Not working example for Dialogflow V2 api - c#

Experienced problems with C# SDK documentation which can be found here:
http://googleapis.github.io/google-cloud-dotnet/docs/Google.Cloud.Dialogflow.V2/api/Google.Cloud.Dialogflow.V2.SessionsClient.html#Google_Cloud_Dialogflow_V2_SessionsClient_Create_Google_Api_Gax_Grpc_ServiceEndpoint_Google_Cloud_Dialogflow_V2_SessionsSettings_
No reference for method ToChannelCredentials().
We cannot connect the SDK to dialogflow, even with blank project. Is this method still existing or deprecated?
using Google.Cloud.Dialogflow.V2;
using Google.Apis.Auth.OAuth2;
using Grpc.Auth;
using Grpc.Core;
...
GoogleCredential cred = GoogleCredential.FromFile("/path/to/credentials.json");
Channel channel = new Channel(
SessionsClient.DefaultEndpoint.Host, SessionsClient.DefaultEndpoint.Port, cred.ToChannelCredentials());
SessionsClient client = SessionsClient.Create(channel);
...
// Shutdown the channel when it is no longer required.
channel.ShutdownAsync().Wait();

Have you tried connecting using the service account private key ? (Json file)
Follow these steps (working example in C#)
After you create a Dialogflow agent go to the agent's settings --> General --> click on the Service Account link
You will be sent to to google cloud platform where you can create a service account
After you create a service account, there will be an option to create a KEY, create it and download the (JSON) format of it
This key will be used to connect from your C# project to the Dialogflow agent
Install Google.Cloud.Dialogflow.V2 package in your project
Create for example a Dialogflow manager class (check below for an example)
public class DialogflowManager {
private string _userID;
private string _webRootPath;
private string _contentRootPath;
private string _projectId;
private SessionsClient _sessionsClient;
private SessionName _sessionName;
public DialogflowManager(string userID, string webRootPath, string contentRootPath, string projectId) {
_userID = userID;
_webRootPath = webRootPath;
_contentRootPath = contentRootPath;
_projectId = projectId;
SetEnvironmentVariable();
}
private void SetEnvironmentVariable() {
try {
Environment.SetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS", _contentRootPath + "\\Keys\\{THE_DOWNLOADED_JSON_FILE_HERE}.json");
} catch (ArgumentNullException) {
throw;
} catch (ArgumentException) {
throw;
} catch (SecurityException) {
throw;
}
}
private async Task CreateSession() {
// Create client
_sessionsClient = await SessionsClient.CreateAsync();
// Initialize request argument(s)
_sessionName = new SessionName(_projectId, _userID);
}
public async Task < QueryResult > CheckIntent(string userInput, string LanguageCode = "en") {
await CreateSession();
QueryInput queryInput = new QueryInput();
var queryText = new TextInput();
queryText.Text = userInput;
queryText.LanguageCode = LanguageCode;
queryInput.Text = queryText;
// Make the request
DetectIntentResponse response = await _sessionsClient.DetectIntentAsync(_sessionName, queryInput);
return response.QueryResult;
}
}
And then this can be called like this for example to get detect Intents
DialogflowManager dialogflow = new DialogflowManager("{INSERT_USER_ID}",
_hostingEnvironment.WebRootPath,
_hostingEnvironment.ContentRootPath,
"{INSERT_AGENT_ID");
var dialogflowQueryResult = await dialogflow.CheckIntent("{INSERT_USER_INPUT}");

Related

Xamarin forms WebAuthenticator usage

I'm trying to implement Facebook Auth for Xamarin Forms App.
