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.Net;
  5. using System.Text;
  6. using System.Threading.Tasks;
  7. using Microsoft.SharePoint.Client;
  8. using OfficeDevPnP.Core;
  10. namespace SP2016PnPCoreComponentDemo
  11. {
  12. class Program
  13. {
  14. static void Main(string[] args)
  15. {
  16. // Input Parameters
  17. string siteUrl = "http://c7395723754:35298/sites/VijaiDemo";
  18. string userName = "administrator";
  19. string password = "Xy625xjCe5";
  20. string domain = "AD2012";
  21. string listTitle = "PnP Custom List";
  22. string contentTypeId = "0x0100FC6F80F7923849FBBF73F0974A2DEB9E";
  23. string contentTypeName = "PnP Content Type";
  25. OfficeDevPnP.Core.AuthenticationManager authMgr = new OfficeDevPnP.Core.AuthenticationManager();
  27. try
  28. {
  29. // Get the client context
  30. using (var ctx = authMgr.GetNetworkCredentialAuthenticatedContext(siteUrl, userName, password, domain))
  31. {
  32. // Check if content type exists by Name/Id in the list using CSOM Extension Method
  33. List list = ctx.Web.GetListByTitle(listTitle);
  34. if (list.ContentTypeExistsByName(contentTypeName) || list.ContentTypeExistsById(contentTypeId))
  35. {
  36. Console.WriteLine("Content Type Exists");
  37. Console.ReadLine();
  38. }
  39. }
  40. }
  42. catch (Exception ex)
  43. {
  44. Console.WriteLine("Error Message: " + ex.Message);
  45. }
  46. }
  47. }
  48. }