'AuthenticationManager' does not contain a constructor that takes 0 arguments

Question

I have the following code to connect to SharePoint using clientID and ClientSecret:

string siteUrl = "https://****l.sharepoint.com/sites/DocumentApprovalProcess/";
string clientId = "***";
string clientSecret = "**";

using (var context = new AuthenticationManager().GetAppOnlyAuthenticatedContext(siteUrl, clientId, clientSecret))

But I am getting this error:

'AuthenticationManager' does not contain a constructor that takes 0 arguments

Answer 1

The method is in OfficeDevPnP.Core. You need to install OfficeDevPnP.Core.

Reference: https://docs.microsoft.com/en-us/dotnet/api/officedevpnp.core.authenticationmanager.getapponlyauthenticatedcontext

https://www.c-sharpcorner.com/article/connect-to-sharepoint-online-site-with-app-only-authentication/