I'm doing everything like in this tutorial https://learn.microsoft.com/en-us/xamarin/essentials/web-authenticator?tabs=android so I'm using server side auth. Here is my mobile app code:
public class WebAuthViewModel:ObservableObject
{
private const string AuthenticationUrl = "https://myapp.com/mobileauth/";
private string _accessToken = "";
private bool _isAuthenticated = false;
public string AuthToken
{
get => _accessToken;
set => SetProperty(ref _accessToken, value);
}
public ICommand FacebookCommand { get; }
public WebAuthViewModel()
{
FacebookCommand = new Command(async()=>await OnAuthenticate("Facebook"));
}
async Task OnAuthenticate(string scheme)
{
try
{
WebAuthenticatorResult result = null;
var authUrl = new Uri(AuthenticationUrl + scheme);
var callbackUrl = new Uri("myapp://");
result = await WebAuthenticator.AuthenticateAsync(authUrl, callbackUrl);
AuthToken = string.Empty;
if (result.Properties.TryGetValue("name", out var name) && !string.IsNullOrEmpty(name))
{
AuthToken += $"Name: {name}{Environment.NewLine}";
}
if (result.Properties.TryGetValue("email", out var email) && !string.IsNullOrEmpty(email))
{
AuthToken += $"Email: {email}{Environment.NewLine}";
}
AuthToken += result?.AccessToken ?? result?.IdToken;
IsAuthenticated = true;
}
catch (Exception ex)
{
AuthToken = string.Empty;
}
}
}
Also I have some back-end code. All this works fine, I'm getting access token, UserId and so on.
But I still have some questions.
What is the right way to validate if login is still valid?
How should I authorize app actions?
And how could I implement Logout?
I will be grateful for advices or links.
As a user, you don’t want to have to sign in every time you use the app. Luckily, MSAL already caches your authorization and can log you in silently if it’s still valid.When properly authenticated we receive an access token that we can subsequently use to query other APIs that are secured by MSAL.
Signing out is pretty straight forward. We go through all the available accounts that MSAL has locally cached for us and sign them out. We also clear the access token that we stored in secure storage when we signed in.
public async Task<bool> SignOutAsync()
{
try
{
var accounts = await _pca.GetAccountsAsync();
// Go through all accounts and remove them.
while (accounts.Any())
{
await _pca.RemoveAsync(accounts.FirstOrDefault());
accounts = await _pca.GetAccountsAsync();
}
// Clear our access token from secure storage.
SecureStorage.Remove("AccessToken");
return true;
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
return false;
}
}

Nuget.Core Download all Nuget-Packages Authentication failing

I want to download all nuget packages from a private nuget feed, but my authentication is failing.
public void DownloadPackages(string repositoryPath, string directoryPath)
{
var repo = PackageRepositoryFactory.Default
.CreateRepository(repositoryPath);
var allPackages = repo.GetPackages();
foreach (var package in allPackages)
{
var fileName = Path.ChangeExtension(Path.Combine(directoryPath, package.GetFullName()), ".nupkg");
Console.WriteLine($"Downloading {package.GetFullName()}");
try
{
using (var stream = package.GetStream())
{
using (var fileStream = File.Create(fileName))
{
stream.CopyTo(fileStream);
}
}
}
catch (Exception ex)
{
Console.WriteLine($"Error while downloading {package.GetFullName()}: {ex.Message}");
}
}
}
public void InitializeCredentials(string url, string userName, string password)
{
var credentials = new NetworkCredential(userName, password);
CredentialStore.Instance.Add(new Uri(url), credentials);
}
I initialize my Credentials like this with InitializeCredentials.
But it still gives me Error 401 from the server.
I saw that visual studio generated an ApiKey for my private nuget-feed.
How can I place my ApiKey into my code - I see no possibility at var repo = PackageRepositoryFactory.Default .CreateRepository(repositoryPath); for example.
So I think my problem is the missing ApiKey, but maybe I am using the wrong authentication InitializeCredentials ?
EDIT:
So I am sure now - that it can't be the ApiKey - but what am I missing?
EDIT:
I am calling my methods like this:
var helper = new PackageHelper();
helper.InitializeCredentials("User","Password");
helper.DownloadPackages("NuGetUrl", "MyLocalFolder");

How to get the hub notification that is not full?

