We Keep Coding

How to convert code YouTube API from Console to WPF [closed]

Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 1 year ago.
Improve this question
I have code worked fine in Console but i tried convert it to WPF c# but i didn't success.
I tried porting each part to WPF and I found out the code below (2nd code I quoted below) when I convert it to WPF it doesn't work
Please help me. How to it work fine in WPF c#
This is my code:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
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;
namespace ConsoleApp2
{
internal class PlaylistUpdates
{
public string PrivacyStatus { get; private set; }
[STAThread]
static void Main(string[] args)
{
Console.WriteLine("YouTube Data API: Playlist Updates");
Console.WriteLine("==================================");
try
{
//new PlaylistUpdates().Run().Wait();
//new PlaylistUpdates().RunUpload().Wait();
new PlaylistUpdates().Editvideo().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 Editvideo()
{
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 for read-only access to the authenticated
// user's account, but not other types of account access.
new[] { YouTubeService.Scope.YoutubeReadonly },
"user",
CancellationToken.None,
new FileDataStore(this.GetType().ToString())
);
}
var youtubeService = new YouTubeService(new BaseClientService.Initializer()
{
HttpClientInitializer = credential,
ApplicationName = this.GetType().ToString()
});
var channelsListRequest = youtubeService.Channels.List("contentDetails");
channelsListRequest.Mine = true;
// Retrieve the contentDetails part of the channel resource for the authenticated user's channel.
var channelsListResponse = await channelsListRequest.ExecuteAsync();
foreach (var channel in channelsListResponse.Items)
{
// From the API response, extract the playlist ID that identifies the list
// of videos uploaded to the authenticated user's channel.
var uploadsListId = channel.ContentDetails.RelatedPlaylists.Uploads;
Console.WriteLine("Videos in list {0}", uploadsListId);
var nextPageToken = "";
while (nextPageToken != null)
{
var playlistItemsListRequest = youtubeService.PlaylistItems.List("snippet,status");
playlistItemsListRequest.PlaylistId = uploadsListId;
playlistItemsListRequest.MaxResults = 50;
playlistItemsListRequest.PageToken = nextPageToken;
// Create a new, private playlist in the authorized user's channel.
var newVideo = new Video();
newVideo.Snippet = new VideoSnippet();
newVideo.Id = "6obQQde1X3A";
newVideo.Snippet.Title = "My Title";
newVideo.Snippet.Description = "My Description";
newVideo.Snippet.Tags = new string[] { "tag 1", "tag 2", "tag 3" };
newVideo.Snippet.CategoryId = "22";
newVideo.Status = new VideoStatus();
newVideo.Status.PrivacyStatus = "public";
newVideo = await youtubeService.Videos.Update(newVideo,"Id,snippet,status").ExecuteAsync();
Console.WriteLine("Change video details OK ....");
// Retrieve the list of videos uploaded to the authenticated user's channel.
var playlistItemsListResponse = await playlistItemsListRequest.ExecuteAsync();
foreach (var playlistItem in playlistItemsListResponse.Items)
{
Console.WriteLine("{0} ({1})", playlistItem.Snippet.Title, playlistItem.Snippet.ResourceId.VideoId);
}
nextPageToken = playlistItemsListResponse.NextPageToken;
}
}
}
}
}
If i remove this code below. It worked fine!
