Google Developer API V3 for video upload in YouTube C#.net

Question

I have been using google's reputed API V2 for uploading the videos on YouTube from my web application as there has been up gradation in API to V3 , I am unable to upload the same through the same code.

I have tried with the new application for uploading the video on YouTube with V3, but there are many things which were there before but not available in V3

OLD: From: Google.Gdata.YouTube.Youtubeservice

YouTubeService service = new YouTubeService(applicationName,developerKey);
service.setUserCredentials(googleEmail, googleEmailPassword);

NEW: From : Google.Apis.Youtube.V3.YoutubeService

YouTubeService service = new YouTubeService();` -- its doesn't have the set credentials

I have gone through YouTube Data API .NET Code Samples, but it was not much useful as it’s an console application.

Answer 1

You cant use Login and password anymore. You need to use Oauth2 to authenticate a user. The code is the same if it is a web or a console application.

/// <summary>
/// Authenticate to Google Using Oauth2
/// Documentation https://developers.google.com/accounts/docs/OAuth2
/// </summary>
/// <param name="clientId">From Google Developer console https://console.developers.google.com</param>
/// <param name="clientSecret">From Google Developer console https://console.developers.google.com</param>
/// <param name="userName">A string used to identify a user.</param>
/// <returns></returns>
public static YouTubeService AuthenticateOauth(string clientId, string clientSecret, string userName)
        {

            string[] scopes = new string[] { YouTubeService.Scope.Youtube,  // view and manage your YouTube account
                                             YouTubeService.Scope.YoutubeForceSsl,
                                             YouTubeService.Scope.Youtubepartner,
                                             YouTubeService.Scope.YoutubepartnerChannelAudit,
                                             YouTubeService.Scope.YoutubeReadonly,
                                             YouTubeService.Scope.YoutubeUpload}; 

            try
            {
                // here is where we Request the user to give us access, or use the Refresh Token that was previously stored in %AppData%
                UserCredential credential = GoogleWebAuthorizationBroker.AuthorizeAsync(new ClientSecrets { ClientId = clientId, ClientSecret = clientSecret }
                                                                                             , scopes
                                                                                             , userName
                                                                                             , CancellationToken.None
                                                                                             , new FileDataStore("Daimto.YouTube.Auth.Store")).Result;

                YouTubeService service = new YouTubeService(new YouTubeService.Initializer()
                {
                    HttpClientInitializer = credential,
                    ApplicationName = "YouTube Data API Sample",
                });
                return service;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.InnerException);
                return null;

            }

        }    }

Usage:

 // Authenticate Oauth2
    String CLIENT_ID = "xxxxx-d0vpdthl4ms0soutcrpe036ckqn7rfpn.apps.googleusercontent.com";
    String CLIENT_SECRET = "NDmluNfTgUk6wgmy7cFo64RV";
    var service = Authentication.AuthenticateOauth(CLIENT_ID, CLIENT_SECRET, "test");

code ripped from the Google-dotnet-Samples/ youtube