I have a notification hub, and it, have a hub-namespace and it is almost full.
I'll create another hub, how do I programmatically know (Android), which one should I enter the user?
Android source code:
public class NotificationSettings {
public static String SenderId = "MyFirebaseSenderId";
public static String HubName = "myhub-hub";
public static String HubListenConnectionString = "Endpoint=sb://myapp.serv.../;SharedAccessKeyName=D..ure;SharedAccessKey=K..t/n8I/X..=";
}
RegistrationIntent:
public class RegistrationIntentService extends IntentService {
private static final String TAG = "RegIntentService";
private NotificationHub hub;
public RegistrationIntentService() {
super(TAG);
}
public ApplicationUtils getApplicationUtils() {
return (ApplicationUtils) getApplication();
}
#Override
protected void onHandleIntent(Intent intent) {
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
String resultString = null;
String regID = null;
String storedToken = null;
String tag = null;
try {
tag ="_UserId:" + getApplicationUtils().getUsuario().Id;
} catch (Exception e){
return;
}
try {
if(FirebaseInstanceId.getInstance() == null){
FirebaseApp.initializeApp(this);
}
String FCM_token = FirebaseInstanceId.getInstance().getToken();
SaveSharedPreferences.setFCM(getApplicationContext(),FCM_token);
Log.d(TAG, "FCM Registration Token: " + FCM_token);
// Storing the registration id that indicates whether the generated token has been
// sent to your server. If it is not stored, send the token to your server,
// otherwise your server should have already received the token.
if (((regID=sharedPreferences.getString("registrationID", null)) == null)){
NotificationHub hub = new NotificationHub(NotificationSettings.HubName,
NotificationSettings.HubListenConnectionString, this);
Log.d(TAG, "Attempting a new registration with NH using FCM token : " + FCM_token);
regID = hub.register(FCM_token, tag).getRegistrationId();
// If you want to use tags...
// Refer to : https://azure.microsoft.com/en-us/documentation/articles/notification-hubs-routing-tag-expressions/
// regID = hub.register(token, "tag1,tag2").getRegistrationId();
resultString = "New NH Registration Successfully - RegId : " + regID;
Log.d(TAG, resultString);
sharedPreferences.edit().putString("registrationID", regID ).apply();
sharedPreferences.edit().putString("FCMtoken", FCM_token ).apply();
}
// Check if the token may have been compromised and needs refreshing.
else if (!((storedToken=sharedPreferences.getString("FCMtoken", "")).equals(FCM_token))) {
NotificationHub hub = new NotificationHub(NotificationSettings.HubName,
NotificationSettings.HubListenConnectionString, this);
Log.d(TAG, "NH Registration refreshing with token : " + FCM_token);
regID = hub.register(FCM_token, tag).getRegistrationId();
// If you want to use tags...
// Refer to : https://azure.microsoft.com/en-us/documentation/articles/notification-hubs-routing-tag-expressions/
// regID = hub.register(token, "tag1,tag2").getRegistrationId();
resultString = "New NH Registration Successfully - RegId : " + regID;
Log.d(TAG, resultString);
sharedPreferences.edit().putString("registrationID", regID ).apply();
sharedPreferences.edit().putString("FCMtoken", FCM_token ).apply();
}
else {
resultString = "Previously Registered Successfully - RegId : " + regID;
}
} .............................................
Now, it follows my downend code below, I do not know if it would be important in this case. But, it is developed in C # .Net:
public static async void sendPushNotification(ApiController controller, DataObjects.Notification notification)
{
// Get the settings for the server project.
HttpConfiguration config = controller.Configuration;
MobileAppSettingsDictionary settings =
controller.Configuration.GetMobileAppSettingsProvider().GetMobileAppSettings();
// Get the Notification Hubs credentials for the Mobile App.
string notificationHubName = settings.NotificationHubName;
string notificationHubConnection = settings
.Connections[MobileAppSettingsKeys.NotificationHubConnectionString].ConnectionString;
// Create a new Notification Hub client.