// Create a new, private playlist in the authorized user's channel.
var newVideo = new Video();
newVideo.Snippet = new VideoSnippet();
newVideo.Id = "6obQQde1X3A";
newVideo.Snippet.Title = "My Title";
newVideo.Snippet.Description = "My Description";
newVideo.Snippet.Tags = new string[] { "tag 1", "tag 2", "tag 3" };
newVideo.Snippet.CategoryId = "22";
newVideo.Status = new VideoStatus();
newVideo.Status.PrivacyStatus = "public";
newVideo = await youtubeService.Videos.Update(newVideo,"Id,snippet,status").ExecuteAsync();
Console.WriteLine("Change video details OK ....");
This is my code in WPF
private async Task Change_VideoDetails()
{
UserCredential credential;
using (var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
{
credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
new[] { YouTubeService.Scope.YoutubeReadonly },
"user",
CancellationToken.None,
new FileDataStore(this.GetType().ToString())
);
}
var youtubeService = new YouTubeService(new BaseClientService.Initializer()
{
HttpClientInitializer = credential,
ApplicationName = this.GetType().ToString()
});
var channelsListRequest = youtubeService.Channels.List("contentDetails");
channelsListRequest.Mine = true;
// Retrieve the contentDetails part of the channel resource for the authenticated user's channel.
var channelsListResponse = await channelsListRequest.ExecuteAsync();
foreach (var channel in channelsListResponse.Items)
{
// From the API response, extract the playlist ID that identifies the list
// of videos uploaded to the authenticated user's channel.
var uploadsListId = channel.ContentDetails.RelatedPlaylists.Uploads;
//Console.WriteLine("Videos in list {0}", uploadsListId);
var nextPageToken = "";
while (nextPageToken != null)
{
var playlistItemsListRequest = youtubeService.PlaylistItems.List("Id,snippet,status");
playlistItemsListRequest.PlaylistId = uploadsListId;
playlistItemsListRequest.MaxResults = 50;
playlistItemsListRequest.PageToken = nextPageToken;
var newVideo = new Video();
newVideo.Snippet = new VideoSnippet();
newVideo.Id = "6obQQde1X3A";
txtLog.AppendText("\nWill change video details....." + newVideo.Id + );
txtLog.ScrollToEnd();
newVideo.Snippet = new VideoSnippet();
newVideo.Id = "6obQQde1X3A";
newVideo.Snippet.Title = "My Title";
newVideo.Snippet.Description = "My Description";
newVideo.Snippet.Tags = new string[] { "tag 1", "tag 2", "tag 3" };
newVideo.Snippet.CategoryId = "22";
newVideo.Status = new VideoStatus();
newVideo.Status.PrivacyStatus = "public";
newVideo = await youtubeService.Videos.Update(newVideo, "Id,snippet,status").ExecuteAsync();
txtLog.AppendText("\nChanged video details ....." + newVideo.Id);
txtLog.ScrollToEnd();
// Retrieve the list of videos uploaded to the authenticated user's channel.
var playlistItemsListResponse = await playlistItemsListRequest.ExecuteAsync();
int line_count=0;
foreach (var playlistItem in playlistItemsListResponse.Items)
{
line_count += 1;
if (line_count == int.Parse(txtVideonumber.Text))
{
break;
}
//}
}
nextPageToken = playlistItemsListResponse.NextPageToken;
}
}
}
I used below code for run above code:
private void BtnChange_Click(object sender, RoutedEventArgs e)
{
Change_VideoDetails();
}
I tried run debugger and my code is stopping at bellow code:
newVideo = await youtubeService.Videos.Update(newVideo, "Id,snippet,status").ExecuteAsync();
I don't understand why it is stopping? Please help me solve it

