ArcGISRuntime.UWP.Samples.AuthorMap.AuthorMap.SaveNewMapAsync C# (CSharp) Method

        private async Task SaveNewMapAsync(Map myMap, string title, string description, string[] tags)
        {
            // Challenge the user for portal credentials (OAuth credential request for arcgis.com)
            CredentialRequestInfo loginInfo = new CredentialRequestInfo();

            // Use the OAuth implicit grant flow
            loginInfo.GenerateTokenOptions = new GenerateTokenOptions
            {
                TokenAuthenticationType = TokenAuthenticationType.OAuthImplicit
            };

            // Indicate the url (portal) to authenticate with (ArcGIS Online)
            loginInfo.ServiceUri = new Uri("http://www.arcgis.com/sharing/rest");

            try
            {
                // Get a reference to the (singleton) AuthenticationManager for the app
                AuthenticationManager thisAuthenticationManager = AuthenticationManager.Current;

                // Call GetCredentialAsync on the AuthenticationManager to invoke the challenge handler
                await thisAuthenticationManager.GetCredentialAsync(loginInfo, false);
            }
            catch (OperationCanceledException)
            {
                // user canceled the login
                throw new Exception("Portal log in was canceled.");
            }

            // Get the ArcGIS Online portal (will use credential from login above)
            ArcGISPortal agsOnline = await ArcGISPortal.CreateAsync();

            // Save the current state of the map as a portal item in the user's default folder
            await myMap.SaveAsAsync(agsOnline, null, title, description, tags, null);
        }