NotificationHubClient hub = NotificationHubClient.CreateClientFromConnectionString(notificationHubConnection, notificationHubName);
// Android payload
JObject data = new JObject();
data.Add("Id", notification.Id);
data.Add("Descricao", notification.Descricao);
...
//alteração com a colocação da tag priority em caso de erro teste sem
var androidNotificationPayload = "{ \"data\" : {\"message\":" + JsonConvert.SerializeObject(data) + "}}";
try
{
// Send the push notification and log the results.
String tag = "_UserId:"+notification.Id_usuario;
//var result = await hub.SendGcmNativeNotificationAsync(androidNotificationPayload);
var result = await hub.SendGcmNativeNotificationAsync(androidNotificationPayload, tag);
// Write the success result to the logs.
config.Services.GetTraceWriter().Info(result.State.ToString());
}
catch (System.Exception ex)
{
// Write the failure result to the logs.
config.Services.GetTraceWriter().Error(ex.Message, null, "Push.SendAsync Error");
}
}
I need a lot of help on this issue.
Thank you so much for this.
According to your description, I suggest you could write a api method which will insert new user to the notification hub(not on the client side) after checking the registrations is full or not.
We could use NotificationHubClient.GetAllRegistrationsAsync Method to get all AllRegistrations to local. Then we could count its number.
After checking successfully, then we will check enter user to which hub.
The workflow is:
New user registered:
Client: Send the user information to server web api method
Server: Check the notification hub is full(By calling NotificationHubClient.GetAllRegistrationsAsync or directly registered user if it failed registered into new hub)
Besides, notification hub provides different pricing tier.
I suggest you could consider scaling up your pricing tier to support multiple active devices.

Uploading objects to google cloud storage buckets in c#

Can someone please provide an example of how to use Google.Apis.Storage.v1 for uploading files to google cloud storage in c#?
I found that this basic operation is not as straight forward as you might expect. Google's documentation about it's Storage API is lacking in information about using it in C# (or any other .NET language). Searching for 'how to upload file to google cloud storage in c#' didn't exactly help me, so here is my working solution with some comments:
Preparation:
You need to create OAuth2 account in your Google Developers Console - go to Project/APIs & auth/Credentials.
Copy Client ID & Client Secret to your code. You will also need your Project name.
Code (it assumes that you've added Google.Apis.Storage.v1 via NuGet):
First, you need to authorize your requests:
var clientSecrets = new ClientSecrets();
clientSecrets.ClientId = clientId;
clientSecrets.ClientSecret = clientSecret;
//there are different scopes, which you can find here https://cloud.google.com/storage/docs/authentication
var scopes = new[] {#"https://www.googleapis.com/auth/devstorage.full_control"};
var cts = new CancellationTokenSource();
var userCredential = await GoogleWebAuthorizationBroker.AuthorizeAsync(clientSecrets,scopes, "yourGoogle#email", cts.Token);
Sometimes you might also want to refresh authorization token via:
await userCredential.RefreshTokenAsync(cts.Token);
You also need to create Storage Service:
var service = new Google.Apis.Storage.v1.StorageService();
Now you can make requests to Google Storage API.
Let's start with creating a new bucket:
var newBucket = new Google.Apis.Storage.v1.Data.Bucket()
{
Name = "your-bucket-name-1"
};
var newBucketQuery = service.Buckets.Insert(newBucket, projectName);
newBucketQuery.OauthToken = userCredential.Result.Token.AccessToken;
//you probably want to wrap this into try..catch block
newBucketQuery.Execute();
And it's done. Now, you can send a request to get list of all of your buckets:
var bucketsQuery = service.Buckets.List(projectName);
bucketsQuery.OauthToken = userCredential.Result.Token.AccessToken;
var buckets = bucketsQuery.Execute();
Last part is uploading new file:
//enter bucket name to which you want to upload file
var bucketToUpload = buckets.Items.FirstOrDefault().Name;
var newObject = new Object()
{
Bucket = bucketToUpload,
Name = "some-file-"+new Random().Next(1,666)
};
FileStream fileStream = null;
try
{
var dir = Directory.GetCurrentDirectory();
var path = Path.Combine(dir, "test.png");
fileStream = new FileStream(path, FileMode.Open);
var uploadRequest = new Google.Apis.Storage.v1.ObjectsResource.InsertMediaUpload(service, newObject,
bucketToUpload,fileStream,"image/png");
uploadRequest.OauthToken = userCredential.Result.Token.AccessToken;
await uploadRequest.UploadAsync();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (fileStream != null)
{
fileStream.Dispose();
}
}
And bam! New file will be visible in you Google Developers Console inside of selected bucket.