You must await an asynchronous method i.e. await the Task result:
// Since this is an event handler 'async void' is allowed.
// Otherwise you must use 'async Task' or 'async Task<T>'
private async void BtnChange_Click(object sender, RoutedEventArgs e)
{
await Change_VideoDetails();
}
Awaiting the Task is important to allow proper exception handling/behavior. If you don't await a Task then the exception will not propagate properly - the exception will be swallowed. This is because in an async method the exceptions are captured and placed on the Task object. When you await the Task, you allow the execption to propagate to the caller's context to finally hold your application or being handled in a catch block.
Your problem is difficult to solve for somebody that has no acces to your environment (including the Youtube account and authentication configuration).
First make sure that your debugger will break on all exceptions by enabling at least all CLR exceptions: select Debug/ Windows/Exception Setting in the main menu and check the "Common Language Runtime Exceptions" check box.
If still no exception is thrown in the debugger, remove the ExecuteAsync() to execute the operation synchronously. This way you can test if you encounter a deadlock. When it comes to async/await you must know that console apps, Asp.Net and Winforms/Wpf/UWP have a different behavior in certain aspects.

AndroidPublisherService - Play Developer API Client - Upload aab failes due to bad credentials

Trying to make use of the AndroidPublisherService from Play Developer API Client.
I can list active tracks and the releases in those tracks, but when I try to upload a new build there seems to be no way of attaching the authentication already made previously to read data.
I've authenticated using var googleCredentials = GoogleCredential.FromStream(keyDataStream) .CreateWithUser(serviceUsername); where serviceUsername is the email for my service account.
private static void Execute(string packageName, string aabfile, string credfile, string serviceUsername)
{
var credentialsFilename = credfile;
if (string.IsNullOrWhiteSpace(credentialsFilename))
{
// Check env. var
credentialsFilename =
Environment.GetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS",
EnvironmentVariableTarget.Process);
}
Console.WriteLine($"Using credentials {credfile} with package {packageName} for aab file {aabfile}");
var keyDataStream = File.OpenRead(credentialsFilename);
var googleCredentials = GoogleCredential.FromStream(keyDataStream)
.CreateWithUser(serviceUsername);
var credentials = googleCredentials.UnderlyingCredential as ServiceAccountCredential;
var service = new AndroidPublisherService();
var edit = service.Edits.Insert(new AppEdit { ExpiryTimeSeconds = "3600" }, packageName);
edit.Credential = credentials;
var activeEditSession = edit.Execute();
Console.WriteLine($"Edits started with id {activeEditSession.Id}");
var tracksList = service.Edits.Tracks.List(packageName, activeEditSession.Id);
tracksList.Credential = credentials;
var tracksResponse = tracksList.Execute();
foreach (var track in tracksResponse.Tracks)
{
Console.WriteLine($"Track: {track.TrackValue}");
Console.WriteLine("Releases: ");
foreach (var rel in track.Releases)
Console.WriteLine($"{rel.Name} version: {rel.VersionCodes.FirstOrDefault()} - Status: {rel.Status}");
}
using var fileStream = File.OpenRead(aabfile);
var upload = service.Edits.Bundles.Upload(packageName, activeEditSession.Id, fileStream, "application/octet-stream");
var uploadProgress = upload.Upload();
if (uploadProgress == null || uploadProgress.Exception != null)
{
Console.WriteLine($"Failed to upload. Error: {uploadProgress?.Exception}");
return;
}
Console.WriteLine($"Upload {uploadProgress.Status}");
var tracksUpdate = service.Edits.Tracks.Update(new Track
{
Releases = new List<TrackRelease>(new[]
{
new TrackRelease
{
Name = "Roswell - Grenis Dev Test",
Status = "completed",
VersionCodes = new List<long?>(new[] {(long?) upload?.ResponseBody?.VersionCode})
}
})
}, packageName, activeEditSession.Id, "internal");
tracksUpdate.Credential = credentials;
var trackResult = tracksUpdate.Execute();
Console.WriteLine($"Track {trackResult?.TrackValue}");
var commitResult = service.Edits.Commit(packageName, activeEditSession.Id);
Console.WriteLine($"{commitResult.EditId} has been committed");
}
And as the code points out, all action objects such as tracksList.Credential = credentials; can be given the credentials generated from the service account.
BUT the actual upload action var upload = service.Edits.Bundles.Upload(packageName, activeEditSession.Id, fileStream, "application/octet-stream"); does not expose a .Credential object, and it always fails with:
The service androidpublisher has thrown an exception: Google.GoogleApiException: Google.Apis.Requests.RequestError
Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project. [401]
Errors [
Message[Login Required.] Location[Authorization - header] Reason[required] Domain[global]
]
at Google.Apis.Upload.ResumableUpload`1.InitiateSessionAsync(CancellationToken cancellationToken)
at Google.Apis.Upload.ResumableUpload.UploadAsync(CancellationToken cancellationToken)
So, how would I go about providing the actual Upload action with the given credentials here?

