Graph API - Create Azure AD B2C Consumer User with external email through email invitation

Question

Trying to create a consumer user with their personal email id in Azure AD B2C, using graph API., along with this I also need to trigger the email with a one-time passcode, so the user can self-sign up. But not able to find an option within the graph API, though it only allows me to create a consumer user with the password.

Kindly let us know what the best way to achieve this by code 

Answer 1

Hi Ramu Balachandran,

Here I suggest a code that I use in my developments:

using Microsoft.Graph;
using Microsoft.Identity.Client;
using System;
using System.Threading.Tasks;

public class B2CUserSample
{
    private static string clientId = "Client_ID";
    private static string tenantId = "Tenant_ID";
    private static string clientSecret = "Client_Secret";

    public static async Task Main(string[] args)
    {
        IConfidentialClientApplication confidentialClientApplication = ConfidentialClientApplicationBuilder
            .Create(clientId)
            .WithClientSecret(clientSecret)
            .WithAuthority($"https://login.microsoftonline.com/{tenantId}")
            .Build();

        string[] scopes = new string[] { "https://graph.microsoft.com/.default" };
        AuthenticationResult authenticationResult = await confidentialClientApplication.AcquireTokenForClient(scopes).ExecuteAsync();

        GraphServiceClient graphClient = new GraphServiceClient(new DelegateAuthenticationProvider((requestMessage) =>
        {
            requestMessage.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", authenticationResult.AccessToken);
            return Task.CompletedTask;
        }));

        string userEmailAddress = "******@youremail.com";
        string oneTimePasscodeEmailTemplateId = "Your_Email_Template_Id";

        Invitation invitation = new Invitation
        {
            InvitedUserEmailAddress = userEmailAddress,
            InvitedUserType = "Consumer",
            InviteRedirectUrl = "https://yourredirecturl.com",
            InvitedUserMessageInfo = new InvitedUserMessageInfo
            {
                CustomizedMessageBody = $"Your Body Message: {{OTP}}",
                AdditionalData = new System.Collections.Generic.Dictionary<string, object>
                {
                    { "otpEmailTemplateId", oneTimePasscodeEmailTemplateId }
                }
            }
        };

        try
        {
            await graphClient.Invitations.Request().AddAsync(invitation);
            Console.WriteLine("Invitation sent successfully.");
        }
        catch (Exception ex)
        {
            Console.WriteLine("Error sending invitation: " + ex.Message);
        }
    }
}

Regards,