You can use Google Cloud APIs without SDK in the following ways:
Required api-key.json file
Install package Google.Apis.Auth.OAuth2 in order to authorize the
HTTP web request
You can set the default configuration for your application in this
way
I did the same using .NET core web API and details are given below:
Url details:
"GoogleCloudStorageBaseUrl": "https://www.googleapis.com/upload/storage/v1/b/",
"GoogleSpeechBaseUrl": "https://speech.googleapis.com/v1/operations/",
"GoogleLongRunningRecognizeBaseUrl": "https://speech.googleapis.com/v1/speech:longrunningrecognize",
"GoogleCloudScope": "https://www.googleapis.com/auth/cloud-platform",
public void GetConfiguration()
{
// Set global configuration
bucketName = _configuration.GetValue<string>("BucketName");
googleCloudStorageBaseUrl = _configuration.GetValue<string>("GoogleCloudStorageBaseUrl");
googleSpeechBaseUrl = _configuration.GetValue<string>("GoogleSpeechBaseUrl");
googleLongRunningRecognizeBaseUrl = _configuration.GetValue<string>("GoogleLongRunningRecognizeBaseUrl");
// Set google cloud credentials
string googleApplicationCredentialsPath = _configuration.GetValue<string>("GoogleCloudCredentialPath");
using (Stream stream = new FileStream(googleApplicationCredentialsPath, FileMode.Open, FileAccess.Read))
googleCredential = GoogleCredential.FromStream(stream).CreateScoped(_configuration.GetValue<string>("GoogleCloudScope"));
}
Get Oauth token:
public string GetOAuthToken()
{
return googleCredential.UnderlyingCredential.GetAccessTokenForRequestAsync("https://accounts.google.com/o/oauth2/v2/auth", CancellationToken.None).Result;
}
To upload file to cloud bucket:
public async Task<string> UploadMediaToCloud(string filePath, string objectName = null)
{
string bearerToken = GetOAuthToken();
byte[] fileBytes = File.ReadAllBytes(filePath);
objectName = objectName ?? Path.GetFileName(filePath);
var baseUrl = new Uri(string.Format(googleCloudStorageBaseUrl + "" + bucketName + "/o?uploadType=media&name=" + objectName + ""));
using (WebClient client = new WebClient())
{
client.Headers.Add(HttpRequestHeader.Authorization, "Bearer " + bearerToken);
client.Headers.Add(HttpRequestHeader.ContentType, "application/octet-stream");
byte[] response = await Task.Run(() => client.UploadData(baseUrl, "POST", fileBytes));
string responseInString = Encoding.UTF8.GetString(response);
return responseInString;
}
}
In order to perform any action to the cloud API, just need to make a HttpClient get/post request as per the requirement.
Thanks
This is for Google.Cloud.Storage.V1 (not Google.Apis.Storage.v1), but appears to be a bit simpler to perform an upload now. I started with the Client libraries "Getting Started" instructions to create a service account and bucket, then experimented to find out how to upload an image.
The process I followed was:
Sign up for Google Cloud free trial
Create a new project in Google Cloud (remember the project name\ID for later)
Create a Project Owner service account - this will result in a json file being downloaded that contains the service account credentials. Remember where you put that file.
