I've been stuck at this for days now. I copied the exact codes from google api samples to upload files to Google Drive. Here is the code

UserCredential credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
           new ClientSecrets
           {
               ClientId = ClientId,
               ClientSecret = ClientSecret,
           },
           new[] { DriveService.Scope.Drive,
            DriveService.Scope.DriveFile },
              "user",
              CancellationToken.None,
              new FileDataStore("MyStore")).Result;

But it would throw an exception at runtime: Method not found: 'Void Google.Apis.Util.Store.FileDataStore..ctor(System.String)'. I already added the necessary Google Api dlls.

Or if anyone could suggest a better code for uploading files to Google Drive in a website which implements Server-Side Authorization. Any help would be greatly appreciated.

UPDATE: I changed my code to this

var token = new TokenResponse { RefreshToken = "1/6hnki1x0xOMU4tr5YXNsLgutzbTcRK1M-QOTEuRVxL4" }; 
               var credentials = new UserCredential(new GoogleAuthorizationCodeFlow(new GoogleAuthorizationCodeFlow.Initializer
                {
                    ClientSecrets = new ClientSecrets
                    {
                        ClientId = ClientId,
                        ClientSecret = ClientSecret
                    },
                    Scopes = new[] { 
                        DriveService.Scope.Drive, DriveService.Scope.DriveFile
                    }
                }), "user", token);

But it also throws an exception: Method not found: 'Void Google.Apis.Auth.OAuth2.Flows.GoogleAuthorizationCodeFlow..ctor(Initializer). Is the problem with the dlls?