How to Connect to Azure B2C using C#

 Below is the code related to how to connect to Azure AD B2C using B2CGraphClient. 

    1. Get Access Token using following approach : 

        

 this.clientId = clientId;

            this.clientSecret = clientSecret;

            this.tenant = tenant;

            // The AuthenticationContext is ADAL's primary class, in which you indicate the direcotry to use.

            this.authContext = new AuthenticationContext("https://login.microsoftonline.com/" + tenant);

            // The ClientCredential is where you pass in your client_id and client_secret, which are 

            // provided to Azure AD in order to receive an access_token using the app's identity.

            this.credential = new ClientCredential(clientId, clientSecret);

2.  Send Graph Request using below code : 

 // First, use ADAL to acquire a token using the app's identity (the credential)

            // The first parameter is the resource we want an access_token for; in this case, the Graph API.

            Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationResult result = await authContext.AcquireTokenAsync("https://graph.windows.net", credential);

            //AuthenticationResult result = authContext.AcquireToken("https://graph.windows.net", credential);

            // For B2C user managment, be sure to use the 1.6 Graph API version.

            HttpClient http = new HttpClient();

            string url = "https://graph.windows.net/" + tenant + api + "?" + Globals.aadGraphVersion;

            if (!string.IsNullOrEmpty(query))

            {

                url += "&" + query;

            }

            Console.ForegroundColor = ConsoleColor.Cyan;

            // Append the access token for the Graph API to the Authorization header of the request, using the Bearer scheme.

            HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, url);

            request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", result.AccessToken);

            HttpResponseMessage response = await http.SendAsync(request);

            if (!response.IsSuccessStatusCode)

            {

                string error = await response.Content.ReadAsStringAsync();

                object formatted = JsonConvert.DeserializeObject(error);

                throw new WebException("Error Calling the Graph API: \n" + JsonConvert.SerializeObject(formatted, Formatting.Indented));

            }

            Console.ForegroundColor = ConsoleColor.Green;

            await response.Content.ReadAsStringAsync();