The getting started docs get you to add the path to the JSON credentials file into an environment variable called GOOGLE_APPLICATION_CREDENTIALS - I couldn't get this to work through the provided instructions. Turns out it is not required, as you can just read the JSON file into a string and pass it to the client constructor.
I created an empty WPF project as a starting point, and a single ViewModel to house the application logic.
Install the Google.Cloud.Storage.V1 nuget package and it should pull in all the dependencies it needs.
Onto the code.
MainWindow.xaml
<StackPanel>
<Button
Margin="50"
Height="50"
Content="BEGIN UPLOAD"
Click="OnButtonClick" />
<ContentControl
Content="{Binding Path=ProgressBar}" />
</StackPanel>
MainWindow.xaml.cs
public partial class MainWindow
{
readonly ViewModel _viewModel;
public MainWindow()
{
_viewModel = new ViewModel(Dispatcher);
DataContext = _viewModel;
InitializeComponent();
}
void OnButtonClick(object sender, RoutedEventArgs args)
{
_viewModel.UploadAsync().ConfigureAwait(false);
}
}
ViewModel.cs
public class ViewModel
{
readonly Dispatcher _dispatcher;
public ViewModel(Dispatcher dispatcher)
{
_dispatcher = dispatcher;
ProgressBar = new ProgressBar {Height=30};
}
public async Task UploadAsync()
{
// Google Cloud Platform project ID.
const string projectId = "project-id-goes-here";
// The name for the new bucket.
const string bucketName = projectId + "-test-bucket";
// Path to the file to upload
const string filePath = #"C:\path\to\image.jpg";
var newObject = new Google.Apis.Storage.v1.Data.Object
{
Bucket = bucketName,
Name = System.IO.Path.GetFileNameWithoutExtension(filePath),
ContentType = "image/jpeg"
};
// read the JSON credential file saved when you created the service account
var credential = Google.Apis.Auth.OAuth2.GoogleCredential.FromJson(System.IO.File.ReadAllText(
#"c:\path\to\service-account-credentials.json"));
// Instantiates a client.
using (var storageClient = Google.Cloud.Storage.V1.StorageClient.Create(credential))
{
try
{
// Creates the new bucket. Only required the first time.
// You can also create buckets through the GCP cloud console web interface
storageClient.CreateBucket(projectId, bucketName);
System.Windows.MessageBox.Show($"Bucket {bucketName} created.");
// Open the image file filestream
using (var fileStream = new System.IO.FileStream(filePath, System.IO.FileMode.Open))
{
ProgressBar.Maximum = fileStream.Length;
// set minimum chunksize just to see progress updating
var uploadObjectOptions = new Google.Cloud.Storage.V1.UploadObjectOptions
{
ChunkSize = Google.Cloud.Storage.V1.UploadObjectOptions.MinimumChunkSize
};
// Hook up the progress callback
var progressReporter = new Progress<Google.Apis.Upload.IUploadProgress>(OnUploadProgress);
await storageClient.UploadObjectAsync(
newObject,
fileStream,
uploadObjectOptions,
progress: progressReporter)
.ConfigureAwait(false);
}
}
catch (Google.GoogleApiException e)
when (e.Error.Code == 409)
{
// When creating the bucket - The bucket already exists. That's fine.
