLink>

      </Heading>

      <Heading Title='My Links' Url='/test'>

        <NavLink Title='Yahoo' Url='http://www.yahoo.com'></NavLink>

        <NavLink Title='Facebook' Url='http://www.facebook.com'></NavLink>

         <NavLink Title='Google' Url='http://www.google.com'></NavLink>

      </Heading>  

    </Headings>

  </Navigation>

References:

http://get-spscripts.com/2011/03/managing-quick-launch-navigation-in.html