Managed to figure this out during the day, I was missing one call to CreateScoped() when creating the GoogleCredential object as well as a call to InitiateSession() on the upload object.
var googleCredentials = GoogleCredential.FromStream(keyDataStream)
.CreateWithUser(serviceUsername)
.CreateScoped(AndroidPublisherService.Scope.Androidpublisher);
Once that was done I could then get a valid oauth token by calling
var googleCredentials = GoogleCredential.FromStream(keyDataStream)
.CreateWithUser(serviceUsername)
.CreateScoped(AndroidPublisherService.Scope.Androidpublisher);
var credentials = googleCredentials.UnderlyingCredential as ServiceAccountCredential;
var oauthToken = credentials?.GetAccessTokenForRequestAsync(AndroidPublisherService.Scope.Androidpublisher).Result;
And I can now use that oauth token in the upload request:
upload.OauthToken = oauthToken;
_ = await upload.InitiateSessionAsync();
var uploadProgress = await upload.UploadAsync();
if (uploadProgress == null || uploadProgress.Exception != null)
{
Console.WriteLine($"Failed to upload. Error: {uploadProgress?.Exception}");
return;
}
The full code example for successfully uploading a new aab file to google play store internal test track thus looks something like this:
private async Task UploadGooglePlayRelease(string fileToUpload, string changeLogFile, string serviceUsername, string packageName)
{
var serviceAccountFile = ResolveServiceAccountCertificateInfoFile();
if (!serviceAccountFile.Exists)
throw new ApplicationException($"Failed to find the service account certificate file. {serviceAccountFile.FullName}");
var keyDataStream = File.OpenRead(serviceAccountFile.FullName);
var googleCredentials = GoogleCredential.FromStream(keyDataStream)
.CreateWithUser(serviceUsername)
.CreateScoped(AndroidPublisherService.Scope.Androidpublisher);
var credentials = googleCredentials.UnderlyingCredential as ServiceAccountCredential;
var oauthToken = credentials?.GetAccessTokenForRequestAsync(AndroidPublisherService.Scope.Androidpublisher).Result;
var service = new AndroidPublisherService();
var edit = service.Edits.Insert(new AppEdit { ExpiryTimeSeconds = "3600" }, packageName);
edit.Credential = credentials;
var activeEditSession = await edit.ExecuteAsync();
_logger.LogInformation($"Edits started with id {activeEditSession.Id}");
var tracksList = service.Edits.Tracks.List(packageName, activeEditSession.Id);
tracksList.Credential = credentials;
var tracksResponse = await tracksList.ExecuteAsync();
foreach (var track in tracksResponse.Tracks)
{
_logger.LogInformation($"Track: {track.TrackValue}");
_logger.LogInformation("Releases: ");
foreach (var rel in track.Releases)
_logger.LogInformation($"{rel.Name} version: {rel.VersionCodes.FirstOrDefault()} - Status: {rel.Status}");
}
var fileStream = File.OpenRead(fileToUpload);
var upload = service.Edits.Bundles.Upload(packageName, activeEditSession.Id, fileStream, "application/octet-stream");
upload.OauthToken = oauthToken;
_ = await upload.InitiateSessionAsync();
var uploadProgress = await upload.UploadAsync();
if (uploadProgress == null || uploadProgress.Exception != null)
{
Console.WriteLine($"Failed to upload. Error: {uploadProgress?.Exception}");
return;
}
_logger.LogInformation($"Upload {uploadProgress.Status}");
var releaseNotes = await File.ReadAllTextAsync(changeLogFile);
var tracksUpdate = service.Edits.Tracks.Update(new Track
{
Releases = new List<TrackRelease>(new[]
{
new TrackRelease
{
Name = $"{upload?.ResponseBody?.VersionCode}",
Status = "completed",
InAppUpdatePriority = 5,
CountryTargeting = new CountryTargeting { IncludeRestOfWorld = true },
ReleaseNotes = new List<LocalizedText>(new []{ new LocalizedText { Language = "en-US", Text = releaseNotes } }),
VersionCodes = new List<long?>(new[] {(long?) upload?.ResponseBody?.VersionCode})
}
})
}, packageName, activeEditSession.Id, "internal");
tracksUpdate.Credential = credentials;
var trackResult = await tracksUpdate.ExecuteAsync();
_logger.LogInformation($"Track {trackResult?.TrackValue}");
var commitResult = service.Edits.Commit(packageName, activeEditSession.Id);
commitResult.Credential = credentials;
await commitResult.ExecuteAsync();
_logger.LogInformation($"{commitResult.EditId} has been committed");
}

Azure Management Libraries Sdk for .NET list() function not working for various interfaces

I'm using the Azure Management Libraries (specifically fluent) to create web request towards their api to get a list of my databases under my subscription. I'm able to get an instance of the sqlserver using fluent but am unable to get a list of all databases under a specific server.
Define and delete work fine it is just the list() function.
I've tried using it for sqlserver.firewallrules and the list function doesn't work there as well.
Here is some code:
The log at some point just pauses then writes "has exited with code 0"
public async Task<List<String>> getSqlDatabaseList()
{
System.Diagnostics.Debug.WriteLine("Starting to get database list");
List<string> dbNameList = new List<string>();
//the var azure is defined earlier in the project and is authenticated.
var sqlServer = await azure.SqlServers.GetByResourceGroupAsync("<resource group name>", "<server Name>");
//The code below successfully writes the server name
System.Diagnostics.Debug.WriteLine(sqlServer.Name);
//The code below here is where everyting stop and "has exited with code 0" happens after a few seconds of delay
var dbList = sqlServer.Databases.List();
//Never reaches this line
System.Diagnostics.Debug.WriteLine("This line never is written");
foreach (ISqlDatabase db in dbList)
{
dbNameList.Add(db.Name);
}
return dbNameList;
}
Clarification:
I'm using ASP.NET MVC
Here is how my controller method accesses the class method. Resource Manager is the name of the class that implements getSQlDatabaseList();
// GET: Home
public async Task<ActionResult> Index()
{
ResourceManager rm = new ResourceManager();
List<string> test = await rm.getSqlDatabaseList();
//Never Gets to this line of code and never calls the for each or anything after
foreach (var item in test)
{
System.Diagnostics.Debug.WriteLine(item);
}
System.Diagnostics.Debug.WriteLine("Is past for each");
//AzureManager azm = await AzureManager.createAzureManager();
//await azm.getResourceGroupList();
return View(new UserLogin());
}

