CODEWITHSUNDEEP
google-apigmailgmail-apigoogle-api-clientgoogle-api-dotnet-client
Ishan Malik
Ishan Malik

Reputation: 139

Could not load file or assembly 'Google.Apis, Version=1.27.0.0, Culture=neutral, PublicKeyToken=4b01fa6e34db77ab' or one of its dependencies.

I have a requirement to implement gmail into my web application. While implementing Gmail in my web application, I am getting the mentioned exception.

I have tried the steps mentioned in Gmail API Quickstart... https://developers.google.com/gmail/api/quickstart/dotnet

As I am trying to create an object of GmailService, I am getting an exception. My code is as follows...

    static UserCredential GetGmailUserCredential()
    {
        UserCredential credential;
        string[] scopes = { GmailService.Scope.GmailReadonly };
        string credPath = System.IO.Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal), ".credentials/gmail-dotnet-quickstart.json");
        try
        {
            using (var stream = new System.IO.FileStream(@"D:\Projects_Temp\Learning\Webform\GSuite\client_secret.json", System.IO.FileMode.Open, System.IO.FileAccess.Read))
            {
                credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
                    GoogleClientSecrets.Load(stream).Secrets,
                    scopes,
                    Environment.UserName,
                    CancellationToken.None,
                    new FileDataStore(credPath, true)).Result;
            }
        }
        catch (Exception ex)
        {
            credential = GoogleWebAuthorizationBroker.AuthorizeAsync(new ClientSecrets { ClientId = clientID, ClientSecret = clientSecret }
                                                                                         , scopes
                                                                                         , Environment.UserName
                                                                                         , CancellationToken.None
                                                                                         , new FileDataStore(credPath, true)).Result;
        }

        return credential;
    }

    public static GmailService GetGmailClient()
    {
        var credential = GetGmailUserCredential();
        // Create Drive API service.
        var service = new GmailService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential
        });

        return service;
    }

    public static List<Label> GetLabels(GmailService service)
    {
        // Define parameters of request.
        UsersResource.LabelsResource.ListRequest request = service.Users.Labels.List("me");
        // List labels.
        return request.Execute().Labels.ToList();
    }

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            using (GmailService service = GSuiteHelper.GetGmailClient())
            {
                var lst = GSuiteHelper.GetLabels(service);
            }
        }
    }

Upvotes: 1

Views: 3056

Answers (1)

Bikey
Bikey

Reputation: 945

Check the Web.config of your web application. I saw a duplicate entry in mine. One had all caps public token. So I am guessing it is case sensitive and didn't over-write when I upgraded the version. So it kept using the old version number, which I had obviously uninstalled. Hope this helps. These was the duplicate that existed.

<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
  <dependentAssembly>
    <assemblyIdentity name="Google.Apis.Auth" publicKeyToken="4B01FA6E34DB77AB" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-1.27.1.0" newVersion="1.27.1.0" />
  </dependentAssembly>

Upvotes: 1

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