BaseClientService does not contain a definition of Files

Question

I have problem using the DriveService from google Nuget package (Google.Apis.Drive.v3).

I get this error:

Severity Code Description Project File Line Suppression State Error CS1061 'BaseClientService' does not contain a definition for 'Files' and no extension method 'Files' accepting a first argument of type 'BaseClientService' could be found (are you missing a using directive or an assembly reference?) Sampleproject.Web C:\sample\Sampleproject.Web\Controllers\DriveController.cs 117 Active

I'm using parts of the guide from the official documentation: https://developers.google.com/drive/v3/web/quickstart/dotnet#step_1_turn_on_the_api_name

Initially i thought it was just a "usings" that i was missing, but i can't seem to figure out/google my way to which it is.

Edit:

My service looks like this:

And my usercredentials looks like this:

Answer 1

I am not sure how you created your service but you can try:

I am going to guess you are doing something like this.

// Create Drive API service.
var service  = new BaseClientService.Initializer()
    {
    HttpClientInitializer = credential,
    ApplicationName = "Drive Authentication Sample",
    };

In which case you should be declaring the service like this.

// Create Drive API service.
var service  = new DriveService(new BaseClientService.Initializer()
    {
     HttpClientInitializer = credential,
     ApplicationName = "Drive Authentication Sample",
     });

Update:

Part of your problem could be that you are mixing V2 and V3.

using Google.Apis.Drive.v3;

List:

var pageStreamer = new PageStreamer<Google.Apis.Drive.v3.Data.File, FilesResource.ListRequest, Google.Apis.Drive.v3.Data.FileList, string>(
                                                   (request, token) => request.PageToken = token,
                                                   response => response.NextPageToken,
                                                   response => response.Files);

var req = service.Files.List();
req.PageSize = 1000;


foreach (var result in pageStreamer.Fetch(req))
     {
     Console.WriteLine(result.Id);
     }