OAuth2 Authentication to google Drive with C#

GoogleDriveOauth2Csharp

//Scopes for use with the Google Drive API
string[] scopes = new string[] { DriveService.Scope.Drive,
                                 DriveService.Scope.DriveFile};
var clientId = "[Client ID]";      // From https://console.developers.google.com
var clientSecret = "xxx";          // From https://console.developers.google.com
// here is where we Request the user to give us access, or use the Refresh Token that was previously stored in %AppData%
var credential = GoogleWebAuthorizationBroker.AuthorizeAsync(new ClientSecrets { ClientId = clientId,
                                                                                 ClientSecret = clientSecret},
                                                            scopes,
                                                            Environment.UserName,
                                                            CancellationToken.None,
                                                            new FileDataStore("Daimto.GoogleDrive.Auth.Store")).Result;

Hi,

I am working on C# MVC web application . In this application I am integrating google drive and using Google.Apis (version- 1.19.0.0). For this implementation I have taken the reference from your sample code and have implemented successfully in my application. During testing I have found that it is working fine when I run directly this from visual studio but when I deployed this on IIS (even local IIS) it is not working. After investigation I have found that it is giving problem in authentication and not trigger the authenticate screen with Gmail account. Mainly giving me on this below line :

UserCredential credential = GoogleWebAuthorizationBroker.AuthorizeAsync(new ClientSecrets {ClientId = clientId, ClientSecret = clientSecret} , scopes , userName , CancellationToken.None
, new FileDataStore(folder,true)).Result;

Nothing has happened after this line (no error) . Kindly help me on this . How I can solve this problem? Is there any setting in IIS that I need to set for this ?

Some trouble shooting I already done like :

1. Given permission to folder (that store the outh response ). Like asp.net users .
2. Tried with both folder default roaming folder and custom folder (for store the outh response)

Let me know if you want more information from my side.

Best regards,
Sunil Sharma