Not finding namespace when running a sample code of YouTube Data API

Question

I am trying to do an application to live broadcast some videos using youtube. The idea is to play some videos in my application, and if I want, live broadcasting them using youtube.

For now, I am just trying to run a simple code sample, to upload a video. The sample is from this web-site: https://developers.google.com/youtube/v3/code_samples/dotnet#upload_a_video

This is the code I have:

Program.cs

static class Program
{
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    [STAThread]
    static void Main()
    {
        VideoStreamTest video = new VideoStreamTest();
    }
}

VideoStreamTest.cs

With the following usings:

using System;
using System.IO;
using System.Reflection;
using System.Threading;
using System.Threading.Tasks;

using Google.Apis.Auth.OAuth2;
using Google.Apis.Services;
using Google.Apis.Upload;
using Google.Apis.Util.Store;
using Google.Apis.YouTube.v3;
using Google.Apis.YouTube.v3.Data;

And my class:

class VideoStreamTest
{
    public VideoStreamTest()
    {
        Console.WriteLine("=================\nTest Broadcast Youtube\n=================");
        init();
    }

    private static void init()
    {
        Console.WriteLine("YouTube Data API: Upload Video");
        Console.WriteLine("==============================");

        try
        {
            new UploadVideo().Run().Wait();
        }
        catch (AggregateException ex)
        {
            foreach (var e in ex.InnerExceptions)
            {
                Console.WriteLine("Error: " + e.Message);
            }
        }

        Console.WriteLine("Press any key to continue...");
        Console.ReadKey();
    }

    private async Task Run()
    {
        UserCredential credential;
        using (var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
        {
            credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
                GoogleClientSecrets.Load(stream).Secrets,
                // This OAuth 2.0 access scope allows an application to upload files to the
                // authenticated user's YouTube channel, but doesn't allow other types of access.
                new[] { YouTubeService.Scope.YoutubeUpload },
                "user",
                CancellationToken.None
            );
        }

        var youtubeService = new YouTubeService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential,
            ApplicationName = Assembly.GetExecutingAssembly().GetName().Name
        });

        var video = new Video();
        video.Snippet = new VideoSnippet();
        video.Snippet.Title = "Default Video Title";
        video.Snippet.Description = "Default Video Description";
        video.Snippet.Tags = new string[] { "tag1", "tag2" };
        video.Snippet.CategoryId = "22"; // See https://developers.google.com/youtube/v3/docs/videoCategories/list
        video.Status = new VideoStatus();
        video.Status.PrivacyStatus = "unlisted"; // or "private" or "public"
        var filePath = @"REPLACE_ME.mp4"; // Replace with path to actual movie file.

        using (var fileStream = new FileStream(filePath, FileMode.Open))
        {
            var videosInsertRequest = youtubeService.Videos.Insert(video, "snippet,status", fileStream, "video/*");
            videosInsertRequest.ProgressChanged += videosInsertRequest_ProgressChanged;
            videosInsertRequest.ResponseReceived += videosInsertRequest_ResponseReceived;

            await videosInsertRequest.UploadAsync();
        }
    }

    void videosInsertRequest_ProgressChanged(Google.Apis.Upload.IUploadProgress progress)
    {
        switch (progress.Status)
        {
            case UploadStatus.Uploading:
                Console.WriteLine("{0} bytes sent.", progress.BytesSent);
                break;

            case UploadStatus.Failed:
                Console.WriteLine("An error prevented the upload from completing.\n{0}", progress.Exception);
                break;
        }
    }

    void videosInsertRequest_ResponseReceived(Video video)
    {
        Console.WriteLine("Video id '{0}' was successfully uploaded.", video.Id);
    }
}

I have installed the following NuGet Packages:

Google.Apis.YouTube.v3

Google.Apis

But when I run my code I have the following error:

VideoStreamTest.cs(31,13,31,24): error CS0246: The type or namespace name 'UploadVideo' could not be found (are you missing a using directive or an assembly reference?)

What am I doing wrong?

Mike Meinz Mike Meinz · Accepted Answer · 2015-11-07T01:19:24

In addition to the "using" statements in the source code file, you have to add references to the API assemblies in the References area of the project.

Not finding namespace when running a sample code of YouTube Data API

2 Answers