According to your code and description, I guess the reason why your code couldn't create the table is about your async getSqlDatabaseList.
I guess you call this method in console main method or something else.
If your main method is executed completely, your async method getSqlDatabaseList isn't execute the completely and return the list of the string. It will end all async method.
I suggest you could add await or result key keyword when calling the getSqlDatabaseList method to wait the thread execute the method completely.
More details, you could refer to below test demo.
static void Main(string[] args)
{
//use result to wait the mehtod executed completely
List<String> test = getSqlDatabaseList().Result;
foreach (var item in test)
{
Console.WriteLine(item);
}
Console.Read();
}
public static async Task<List<String>> getSqlDatabaseList()
{
//System.Diagnostics.Debug.WriteLine("Starting to get database list");
List<string> dbNameList = new List<string>();
var credentials = SdkContext.AzureCredentialsFactory.FromFile(#"D:\Auth.txt");
var azure = Azure
.Configure()
.WithLogLevel(HttpLoggingDelegatingHandler.Level.Basic)
.Authenticate(credentials)
.WithDefaultSubscription();
var sqlServer = await azure.SqlServers.GetByResourceGroupAsync("groupname", "brandotest");
var dbList = sqlServer.Databases.List();
foreach (ISqlDatabase db in dbList)
{
dbNameList.Add(db.Name);
}
return dbNameList;
}
Update:
According to your description, I have created a test MVC application. As you say I have reproduce your issue.
I think there are something wrong with the azure management fluent SDK.
Here is a workaround, I suggest you could directly send rest api to get the database.
More details, you could refer to below codes:
Send the request to below url:
https://management.azure.com/subscriptions/{subscriptionsid}/resourceGroups/{resourceGroupsname}/providers/Microsoft.Sql/servers/{servername}/databases?api-version={apiversion}
public static List<String> getSqlDatabaseList()
{
//System.Diagnostics.Debug.WriteLine("Starting to get database list");
List<string> dbNameList = new List<string>();
string tenantId = "yourtenantid";
string clientId = "yourclientId";
string clientSecret = "clientSecret";
string subscriptionid = "subscriptionid";
string resourcegroup = "resourcegroupname";
string sqlservername = "brandotest";
string version = "2014-04-01";
string authContextURL = "https://login.windows.net/" + tenantId;
var authenticationContext = new AuthenticationContext(authContextURL);
var credential = new ClientCredential(clientId, clientSecret);
var result = authenticationContext.AcquireToken(resource: "https://management.azure.com/", clientCredential: credential);
if (result == null)
{
throw new InvalidOperationException("Failed to obtain the JWT token");
}
string token = result.AccessToken;
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(string.Format("https://management.azure.com/subscriptions/{0}/resourceGroups/{1}/providers/Microsoft.Sql/servers/{2}/databases?api-version={3}", subscriptionid, resourcegroup, sqlservername, version));
request.Method = "GET";
request.Headers["Authorization"] = "Bearer " + token;
request.ContentType = "application/json";
var httpResponse = (HttpWebResponse)request.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
string jsonResponse = streamReader.ReadToEnd();
dynamic json = JsonConvert.DeserializeObject(jsonResponse);
dynamic resultList = json.value.Children();
foreach (var item in resultList)
{
dbNameList.Add(((Newtonsoft.Json.Linq.JValue)item.name).Value.ToString());
}
}
return dbNameList;
}
Result:
Another workaround.
I suggest you could use thread.join to wait the list method execute completely.
Code:
public static async Task<List<String>> getSqlDatabaseList()
{
//System.Diagnostics.Debug.WriteLine("Starting to get database list");
List<string> dbNameList = new List<string>();
var credentials = SdkContext.AzureCredentialsFactory.FromFile(#"D:\Auth.txt");
var azure = Azure
.Configure()
.WithLogLevel(HttpLoggingDelegatingHandler.Level.Basic)
.Authenticate(credentials)
.WithDefaultSubscription();
var sqlServer = await azure.SqlServers.GetByResourceGroupAsync("brandosecondtest", "brandotest");
IReadOnlyList<ISqlDatabase> dbList = null;
Thread thread = new Thread(() => { dbList = sqlServer.Databases.List(); });
thread.Start();
//wait the thread
thread.Join();
foreach (ISqlDatabase db in dbList)
{
dbNameList.Add(db.Name);
}
return dbNameList;
}
Result:

Google Calendar API for UWP Windows 10 Application One or more errors occurred

I'm trying to use Google Calendar API v3, but i have problems while running the codes, it always gives me that error :
An exception of type 'System.AggregateException' occurred in mscorlib.ni.dll but was not handled in user code
Additional information: One or more errors occurred.
I don't know why it does, also It should work as well. Here is a screenshot for it :
Also my codes are :
UserCredential credential;
credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
new Uri("ms-appx:///Assets/client_secrets.json"),
Scopes,
"user",
CancellationToken.None).Result;
// Create Google Calendar API service.
var service = new CalendarService(new BaseClientService.Initializer()
{
HttpClientInitializer = credential,
ApplicationName = ApplicationName,
});
var calendarService = new CalendarService(new BaseClientService.Initializer
{
HttpClientInitializer = credential,
ApplicationName = "Windows 10 Calendar sample"
});
var calendarListResource = await calendarService.CalendarList.List().ExecuteAsync();
If you can at least help with calling it through REST API, that would be great too, but you must consider that it's UWP, so it has another way to get it work as well.
As i already tried through REST API, but i always get "Request error code 400".
Thanks for your attention.

