Getwebtemplates.ps1

#Credentials to connect to office 365 site collection url 
$url ="https://velegandla.sharepoint.com/sites/training"
$username="[email protected]"
$password="yourpassword"
$Password = $password |ConvertTo-SecureString -AsPlainText -force

Write-Host "Load CSOM libraries" -foregroundcolor black -backgroundcolor yellow
Set-Location $PSScriptRoot
Add-Type -Path (Resolve-Path "Microsoft.SharePoint.Client.dll")
Add-Type -Path (Resolve-Path "Microsoft.SharePoint.Client.Runtime.dll")
Write-Host "CSOM libraries loaded successfully" -foregroundcolor black -backgroundcolor Green 

Write-Host "authenticate to SharePoint Online Tenant site $url and get ClientContext object" -foregroundcolor black -backgroundcolor yellow  
$Context = New-Object Microsoft.SharePoint.Client.ClientContext($url) 
$credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($username, $password) 
$Context.Credentials = $credentials 
$context.RequestTimeOut = 5000 * 60 * 10;
$web = $context.Web
$site = $context.Site 
$context.Load($web)
$context.Load($site)
try
{
  $context.ExecuteQuery()
  Write-Host "authenticateed to SharePoint Online site collection $url and get ClientContext object succeefully" -foregroundcolor black -backgroundcolor Green
}
catch
{
  Write-Host "Not able to authenticateed to SharePoint Online site collection $url $_.Exception.Message" -foregroundcolor black -backgroundcolor Red
  return
}

#Get list of webtemplates available
Write-Host "Getting list of webtemplates" -foregroundcolor black -backgroundcolor yellow  
$webtemplates = $site.GetWebTemplates(1033,0)
$context.Load($webtemplates)
try
{
$context.ExecuteQuery()
Write-Host "succeefully retrived all the list of webtemplates available" -foregroundcolor black -backgroundcolor Green  
#List all the webtemplates
Write-Host "Listing available webtemplates" -foregroundcolor black -backgroundcolor Green
$webtemplates
}
catch
{
Write-Host "Error while retriving ist of webtemplates available" $_.Exception.Message -foregroundcolor black -backgroundcolor Red  
}