Please refer to the Introduction to PnP Core Component and OfficeDevPnP.Core for more details. I have created a console application and added SharePointPnPCoreOnline NuGet package for the SharePoint 2016 version.
Code Snippet
  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text;
  5. using System.Threading.Tasks;
  6. using Microsoft.SharePoint.Client;
  7. using OfficeDevPnP.Core;
  9. namespace SP2016PnPCoreComponentDemo
  10. {
  11. class Program
  12. {
  13. static void Main(string[] args)
  14. {
  15. // Input Parameters
  16. string siteUrl = "http://c7395723754/";
  17. string userName = "administrator";
  18. string password = "xxxxxxxxx";
  19. string domain = "AD2012";
  21. OfficeDevPnP.Core.AuthenticationManager authMgr = new OfficeDevPnP.Core.AuthenticationManager();
  23. try
  24. {
  25. // Get the client context
  26. using (var ctx = authMgr.GetNetworkCredentialAuthenticatedContext(siteUrl, userName, password, domain))
  27. {
  28. // Get Site Close Date
  29. DateTime dtSiteCloseDate = ctx.Web.GetSiteCloseDate();
  30. Console.WriteLine(dtSiteCloseDate);
  31. Console.ReadLine();
  32. }
  33. }
  35. catch (Exception ex)
  36. {
  37. Console.WriteLine("Error Message: " + ex.Message);
  38. }
  40. }
  41. }
  42. }