The Google API Client Library for .NET does not support UWP by now. So we can't use Google.Apis.Calendar.v3 Client Library in UWP apps now. For more info, please see the similar question: Universal Windows Platform App with google calendar.
To use Google Calendar API in UWP, we can call it through REST API. To use the REST API, we need to authorize requests first. For how to authorize requests, please see Authorizing Requests to the Google Calendar API and Using OAuth 2.0 for Mobile and Desktop Applications.
After we have the access token, we can call Calendar API like following:
var clientId = "{Your Client Id}";
var redirectURI = "pw.oauth2:/oauth2redirect";
var scope = "https://www.googleapis.com/auth/calendar.readonly";
var SpotifyUrl = $"https://accounts.google.com/o/oauth2/auth?client_id={clientId}&redirect_uri={Uri.EscapeDataString(redirectURI)}&response_type=code&scope={Uri.EscapeDataString(scope)}";
var StartUri = new Uri(SpotifyUrl);
var EndUri = new Uri(redirectURI);
// Get Authorization code
WebAuthenticationResult WebAuthenticationResult = await WebAuthenticationBroker.AuthenticateAsync(WebAuthenticationOptions.None, StartUri, EndUri);
if (WebAuthenticationResult.ResponseStatus == WebAuthenticationStatus.Success)
{
var decoder = new WwwFormUrlDecoder(new Uri(WebAuthenticationResult.ResponseData).Query);
if (decoder[0].Name != "code")
{
System.Diagnostics.Debug.WriteLine($"OAuth authorization error: {decoder.GetFirstValueByName("error")}.");
return;
}
var autorizationCode = decoder.GetFirstValueByName("code");
//Get Access Token
var pairs = new Dictionary<string, string>();
pairs.Add("code", autorizationCode);
pairs.Add("client_id", clientId);
pairs.Add("redirect_uri", redirectURI);
pairs.Add("grant_type", "authorization_code");
var formContent = new Windows.Web.Http.HttpFormUrlEncodedContent(pairs);
var client = new Windows.Web.Http.HttpClient();
var httpResponseMessage = await client.PostAsync(new Uri("https://www.googleapis.com/oauth2/v4/token"), formContent);
if (!httpResponseMessage.IsSuccessStatusCode)
{
System.Diagnostics.Debug.WriteLine($"OAuth authorization error: {httpResponseMessage.StatusCode}.");
return;
}
string jsonString = await httpResponseMessage.Content.ReadAsStringAsync();
var jsonObject = Windows.Data.Json.JsonObject.Parse(jsonString);
var accessToken = jsonObject["access_token"].GetString();
//Call Google Calendar API
using (var httpRequest = new Windows.Web.Http.HttpRequestMessage())
{
string calendarAPI = "https://www.googleapis.com/calendar/v3/users/me/calendarList";
httpRequest.Method = Windows.Web.Http.HttpMethod.Get;
httpRequest.RequestUri = new Uri(calendarAPI);
httpRequest.Headers.Authorization = new Windows.Web.Http.Headers.HttpCredentialsHeaderValue("Bearer", accessToken);
var response = await client.SendRequestAsync(httpRequest);
if (response.IsSuccessStatusCode)
{
var listString = await response.Content.ReadAsStringAsync();
//TODO
}
}
}