System.Windows.MessageBox.Show(e.Error.Message);
}
catch (Exception e)
{
// other exception
System.Windows.MessageBox.Show(e.Message);
}
}
}
// Called when progress updates
void OnUploadProgress(Google.Apis.Upload.IUploadProgress progress)
{
switch (progress.Status)
{
case Google.Apis.Upload.UploadStatus.Starting:
ProgressBar.Minimum = 0;
ProgressBar.Value = 0;
break;
case Google.Apis.Upload.UploadStatus.Completed:
ProgressBar.Value = ProgressBar.Maximum;
System.Windows.MessageBox.Show("Upload completed");
break;
case Google.Apis.Upload.UploadStatus.Uploading:
UpdateProgressBar(progress.BytesSent);
break;
case Google.Apis.Upload.UploadStatus.Failed:
System.Windows.MessageBox.Show("Upload failed"
+ Environment.NewLine
+ progress.Exception);
break;
}
}
void UpdateProgressBar(long value)
{
_dispatcher.Invoke(() => { ProgressBar.Value = value; });
}
// probably better to expose progress value directly and bind to
// a ProgressBar in the XAML
public ProgressBar ProgressBar { get; }
}
Use of Google.Apis.Storage.v1 for uploading files using SDK to google cloud storage in c#:
Required api-key.json file
Install the package Google.Cloud.Storage.V1; and Google.Apis.Auth.OAuth2;
The code is given below to upload the file to the cloud
private string UploadFile(string localPath, string objectName = null)
{
string projectId = ((Google.Apis.Auth.OAuth2.ServiceAccountCredential)googleCredential.UnderlyingCredential).ProjectId;
try
{
// Creates the new bucket.
var objResult = storageClient.CreateBucket(projectId, bucketName);
if (!string.IsNullOrEmpty(objResult.Id))
{
// Upload file to google cloud server
using (var f = File.OpenRead(localPath))
{
objectName = objectName ?? Path.GetFileName(localPath);
var objFileUploadStatus1 = storageClient.UploadObject(bucketName, objectName, null, f);
}
}
}
catch (Google.GoogleApiException ex)
{
// Error code =409, means bucket already created/exist then upload file in the bucket
if (ex.Error.Code == 409)
{
// Upload file to google cloud server
using (var f = File.OpenRead(localPath))
{
objectName = objectName ?? Path.GetFileName(localPath);
var objFileUploadStatus2 = storageClient.UploadObject(bucketName, objectName, null, f);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
return objectName;
}
To set the credentials
private bool SetStorageCredentials()
{
bool status = true;
try
{
if (File.Exists(credential_path))
{
Environment.SetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS", credential_path);
using (Stream objStream = new FileStream(Environment.GetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS"), FileMode.Open, FileAccess.Read))
googleCredential = GoogleCredential.FromStream(objStream);
// Instantiates a client.
storageClient = StorageClient.Create();
channel = new Grpc.Core.Channel(SpeechClient.DefaultEndpoint.Host, googleCredential.ToChannelCredentials());
}
else
{
DialogResult result = MessageBox.Show("File " + Path.GetFileName(credential_path) + " does not exist. Please provide the correct path.");
if (result == System.Windows.Forms.DialogResult.OK)
{
status = false;
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
status = false;
}
return status;
}
I used SDK in one of my window application. You can use the same code according to your needs/requirements.
You'll be happy to know it still works in 2016...
I was googling all over using fancy key words like "google gcp C# upload image", until I just plain asked the question: "How do I upload an image to google bucket using C#"... and here I am. I removed the .Result in the user credential, and this was the final edit that worked for me.
// ******
static string bucketForImage = ConfigurationManager.AppSettings["testStorageName"];
static string projectName = ConfigurationManager.AppSettings["GCPProjectName"];
string gcpPath = Path.Combine(Server.MapPath("~/Images/Gallery/"), uniqueGcpName + ext);
var clientSecrets = new ClientSecrets();
clientSecrets.ClientId = ConfigurationManager.AppSettings["GCPClientID"];
clientSecrets.ClientSecret = ConfigurationManager.AppSettings["GCPClientSc"];
var scopes = new[] { #"https://www.googleapis.com/auth/devstorage.full_control" };
var cts = new CancellationTokenSource();
var userCredential = await GoogleWebAuthorizationBroker.AuthorizeAsync(clientSecrets, scopes, ConfigurationManager.AppSettings["GCPAccountEmail"], cts.Token);
var service = new Google.Apis.Storage.v1.StorageService();
var bucketToUpload = bucketForImage;
var newObject = new Google.Apis.Storage.v1.Data.Object()
{
Bucket = bucketToUpload,
Name = bkFileName
};
FileStream fileStream = null;
try
{
fileStream = new FileStream(gcpPath, FileMode.Open);
var uploadRequest = new Google.Apis.Storage.v1.ObjectsResource.InsertMediaUpload(service, newObject,
bucketToUpload, fileStream, "image/"+ ext);
uploadRequest.OauthToken = userCredential.Token.AccessToken;
await uploadRequest.UploadAsync();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (fileStream != null)
{
fileStream.Dispose();
}
}
// ******
Here is the link to their official C# example of ".NET Bookshelf App" using Google Cloud storage.
