PnP core component contains the extension methods which help to achieve the SharePoint task in simple lines of code. So to know more about PnP Core component, have a look at “Introduction to PnP Core Component”.

WebExtensions.ReIndexWeb (PnP Core Component) – This extension method Queues a web for a full crawl during the next incremental crawl.

Supports: SharePoint 2013, SharePoint 2016, SharePoint Online

Assembly: OfficeDevPnP.Core.dll
Namespace: Microsoft.SharePoint.Client


void ReIndexWeb()

Single Line Code: Web.ReIndexWeb()

Code Snippet:

The following example re-index the current SharePoint website using trimmed version of managed CSOM (PnP Core Component)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.SharePoint.Client;
using OfficeDevPnP.Core;

namespace PnPSitesCore.Samples
 class Program
 static void Main(string[] args)
 string siteUrl = "";

 AuthenticationManager authManager = new AuthenticationManager();

 //Interactive Login to SharePoint site - Opens a Online signin page to authenticate the user
 var context = authManager.GetWebLoginClientContext(siteUrl);
 //Queues the current site for the full crawl during the next incremental crawl

 Console.WriteLine("Press any key to exit.");

The above code also available from GitHub.