I have the Google .NET Client working in my UWP app. The trick is that you have to put it in a .NET Standard 2.0 Class Library, expose the API services you need, and then reference that library from your UWP app.
Also, you have to handle the getting the auth token yourself. It's not that much work and the Drive APIs and Calendar APIs work just fine (the only ones I've tried). You can see that I pass in a simple class that contains the auth token and other auth details to a method called Initialize.
Here is the single class I used in the .NET Standard 2.0 class library:
namespace GoogleProxy
{
public class GoogleService
{
public CalendarService calendarService { get; private set; }
public DriveService driveService { get; private set; }
public GoogleService()
{
}
public void Initialize(AuthResult authResult)
{
var credential = GetCredentialForApi(authResult);
var baseInitializer = new BaseClientService.Initializer { HttpClientInitializer = credential, ApplicationName = "{your app name here}" };
calendarService = new Google.Apis.Calendar.v3.CalendarService(baseInitializer);
driveService = new Google.Apis.Drive.v3.DriveService(baseInitializer);
}
private UserCredential GetCredentialForApi(AuthResult authResult)
{
var initializer = new GoogleAuthorizationCodeFlow.Initializer
{
ClientSecrets = new ClientSecrets
{
ClientId = "{your app client id here}",
ClientSecret = "",
},
Scopes = new string[] { "openid", "email", "profile", "https://www.googleapis.com/auth/calendar.readonly", "https://www.googleapis.com/auth/calendar.events.readonly", "https://www.googleapis.com/auth/drive.readonly" },
};
var flow = new GoogleAuthorizationCodeFlow(initializer);
var token = new TokenResponse()
{
AccessToken = authResult.AccessToken,
RefreshToken = authResult.RefreshToken,
ExpiresInSeconds = authResult.ExpirationInSeconds,
IdToken = authResult.IdToken,
IssuedUtc = authResult.IssueDateTime,
Scope = "openid email profile https://www.googleapis.com/auth/calendar.readonly https://www.googleapis.com/auth/calendar.events.readonly https://www.googleapis.com/auth/drive.readonly",
TokenType = "bearer" };
return new UserCredential(flow, authResult.Id, token);
}
}
}
In order to get the Auth token from google, you have to use custom schemes. Register your app as an 'iOS' app on the google services console and put in a URI scheme (something unique). Then add this scheme to your UWP manifest under Declarations->Protocol. Handle it in your App.xaml.cs:
protected override void OnActivated(IActivatedEventArgs args)
{
base.OnActivated(args);
if (args.Kind == ActivationKind.Protocol)
{
ProtocolActivatedEventArgs protocolArgs = (ProtocolActivatedEventArgs)args;
Uri uri = protocolArgs.Uri;
Debug.WriteLine("Authorization Response: " + uri.AbsoluteUri);
locator.AccountsService.GoogleExternalAuthWait.Set(uri.Query);
}
}
That GoogleExternalAuthWait comes from some magical code I found about how to create an asynchronous ManualResetEvent. https://blogs.msdn.microsoft.com/pfxteam/2012/02/11/building-async-coordination-primitives-part-1-asyncmanualresetevent/ It looks like this (I only converted it to generic).
public class AsyncManualResetEvent<T>
{
private volatile TaskCompletionSource<T> m_tcs = new TaskCompletionSource<T>();
public Task<T> WaitAsync() { return m_tcs.Task; }
public void Set(T TResult) { m_tcs.TrySetResult(TResult); }
public bool IsReset => !m_tcs.Task.IsCompleted;
public void Reset()
{
while (true)
{
var tcs = m_tcs;
if (!tcs.Task.IsCompleted ||
Interlocked.CompareExchange(ref m_tcs, new TaskCompletionSource<T>(), tcs) == tcs)
return;
}
}
}
This is how you start the Google Authorization. What happens is it launches an external browser to begin the google signing process and then wait (that's what the AsyncManualResetEvent does). When you're done, Google will launch a URI using your custom scheme. You should get a message dialog saying the browser is trying to open an app... click ok and the AsyncManualResetEvent continues and finishes the auth process. You'll need to make a class that contains all the auth info to pass to your class library.
private async Task<AuthResult> AuthenticateGoogleAsync()
{
try
{
var stateGuid = Guid.NewGuid().ToString();
var expiration = DateTimeOffset.Now;
var url = $"{GoogleAuthorizationEndpoint}?client_id={WebUtility.UrlEncode(GoogleAccountClientId)}&redirect_uri={WebUtility.UrlEncode(GoogleRedirectURI)}&state={stateGuid}&scope={WebUtility.UrlEncode(GoogleScopes)}&display=popup&response_type=code";
var success = Windows.System.Launcher.LaunchUriAsync(new Uri(url));
GoogleExternalAuthWait = new AsyncManualResetEvent<string>();
var query = await GoogleExternalAuthWait.WaitAsync();
var dictionary = query.Substring(1).Split('&').ToDictionary(x => x.Split('=')[0], x => Uri.UnescapeDataString(x.Split('=')[1]));
if (dictionary.ContainsKey("error"))
{
return null;
}
if (!dictionary.ContainsKey("code") || !dictionary.ContainsKey("state"))
{
return null;
}
if (dictionary["state"] != stateGuid)
return null;
string tokenRequestBody = $"code={dictionary["code"]}&redirect_uri={Uri.EscapeDataString(GoogleRedirectURI)}&client_id={GoogleAccountClientId}&access_type=offline&scope=&grant_type=authorization_code";
StringContent content = new StringContent(tokenRequestBody, Encoding.UTF8, "application/x-www-form-urlencoded");
// Performs the authorization code exchange.
using (HttpClientHandler handler = new HttpClientHandler())
{
handler.AllowAutoRedirect = true;
using (HttpClient client = new HttpClient(handler))
{
HttpResponseMessage response = await client.PostAsync(GoogleTokenEndpoint, content);
if (response.IsSuccessStatusCode)
{
var stringResponse = await response.Content.ReadAsStringAsync();
var json = JObject.Parse(stringResponse);
var id = DecodeIdFromJWT((string)json["id_token"]);
var oauthToken = new AuthResult()
{
Provider = AccountType.Google,
AccessToken = (string)json["access_token"],
Expiration = DateTimeOffset.Now + TimeSpan.FromSeconds(int.Parse((string)json["expires_in"])),
Id = id,
IdToken = (string)json["id_token"],
ExpirationInSeconds = long.Parse((string)json["expires_in"]),
IssueDateTime = DateTime.Now,
RefreshToken = (string)json["refresh_token"]
};
return oauthToken;
}
else
{
return null;
}
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
return null;
}
}

