Why getting error "'CalendarsRequestBuilder' does not contain a definition for 'Request' " graphClient.Me.Calendars.Request().GetAsync();

Question

I am trying to write code to access Microsoft Calendar using Graph API

    var calendars = await graphClient.Me.Calendars.Request().GetAsync();
    List<string> calendarNames = new List<string>();
       foreach (var calendar in calendars)
       {
         calendarNames.Add(calendar.Name);
       }

I am facing strange problem.

var calendars = await graphClient.Me.Calendars.Request().GetAsync();

But compiler is throwing error saying "'CalendarsRequestBuilder' does not contain a definition for 'Request' "

I have nuget packages included

Microsoft.Graph Microsoft.Graph.Core Microsoft.Idendity.Client

I tried downgrading Graph library, but problem still remains.

Answer 1

The Request() method is used in Graph SDK v4, the latest SDK v5 removed this method, so you can call directly GetAsync()

await graphClient.Me.Calendars.GetAsync();

To get access token (based on your comment)

• create a new class that implements IAccessTokenProvider
• in GetAuthorizationTokenAsync create IPublicClientApplication

public class TokenProvider : IAccessTokenProvider
{
    public AllowedHostsValidator AllowedHostsValidator => throw new NotImplementedException();

    public async Task<string> GetAuthorizationTokenAsync(Uri uri, Dictionary<string, object> additionalAuthenticationContext = null, CancellationToken cancellationToken = default)
    {
        var scopes = new[] { "Calendar.ReadWrite" };
        AuthenticationResult authResult;
        var publicClientApp = PublicClientApplicationBuilder.Create("clientId").Build();
        try
        {

            var accounts = await publicClientApp.GetAccountsAsync();
            authResult = await publicClientApp.AcquireTokenSilent(scopes, accounts.FirstOrDefault()).ExecuteAsync();
            return authResult.AccessToken;
        }
        catch (MsalUiRequiredException ex)
        {
            authResult = await publicClientApp.AcquireTokenInteractive(scopes).ExecuteAsync();
            return authResult.AccessToken;
        }
    }
}

Now, create a new authentication provider

var authenticationProvider = new BaseBearerTokenAuthenticationProvider(new TokenProvider());
var graphClient = new GraphServiceClient(authenticationProvider);

Upgrade guide from v4 to v5