https://cloud.google.com/dotnet/docs/getting-started/using-cloud-storage
Source on github:
https://github.com/GoogleCloudPlatform/getting-started-dotnet/blob/master/aspnet/3-binary-data/Services/ImageUploader.cs
https://github.com/GoogleCloudPlatform/getting-started-dotnet/tree/master/aspnet/3-binary-data
Nuget
https://www.nuget.org/packages/Google.Cloud.Storage.V1/
Here are 2 examples that helped me to upload files to a bucket in Google Cloud Storage with Google.Cloud.Storage.V1 (not Google.Apis.Storage.v1):
Upload files to Google cloud storage using c#
Uploading .csv Files to Google Cloud Storage using C# .Net
I got both working on a C# Console Application just for testing purposes.
#February 2021
string _projectId = "YOUR-PROJECT-ID-GCP"; //ProjectID also present in the json file
GoogleCredential _credential = GoogleCredential.FromFile("credential-cloud-file-123418c9e06c.json");
/// <summary>
/// UploadFile to GCS Bucket
/// </summary>
/// <param name="bucketName"></param>
/// <param name="localPath">my-local-path/my-file-name</param>
/// <param name="objectName">my-file-name</param>
public void UploadFile(string bucketName, string localPath, string objectName)
{
var storage = StorageClient.Create(_credential);
using var fileStream = File.OpenRead(localPath);
storage.UploadObject(bucketName, objectName, null, fileStream);
Console.WriteLine($"Uploaded {objectName}.");
}
You get the credentials JSON file from the google cloud portal where you create a bucket under your project..
Simple, with auth:
private void SaveFileToGoogleStorage(string path, string? fileName, string ext)
{
var filePath = Path.Combine(path, fileName + ext);
var gcCredentialsPath = Path.Combine(Environment.CurrentDirectory, "gc_sa_key.json");
Environment.SetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS", gcCredentialsPath);
var gcsStorage = StorageClient.Create();
using var f = File.OpenRead(filePath);
var objectName = Path.GetFileName(filePath);
gcsStorage.UploadObject(_bucketName, objectName, null, f);
Console.WriteLine($"Uploaded {objectName}.");
}

Windows store app C# Catch Error

I am developing a Windows store app, however I used this method to generate an user id when the app open by first time
private string host = "http://etc.com";
public async void RegisterUsuario() {
string displayName = await UserInformation.GetDisplayNameAsync();
string url = host + "/json/Register.php?code=" + displayName;
try
{
var http = new HttpClient();
var jsonText = await http.GetStringAsync(url);
var jsonValues = JsonArray.Parse(jsonText)[0];
var status = jsonValues.GetObject().GetNamedString("status");
if (status == "error")
{
var dialog = new MessageDialog("No se pudo registrar tu usuario", "¡Oops!");
await dialog.ShowAsync();
}
else
{
ApplicationDataContainer localSettings = ApplicationData.Current.LocalSettings;
localSettings.Values["usuario"] = jsonValues.GetObject().GetNamedNumber("id");
}
}
catch {
alertCatch("No se pudo registrar tu usuario");
}
}
THE JSON RESPONSE:
[{"status":"success","id":32}]
The problem:
In my pc always works fine, but when I submit the app to the windows store I always get this:
http://imgur.com/lOT09l7
the same error that will show the app in the CATCH.
Can you help me, maybe something in the appxmanifest?
In capabilities I selected private and public networks

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