The redirect URI in the request: http://localhost:12349/authorize/ did not match a registered redirect URI

I'm getting this error while trying to run my c# console application... I am trying to call google calender api v3 to fetch calender and add event to calender. According to the sample code from google-api-dotnet-client I am doing this.( https://code.google.com/p/google-api-dotnet-client/source/browse/Calendar.VB.ConsoleApp/Program.vb?repo=samples ) Here is the vb.net code. I am using this sample after converting it to c# code.
Here is my code:
class Program
{
static void Main(string[] args)
{
try
{
new Program().Run().Wait();
}
catch (AggregateException ex)
{
foreach (var e in ex.InnerExceptions)
{
Console.WriteLine("ERROR: " + e.Message);
}
}
}
private async Task Run()
{
UserCredential credential;
IList<string> scopes = new List<string>();
CalendarService service;
scopes.Add(CalendarService.Scope.Calendar);
using (var stream = new FileStream("client_secrets.json", FileMode.Open, FileAccess.Read))
{
// problem occuring during executing this statement.
credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
scopes,
"user", CancellationToken.None, new FileDataStore("Calender.SampleApp") );
}
BaseClientService.Initializer initializer = new BaseClientService.Initializer();
initializer.HttpClientInitializer = credential;
initializer.ApplicationName = "C# Calendar Sample";
service = new CalendarService(initializer);
Event newEvent = new Event();
newEvent.Summary = "Appointment";
newEvent.Description = "Need to meet my Uncle";
IList<EventReminder> reminders = new List<EventReminder>();
reminders.Add(new EventReminder { Method = "sms", Minutes = 10 });
newEvent.Reminders = new Event.RemindersData { UseDefault = false, Overrides = reminders };
newEvent.Recurrence = new String[] { "DTSTART;TZID=Bangladesh Standard Time:20140124T163000;RRULE:FREQ=DAILY" };
IList<EventAttendee> attendees = new List<EventAttendee>();
attendees.Add(new EventAttendee { Email = "hannan.cse.m#gmail.com", Organizer = true, DisplayName = "Hannan" });
newEvent.Attendees = attendees;
newEvent.GuestsCanInviteOthers = false;
newEvent.GuestsCanModify = false;
newEvent.GuestsCanSeeOtherGuests = false;
newEvent.Location = "Dhaka, Bangladesh";
newEvent.Start = new EventDateTime { DateTime = DateTime.Now, TimeZone = "Bangladesh Standard Time" };
Event recurringEvent = service.Events.Insert(newEvent, "primary").Execute();
var list = await service.CalendarList.List().ExecuteAsync();
}
}
This is my redirect URIs in my GoogleDevelopers Console project.
Redirect URIs: http://localhost:7744/authorize/
And this is the error message shown in browser.
I couldn't find any way to resolve this problem. Some help will be appreciable. I also search all the realted post in stackoverflow. But I couldn't find it's solution.

I think you are doing something wrong while "create client id" in GoogleDevelopers Console. Make sure that you have chosed "Installed application" in application type to access your project from console application.
Have a look in the attached image. According to request type you must create clientid
and credintials in your registered application in Google Developers Console.
You don't need to define redirect uri in console application while authenticating.

I was having this error on a simple test program (https://ctrlq.org/google.apps.script/docs/guides/rest/quickstart/dotnet.html), and it happens to be the client_secret.json was th wrong one, download it again and it worked.