How to Update/Modify Quick Launch to a Web Site in SharePoint Office 365 Programmatically using CSOM C#

In the previous article, we saw how to Add a Quick Launch Link. In this article, we will be seeing how to Update Quick Launch to a Web in SharePoint Office 365 Programmatically using CSOM C#

 namespace Console.Office365
 {
     using Microsoft.SharePoint.Client;
     using Microsoft.SharePoint.Client.Taxonomy;
     using Newtonsoft.Json.Linq;
     using System;
     using System.Collections.Generic;
     using System.IO;
     using System.Linq;
     using System.Threading.Tasks;
 
     class Program
     {
         static void Main(string[] args)
         {
             UpdateQuickLaunch();
         }
 
         public static void UpdateQuickLaunch()
         {
             OfficeDevPnP.Core.AuthenticationManager authMgr = new OfficeDevPnP.Core.AuthenticationManager();
 
             string siteUrl = "https://*****.sharepoint.com/sites/communitysite/";
             string userName = "Sathish@*******.onmicrosoft.com";
             string password = "*******";
 
             using (var ctx = authMgr.GetSharePointOnlineAuthenticatedContextTenant(siteUrl, userName, password))
             {
                 Web web = ctx.Web;
                 ctx.Load(web);
 
                 NavigationNodeCollection quickLaunchCollection = web.Navigation.QuickLaunch;
                 ctx.Load(quickLaunchCollection);
                 ctx.ExecuteQueryRetry();
 
                 NavigationNode NavigationNode = quickLaunchCollection.Where(n => n.Title == "Heading4").FirstOrDefault();
 
                 NavigationNode.Url = "https://www.sharepointpals.com";
 
                 NavigationNode.Update();
 
                 ctx.ExecuteQueryRetry();
             }
         }
     }
 }
 

Happy Coding,

Sathish Nadarajan.